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BAR09 - The diversity of methanol maser morphologies from VLBI observations

Interferometry data

Short title: Bartkiewicz et al. (2009)
Authors: Bartkiewicz, A. Szymczak, M. van Langevelde, H. J. Richards, A. M. S. Pihlström, Y. M.
Journal: Astronomy and Astrophysics, Volume 502, Issue 1, 2009, pp.155-173
Bibcode:

Target type: Known_Class_II,YSO
Transitions: CH3OH_6(II)

Abstract
Context: The 6.7 GHz methanol maser marks an early stage of high-mass star formation, but the origin of this maser is currently a matter of debate. In particular it is unclear whether the maser emission arises in discs, outflows or behind shocks running into rotating molecular clouds. Aims: We investigated which structures the methanol masers trace in the environment of high-mass protostar candidates by observing a homogenous sample of methanol masers selected from Torun surveys. We also probed their origins by looking for associated H II regions and IR emission. Methods: We selected 30 methanol sources with improved position accuracies achieved using MERLIN and another 3 from the literature. We imaged 31 of these using the European VLBI Network's expanded array of telescopes with 5-cm (6-GHz) receivers. We used the VLA to search for 8.4 GHz radio continuum counterparts and inspected Spitzer GLIMPSE data at 3.6-8 mum from the archive. Results: High angular resolution images allowed us to analyze the morphology and kinematics of the methanol masers in great detail and verify their association with radio continuum and mid-infrared emission. A new class of ``ring-like'' methanol masers in star-forming regions appeared to be suprisingly common, 29% of the sample. Conclusions: The new morphology strongly suggests that methanol masers originate in the disc or torus around a proto- or a young massive star. However, the maser kinematics indicate the strong influence of outflow or infall. This suggests that they form at the interface between the disc/torus and a flow. This is also strongly supported by Spitzer results because the majority of the masers coincide with 4.5 mum emission to within less than 1´´. Only four masers are associated with the central parts of UC H II regions. This implies that 6.7 GHz methanol maser emission occurs before H II region observable at cm wavelengths is formed. Tables 1-3, 6 and Figs. 3, 6 are only available in electronic form at http://www.aanda.org eprintid: arXiv:0905.3469

Abstract

Context: The 6.7 GHz methanol maser marks an early stage of high-mass star formation, but the origin of this maser is currently a matter of debate. In particular it is unclear whether the maser emission arises in discs, outflows or behind shocks running into rotating molecular clouds.
Aims: We investigated which structures the methanol masers trace in the environment of high-mass protostar candidates by observing a homogenous sample of methanol masers selected from Torun surveys. We also probed their origins by looking for associated H II regions and IR emission.
Methods: We selected 30 methanol sources with improved position accuracies achieved using MERLIN and another 3 from the literature. We imaged 31 of these using the European VLBI Network's expanded array of telescopes with 5-cm (6-GHz) receivers. We used the VLA to search for 8.4 GHz radio continuum counterparts and inspected Spitzer GLIMPSE data at 3.6-8 mum from the archive.
Results: High angular resolution images allowed us to analyze the morphology and kinematics of the methanol masers in great detail and verify their association with radio continuum and mid-infrared emission. A new class of ``ring-like'' methanol masers in star-forming regions appeared to be suprisingly common, 29% of the sample.
Conclusions: The new morphology strongly suggests that methanol masers originate in the disc or torus around a proto- or a young massive star. However, the maser kinematics indicate the strong influence of outflow or infall. This suggests that they form at the interface between the disc/torus and a flow. This is also strongly supported by Spitzer results because the majority of the masers coincide with 4.5 mum emission to within less than 1´´. Only four masers are associated with the central parts of UC H II regions. This implies that 6.7 GHz methanol maser emission occurs before H II region observable at cm wavelengths is formed. Tables 1-3, 6 and Figs. 3, 6 are only available in electronic form at eprintid:

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	#	Source name	Image	Descr.	Line	V_peak	FWHM	F_peak	Telescope	RMS	Beam	PA	Detection	Date
	(J2000)	(J2000)	(arcsec)	(arcsec)	(deg.)	(deg.)						CH₃OH (class II)	(km/s)	(km/s)	(Jy/beam)		(mJy/beam)	(arcsec)	(deg.)	Yes/No
1	+18 31 6.33794	-10 21 37.4108			21.406761	-0.254187	G21.407-0.254		G21.407-0.254	Image		6.6 GHz (II)	89	3	2.76	MERLIN	10.000	5 x 15	-87	+H₂O +CH₃OH II	2006 Feb 22
	+18 31 6.33792	-10 21 37.4112	0 mas	0 mas	21.406761	-0.254187		1	G21.407-0.254 A				89.04		2762
	+18 31 6.33792	-10 21 37.4112	-0.02 mas	9.73 mas	21.406761	-0.254187		2	G21.407-0.254 B				89.303		1426
	+18 31 6.33792	-10 21 37.4112	-8.99 mas	-26.33 mas	21.406761	-0.254187		3	G21.407-0.254 C				90.094		307
	+18 31 6.33791	-10 21 37.4112	-136.3 mas	5.04 mas	21.406761	-0.254187		4	G21.407-0.254 D				91.148		891
	+18 31 6.33792	-10 21 37.4112	-13.16 mas	-23.68 mas	21.406761	-0.254187		5	G21.407-0.254 E				91.412		117
	+18 31 6.33792	-10 21 37.4112	-27.35 mas	1.53 mas	21.406761	-0.254187		6	G21.407-0.254 F				91.587		422
2	+18 32 29.407	-09 29 29.684			22.33478	-0.154858	G22.335-0.155		G22.335-0.155	Image		6.6 GHz (II)	35.6	3.1	1.71	MERLIN	10.000	5 x 15	16	+H₂O -CH₃OH I +CH₃OH II +OH	2006 Feb 22
	+18 32 29.407	-09 29 29.6844	0 mas	0 mas	22.334779	-0.154858		1	G22.335-0.155 A				35.626		1714
	+18 32 29.407	-09 29 29.6844	-10.98 mas	-47.41 mas	22.334779	-0.154858		2	G22.335-0.155 B				38.174		125
3	+18 31 44.1205	-09 22 12.3129			22.356505	0.06636	G22.355+0.066		G22.357+0.066	Image	Descr	6.6 GHz (II)	79.7	9.2	10.54	MERLIN	4.000	6 x 12	-5	+H₂O +CH₃OH I +CH₃OH II +OH	2007 Jun 13
	+18 31 44.1206	-09 22 12.3132	0 mas	0 mas	22.356505	0.066360		1	G22.357+0.066 A				79.708		10544
	+18 31 44.1206	-09 22 12.3132	1.01 mas	-6.01 mas	22.356505	0.066360		2	G22.357+0.066 B				80.235		10067
	+18 31 44.1206	-09 22 12.3132	2.9 mas	-18.35 mas	22.356505	0.066360		3	G22.357+0.066 C				81.114		1422
	+18 31 44.1207	-09 22 12.3132	155.09 mas	-46.32 mas	22.356505	0.066360		4	G22.357+0.066 D				81.465		492
	+18 31 44.1206	-09 22 12.3132	139.28 mas	-18.68 mas	22.356505	0.066360		5	G22.357+0.066 E				83.574		309
	+18 31 44.1206	-09 22 12.3131	141.53 mas	66.57 mas	22.356505	0.066360		6	G22.357+0.066 F				84.101		156
	+18 31 44.1206	-09 22 12.3131	132.03 mas	75.77 mas	22.356505	0.066360		7	G22.357+0.066 G				84.804		176
	+18 31 44.1206	-09 22 12.313	55.76 mas	208.54 mas	22.356505	0.066360		8	G22.357+0.066 H				88.143		602
	+18 31 44.1206	-09 22 12.3129	68.18 mas	277.2 mas	22.356505	0.066360		9	G22.357+0.066 I				88.494		250
	+18 31 44.1206	-09 22 12.313	56.65 mas	207.54 mas	22.356505	0.066360		10	G22.357+0.066 J				88.67		476
4	+18 34 55.2121	-08 49 14.8926			23.206566	-0.377743	G23.207-0.378		G23.207-0.377	Image		6.6 GHz (II)	77.1	13.2	9.3	MERLIN	4.000	6 x 16	-69	+H₂O +CH₃OH I +CH₃OH II +OH	2004 Nov 11
	+18 34 55.2122	-08 49 14.8945	-101.4 mas	-64.3 mas	23.206566	-0.377743		1	G23.207-0.377 A				72.553		141
	+18 34 55.2122	-08 49 14.8944	-32.58 mas	-17.53 mas	23.206566	-0.377744		2	G23.207-0.377 B				73.959		194
	+18 34 55.2122	-08 49 14.8944	0.58 mas	9.94 mas	23.206566	-0.377744		3	G23.207-0.377 C				75.19		226
	+18 34 55.2122	-08 49 14.8944	-25.7 mas	-1.98 mas	23.206566	-0.377744		4	G23.207-0.377 D				75.014		421
	+18 34 55.2122	-08 49 14.8944	-269.64 mas	26.19 mas	23.206566	-0.377743		5	G23.207-0.377 E				75.453		893
	+18 34 55.2122	-08 49 14.8944	57.36 mas	41.82 mas	23.206566	-0.377744		6	G23.207-0.377 F				75.629		647
	+18 34 55.2122	-08 49 14.8944	-30.83 mas	-11.61 mas	23.206566	-0.377744		7	G23.207-0.377 G				76.069		229
	+18 34 55.2122	-08 49 14.8944	-11.66 mas	3.2 mas	23.206566	-0.377744		8	G23.207-0.377 H				76.596		4748
	+18 34 55.2122	-08 49 14.8944	0 mas	0 mas	23.206566	-0.377744		9	G23.207-0.377 I				77.123		9292
	+18 34 55.2122	-08 49 14.8944	29.48 mas	-4.29 mas	23.206566	-0.377744		10	G23.207-0.377 J				77.475		3387
	+18 34 55.2122	-08 49 14.8944	11.08 mas	4.99 mas	23.206566	-0.377744		11	G23.207-0.377 K				77.739		3096
	+18 34 55.2122	-08 49 14.8944	53.07 mas	-33.43 mas	23.206566	-0.377744		12	G23.207-0.377 L				78.793		541
	+18 34 55.2122	-08 49 14.8944	-217.12 mas	30.91 mas	23.206566	-0.377743		13	G23.207-0.377 M				78.881		286
	+18 34 55.2122	-08 49 14.8944	47.44 mas	-30.92 mas	23.206566	-0.377744		14	G23.207-0.377 N				78.969		577
	+18 34 55.2122	-08 49 14.8944	50.46 mas	-32.35 mas	23.206566	-0.377744		15	G23.207-0.377 O				79.233		1319
	+18 34 55.2122	-08 49 14.8946	-135.9 mas	-191.48 mas	23.206566	-0.377744		16	G23.207-0.377 P				79.496		277
	+18 34 55.2122	-08 49 14.8945	-113.84 mas	-117.08 mas	23.206566	-0.377743		17	G23.207-0.377 Q				79.672		213
	+18 34 55.2122	-08 49 14.8945	-57.85 mas	-71.48 mas	23.206566	-0.377744		18	G23.207-0.377 R				79.936		315
	+18 34 55.2122	-08 49 14.8945	-163.91 mas	-147.14 mas	23.206566	-0.377743		19	G23.207-0.377 S				80.727		7092
	+18 34 55.2122	-08 49 14.8945	-136.26 mas	-139.26 mas	23.206566	-0.377743		20	G23.207-0.377 T				81.869		8967
	+18 34 55.2122	-08 49 14.8945	-141.08 mas	-140.77 mas	23.206566	-0.377743		21	G23.207-0.377 U				81.869		5874
	+18 34 55.2122	-08 49 14.8945	-157.21 mas	-145.56 mas	23.206566	-0.377743		22	G23.207-0.377 V				82.045		1104
	+18 34 55.2122	-08 49 14.8945	-151.96 mas	-147.62 mas	23.206566	-0.377743		23	G23.207-0.377 W				82.836		1190
	+18 34 55.2122	-08 49 14.8945	-47.4 mas	-112.08 mas	23.206566	-0.377744		24	G23.207-0.377 X				84.858		791
5	+18 33 14.3248	-08 23 57.4723			23.389056	0.185382	G23.389+0.185		G23.389+0.185	Image		6.6 GHz (II)	75.4	6	21.55	MERLIN	4.000	6 x 16	59	+H₂O +CH₃OH I +CH₃OH II +OH	2004 Nov 11
	+18 33 14.3249	-08 23 57.4728	-78.23 mas	32.64 mas	23.389056	0.185381		1	G23.389+0.185 A				72.641		6398
	+18 33 14.3249	-08 23 57.4728	52.42 mas	32.43 mas	23.389056	0.185381		2	G23.389+0.185 B				73.784		9326
	+18 33 14.3249	-08 23 57.4728	46.88 mas	38.89 mas	23.389056	0.185381		3	G23.389+0.185 C				74.399		2978
	+18 33 14.3249	-08 23 57.4728	-43.28 mas	31.94 mas	23.389056	0.185381		4	G23.389+0.185 D				74.575		4700
	+18 33 14.3249	-08 23 57.4727	43.45 mas	63.98 mas	23.389056	0.185381		5	G23.389+0.185 E				74.75		311
	+18 33 14.3249	-08 23 57.4728	41.07 mas	14.01 mas	23.389056	0.185381		6	G23.389+0.185 F				74.75		267
	+18 33 14.3249	-08 23 57.4727	31.53 mas	70.9 mas	23.389056	0.185381		7	G23.389+0.185 G				74.838		19723
	+18 33 14.3249	-08 23 57.4728	41.87 mas	49.96 mas	23.389056	0.185381		8	G23.389+0.185 H				74.926		1272
	+18 33 14.3249	-08 23 57.4728	0 mas	0 mas	23.389056	0.185381		9	G23.389+0.185 I				75.453		21554
	+18 33 14.3249	-08 23 57.4726	-57.21 mas	153.9 mas	23.389056	0.185381		10	G23.389+0.185 J				75.541		397
	+18 33 14.3249	-08 23 57.4727	-64.5 mas	143.65 mas	23.389056	0.185381		11	G23.389+0.185 K				75.805		3708
	+18 33 14.3249	-08 23 57.4727	78.59 mas	144.94 mas	23.389056	0.185381		12	G23.389+0.185 L				76.069		6571
	+18 33 14.3249	-08 23 57.4726	-93.21 mas	154.84 mas	23.389056	0.185381		13	G23.389+0.185 M				76.332		4516
	+18 33 14.3249	-08 23 57.4727	-70.03 mas	145.24 mas	23.389056	0.185381		14	G23.389+0.185 N				76.596		1072
	+18 33 14.3249	-08 23 57.4727	20.98 mas	75.45 mas	23.389056	0.185381		15	G23.389+0.185 O				76.948		721
	+18 33 14.3249	-08 23 57.4727	-69.19 mas	147.11 mas	23.389056	0.185381		16	G23.389+0.185 P				77.035		4860
	+18 33 14.3249	-08 23 57.4726	-73.8 mas	150.86 mas	23.389056	0.185381		17	G23.389+0.185 Q				77.475		234
	+18 33 14.3249	-08 23 57.4726	-31.88 mas	157.97 mas	23.389056	0.185381		18	G23.389+0.185 R				77.563		485
6	+18 34 51.5648	-08 18 21.3045			23.656704	-0.127317	G23.657-0.127		G23.657-0.127	Image	Descr	6.6 GHz (II)	82.6	10.8	3.62	MERLIN	4.000	6 x 16	-82	-H₂O -CH₃OH I +CH₃OH II +OH -SiO	2004 Nov 11
	+18 34 51.5647	-08 18 21.3046	-5.04 mas	229.87 mas	23.656704	-0.127317		1	G23.657-0.127 A				77.563		816
	+18 34 51.5647	-08 18 21.3046	-22.26 mas	232.7 mas	23.656704	-0.127317		2	G23.657-0.127 B				77.563		333
	+18 34 51.5647	-08 18 21.3046	-71.13 mas	228.16 mas	23.656704	-0.127317		3	G23.657-0.127 C				78.266		1059
	+18 34 51.5647	-08 18 21.3046	54.59 mas	171.62 mas	23.656704	-0.127317		4	G23.657-0.127 D				78.881		336
	+18 34 51.5647	-08 18 21.3047	105.34 mas	117.07 mas	23.656704	-0.127317		5	G23.657-0.127 E				79.584		162
	+18 34 51.5647	-08 18 21.3046	-124.74 mas	212.5 mas	23.656704	-0.127317		6	G23.657-0.127 F				80.024		1595
	+18 34 51.5647	-08 18 21.3046	-39.36 mas	213.55 mas	23.656704	-0.127317		7	G23.657-0.127 G				80.112		977
	+18 34 51.5647	-08 18 21.3048	21.77 mas	-13.3 mas	23.656704	-0.127317		8	G23.657-0.127 H				80.639		850
	+18 34 51.5647	-08 18 21.3049	14.31 mas	-66.49 mas	23.656704	-0.127317		9	G23.657-0.127 I				80.727		375
	+18 34 51.5647	-08 18 21.3048	-156.98 mas	-5.29 mas	23.656704	-0.127317		10	G23.657-0.127 J				80.99		124
	+18 34 51.5647	-08 18 21.3048	3 mas	-47.47 mas	23.656704	-0.127317		11	G23.657-0.127 K				81.166		362
	+18 34 51.5647	-08 18 21.3049	26.35 mas	-70.28 mas	23.656704	-0.127317		12	G23.657-0.127 L				81.166		68
	+18 34 51.5647	-08 18 21.3048	7.24 mas	-3.7 mas	23.656704	-0.127317		13	G23.657-0.127 M				81.518		588
	+18 34 51.5647	-08 18 21.3046	46.31 mas	156.53 mas	23.656704	-0.127317		14	G23.657-0.127 N				81.781		126
	+18 34 51.5647	-08 18 21.3048	10.27 mas	10.88 mas	23.656704	-0.127317		15	G23.657-0.127 O				81.869		806
	+18 34 51.5647	-08 18 21.3048	13.25 mas	-13.1 mas	23.656704	-0.127317		16	G23.657-0.127 P				81.869		90
	+18 34 51.5647	-08 18 21.3048	-1.55 mas	-43.72 mas	23.656704	-0.127317		17	G23.657-0.127 Q				82.133		132
	+18 34 51.5647	-08 18 21.3046	44.51 mas	156.81 mas	23.656704	-0.127317		18	G23.657-0.127 R				82.309		393
	+18 34 51.5647	-08 18 21.3048	0 mas	0 mas	23.656704	-0.127317		19	G23.657-0.127 S				82.573		3623
	+18 34 51.5647	-08 18 21.3046	41.53 mas	162.29 mas	23.656704	-0.127317		20	G23.657-0.127 T				82.836		168
	+18 34 51.5647	-08 18 21.3048	-210.95 mas	11.34 mas	23.656704	-0.127317		21	G23.657-0.127 U				83.1		182
	+18 34 51.5647	-08 18 21.3048	-47.86 mas	-35.5 mas	23.656704	-0.127317		22	G23.657-0.127 V				83.276		1018
	+18 34 51.5647	-08 18 21.3047	69.21 mas	83.75 mas	23.656704	-0.127317		23	G23.657-0.127 W				83.539		80
	+18 34 51.5647	-08 18 21.3048	0.77 mas	18.78 mas	23.656704	-0.127317		24	G23.657-0.127 X				83.979		143
	+18 34 51.5647	-08 18 21.3048	-52.81 mas	-32.6 mas	23.656704	-0.127317		25	G23.657-0.127 Y				83.979		557
	+18 34 51.5647	-08 18 21.3048	-133.76 mas	-4.14 mas	23.656704	-0.127317		26	G23.657-0.127 Z				84.243		358
	+18 34 51.5647	-08 18 21.3047	45.69 mas	140.02 mas	23.656704	-0.127317		27	G23.657-0.127 A1				84.858		548
	+18 34 51.5647	-08 18 21.3048	-17.8 mas	-15.66 mas	23.656704	-0.127317		28	G23.657-0.127 B1				86.264		797
	+18 34 51.5647	-08 18 21.3048	-19.72 mas	-18.7 mas	23.656704	-0.127317		29	G23.657-0.127 C1				86.791		746
	+18 34 51.5647	-08 18 21.3048	-16.74 mas	-26.97 mas	23.656704	-0.127317		30	G23.657-0.127 D1				87.231		96
	+18 34 51.5647	-08 18 21.3048	-20.35 mas	-29.53 mas	23.656704	-0.127317		31	G23.657-0.127 E1				87.67		280
7	+18 35 12.366	-08 17 39.3577			23.706533	-0.198086	G23.706-0.198		G23.707-0.198	Image	Descr	6.6 GHz (II)	79.2	23.3	6.06	MERLIN	4.000	6 x 16	-83	+H₂O -CH₃OH I +CH₃OH II +OH	2004 Nov 11
	+18 35 12.366	-08 17 39.3576	20.43 mas	18.15 mas	23.706533	-0.198086		1	G23.707-0.198 A				58.578		377
	+18 35 12.366	-08 17 39.3576	-101.29 mas	0.55 mas	23.706533	-0.198086		2	G23.707-0.198 B				71.41		200
	+18 35 12.366	-08 17 39.3576	-105.41 mas	-5.63 mas	23.706533	-0.198086		3	G23.707-0.198 C				71.762		128
	+18 35 12.366	-08 17 39.3575	-10.2 mas	57.17 mas	23.706533	-0.198086		4	G23.707-0.198 D				72.993		667
	+18 35 12.366	-08 17 39.3576	-1.69 mas	33.73 mas	23.706533	-0.198086		5	G23.707-0.198 E				73.344		92
	+18 35 12.366	-08 17 39.3576	0.35 mas	27.48 mas	23.706533	-0.198086		6	G23.707-0.198 F				73.608		100
	+18 35 12.366	-08 17 39.3576	-3.25 mas	38.2 mas	23.706533	-0.198086		7	G23.707-0.198 G				74.223		672
	+18 35 12.366	-08 17 39.3576	0.39 mas	23.69 mas	23.706533	-0.198086		8	G23.707-0.198 H				74.575		1845
	+18 35 12.366	-08 17 39.3576	-0.01 mas	29.08 mas	23.706533	-0.198086		9	G23.707-0.198 I				75.102		404
	+18 35 12.366	-08 17 39.3576	16.63 mas	-9.96 mas	23.706533	-0.198086		10	G23.707-0.198 J				75.19		306
	+18 35 12.366	-08 17 39.3576	0.36 mas	26.82 mas	23.706533	-0.198086		11	G23.707-0.198 K				75.629		249
	+18 35 12.366	-08 17 39.3576	0.97 mas	19.84 mas	23.706533	-0.198086		12	G23.707-0.198 L				76.157		3319
	+18 35 12.366	-08 17 39.3576	0.96 mas	17.66 mas	23.706533	-0.198086		13	G23.707-0.198 M				76.596		2054
	+18 35 12.366	-08 17 39.3576	0.88 mas	16.24 mas	23.706533	-0.198086		14	G23.707-0.198 N				77.299		3473
	+18 35 12.366	-08 17 39.3576	-14.69 mas	-14.4 mas	23.706533	-0.198086		15	G23.707-0.198 O				78.266		219
	+18 35 12.366	-08 17 39.3576	-13.79 mas	-14.42 mas	23.706533	-0.198086		16	G23.707-0.198 P				78.53		358
	+18 35 12.366	-08 17 39.3576	-0.43 mas	3.75 mas	23.706533	-0.198086		17	G23.707-0.198 Q				77.651		2234
	+18 35 12.366	-08 17 39.3576	-0.6 mas	1.03 mas	23.706533	-0.198086		18	G23.707-0.198 R				78.09		2144
	+18 35 12.366	-08 17 39.3576	0 mas	0 mas	23.706533	-0.198086		19	G23.707-0.198 S				79.145		6059
	+18 35 12.366	-08 17 39.3576	-17.32 mas	-13.91 mas	23.706533	-0.198086		20	G23.707-0.198 T				79.496		117
	+18 35 12.366	-08 17 39.3576	-14.32 mas	-14.38 mas	23.706533	-0.198086		21	G23.707-0.198 U				80.112		202
	+18 35 12.366	-08 17 39.3576	-4.24 mas	-8.03 mas	23.706533	-0.198086		22	G23.707-0.198 V				80.903		142
	+18 35 12.366	-08 17 39.3576	-3.92 mas	-8.63 mas	23.706533	-0.198086		23	G23.707-0.198 W				81.078		159
8	+18 35 22.2147	-08 01 22.4698			23.966137	-0.109253	G23.966-0.110		G23.966-0.109	Image		6.6 GHz (II)	70.9	4.2	5.47	MERLIN	10.000	5 x 15	-45	+H₂O +CH₃OH I +CH₃OH II +OH	2006 Feb 22
	+18 35 22.2146	-08 01 22.4688	21.95 mas	-23.01 mas	23.966137	-0.109252		1	G23.966-0.109 A				67.428		387
	+18 35 22.2146	-08 01 22.4688	23.3 mas	-22.96 mas	23.966137	-0.109252		2	G23.966-0.109 B				68.219		431
	+18 35 22.2146	-08 01 22.4688	0 mas	0 mas	23.966137	-0.109252		3	G23.966-0.109 C				70.942		5487
9	+18 35 20.9427	-07 48 55.6745			24.147889	-0.00912	G24.149-0.009		G24.148-0.009	Image		6.6 GHz (II)	17.8	1.4	3.6	MERLIN	10.000	5 x 15	-11	+H₂O -CH₃OH I +CH₃OH II +OH	2006 Feb 22
	+18 35 20.9426	-07 48 55.674	4.35 mas	-21.72 mas	24.147889	-0.009120		1	G24.148-0.009 A				17.441		1048
	+18 35 20.9426	-07 48 55.674	0.2 mas	-0.1 mas	24.147889	-0.009120		2	G24.148-0.009 B				17.529		2459
	+18 35 20.9426	-07 48 55.674	0 mas	0 mas	24.147889	-0.009120		3	G24.148-0.009 C				17.792		3648
	+18 35 20.9426	-07 48 55.674	0.61 mas	5.99 mas	24.147889	-0.009120		4	G24.148-0.009 D				18.407		240
10	+18 34 55.7215	-07 19 6.6504			24.541101	0.312125	G24.535+0.319		G24.541+0.312	Image		6.6 GHz (II)	105.7	6.8	7.75	MERLIN	4.000	6 x 16	78	+H₂O +CH₃OH I +CH₃OH II +OH	2004 Nov 11
	+18 34 55.7215	-07 19 6.65034	-35.79 mas	59.58 mas	24.541101	0.312125		1	G24.541+0.312 A				103.754		233
	+18 34 55.7215	-07 19 6.6504	0 mas	0 mas	24.541101	0.312125		2	G24.541+0.312 B				105.688		7753
	+18 34 55.7215	-07 19 6.65036	-38.65 mas	37.36 mas	24.541101	0.312125		3	G24.541+0.312 C				106.215		316
	+18 34 55.7215	-07 19 6.65039	-10.87 mas	7.81 mas	24.541101	0.312125		4	G24.541+0.312 D				107.973		238
	+18 34 55.7215	-07 19 6.6504	-5.56 mas	2.97 mas	24.541101	0.312125		5	G24.541+0.312 E				106.479		2788
	+18 34 55.7215	-07 19 6.6504	0.03 mas	1 mas	24.541101	0.312125		6	G24.541+0.312 F				107.27		2700
	+18 34 55.7215	-07 19 6.6504	-1.88 mas	2.49 mas	24.541101	0.312125		7	G24.541+0.312 G				107.533		2005
	+18 34 55.7215	-07 19 6.65039	94.86 mas	14.33 mas	24.541101	0.312125		8	G24.541+0.312 H				108.324		106
	+18 34 55.7215	-07 19 6.65039	-26.05 mas	13.49 mas	24.541101	0.312125		9	G24.541+0.312 I				108.588		638
	+18 34 55.7215	-07 19 6.65038	-39.75 mas	16.37 mas	24.541101	0.312125		10	G24.541+0.312 J				109.467		339
	+18 34 55.7215	-07 19 6.65038	-39.94 mas	16.94 mas	24.541101	0.312125		11	G24.541+0.312 K				109.643		407
	+18 34 55.7215	-07 19 6.65038	-41.42 mas	18.08 mas	24.541101	0.312125		12	G24.541+0.312 L				110.082		728
11	+18 37 22.7127	-07 31 42.1439			24.634009	-0.323688	G24.634-0.324		G24.634-0.324	Image		6.6 GHz (II)	35.4	13.4	3.03	MERLIN	4.000	6 x 12	-60	-H₂O -CH₃OH I +CH₃OH II +OH	2007 Jun 13
	+18 37 22.7126	-07 31 42.1428	-18.67 mas	25.44 mas	24.634009	-0.323688		1	G24.634-0.324 A				34.725		457
	+18 37 22.7126	-07 31 42.1428	0 mas	0 mas	24.634009	-0.323688		2	G24.634-0.324 B				35.428		3027
	+18 37 22.7126	-07 31 42.1428	-62.27 mas	36.49 mas	24.634009	-0.323688		3	G24.634-0.324 C				43.862		2370
	+18 37 22.7126	-07 31 42.1428	-41.91 mas	45.72 mas	24.634009	-0.323688		4	G24.634-0.324 D				45.795		257
	+18 37 22.7126	-07 31 42.1428	-43.86 mas	45.12 mas	24.634009	-0.323688		5	G24.634-0.324 E				46.322		312
	+18 37 22.7126	-07 31 42.1428	-42.48 mas	45.42 mas	24.634009	-0.323688		6	G24.634-0.324 F				47.904		136
12	+18 37 16.9211	-06 38 30.5017			25.410557	0.104742	G25.411+0.105		G25.411+0.105	Image	Descr	6.6 GHz (II)	97.3	5.2	3.43	MERLIN	4.000	6 x 12	79	+H₂O +CH₃OH I +CH₃OH II +OH	2007 Jun 13
	+18 37 16.921	-06 38 30.5015	34.11 mas	111.28 mas	25.410557	0.104742		1	G25.411+0.105 A				93.765		142
	+18 37 16.921	-06 38 30.5016	109.1 mas	-19.44 mas	25.410557	0.104742		2	G25.411+0.105 B				94.117		82
	+18 37 16.921	-06 38 30.5015	115.86 mas	101.19 mas	25.410557	0.104742		3	G25.411+0.105 C				94.82		847
	+18 37 16.921	-06 38 30.5015	-16.74 mas	86.4 mas	25.410557	0.104742		4	G25.411+0.105 D				94.644		2374
	+18 37 16.921	-06 38 30.5016	-3.57 mas	-20.66 mas	25.410557	0.104742		5	G25.411+0.105 E				94.82		1025
	+18 37 16.921	-06 38 30.5015	-3.51 mas	123.81 mas	25.410557	0.104742		6	G25.411+0.105 F				96.928		323
	+18 37 16.921	-06 38 30.5016	3.2 mas	-5.48 mas	25.410557	0.104742		7	G25.411+0.105 G				96.928		2251
	+18 37 16.921	-06 38 30.5016	-46.65 mas	16.7 mas	25.410557	0.104742		8	G25.411+0.105 H				97.104		2468
	+18 37 16.921	-06 38 30.5016	0 mas	0 mas	25.410557	0.104742		9	G25.411+0.105 I				97.28		3433
	+18 37 16.921	-06 38 30.5015	176.24 mas	50.01 mas	25.410557	0.104742		10	G25.411+0.105 J				98.861		139
13	+18 39 55.9257	-05 38 44.6424			26.597807	-0.023675	G26.597-0.024		G26.598-0.024	Image	Descr	6.6 GHz (II)	24.2	3.3	3.04	MERLIN	4.000	6 x 12	-76	+H₂O -CH₃OH I +CH₃OH II	2007 Jun 13
	+18 39 55.9258	-05 38 44.6424	2.15 mas	-0.11 mas	26.597807	-0.023675		1	G26.598-0.024 A				22.952		182
	+18 39 55.9258	-05 38 44.6424	0 mas	0 mas	26.597807	-0.023675		2	G26.598-0.024 B				24.182		3043
	+18 39 55.9258	-05 38 44.6426	84.52 mas	-169.57 mas	26.597807	-0.023675		3	G26.598-0.024 C				24.709		1368
	+18 39 55.9258	-05 38 44.6425	335.5 mas	-131.13 mas	26.597807	-0.023675		4	G26.598-0.024 D				25.061		714
	+18 39 55.9258	-05 38 44.6426	78.86 mas	-159.74 mas	26.597807	-0.023675		5	G26.598-0.024 E				25.588		76
	+18 39 55.9258	-05 38 44.6425	338.89 mas	-124.8 mas	26.597807	-0.023675		6	G26.598-0.024 F				25.939		97
14	+18 40 30.5461	-05 01 5.3947			27.221457	0.136115	G27.221+0.136		G27.221+0.136	Image		6.6 GHz (II)	118.8	16.1	12.54	MERLIN	4.000	6 x 16	6	+H₂O -CH₃OH I +CH₃OH II +OH	2004 Nov 11
	+18 40 30.546	-05 01 5.39392	-11.66 mas	77.86 mas	27.221457	0.136115		1	G27.221+0.136 A				105.424		253
	+18 40 30.546	-05 01 5.39392	-1 mas	77.84 mas	27.221457	0.136115		2	G27.221+0.136 B				106.391		94
	+18 40 30.546	-05 01 5.39394	-33.26 mas	55.49 mas	27.221457	0.136115		3	G27.221+0.136 C				107.182		245
	+18 40 30.546	-05 01 5.39397	-33.86 mas	32.96 mas	27.221457	0.136115		4	G27.221+0.136 D				109.731		1239
	+18 40 30.546	-05 01 5.39397	-34.3 mas	34.22 mas	27.221457	0.136115		5	G27.221+0.136 E				110.258		1182
	+18 40 30.546	-05 01 5.39396	-33.01 mas	35.19 mas	27.221457	0.136115		6	G27.221+0.136 F				111.225		467
	+18 40 30.546	-05 01 5.39397	-19.44 mas	27.07 mas	27.221457	0.136115		7	G27.221+0.136 G				112.28		563
	+18 40 30.546	-05 01 5.39397	-18.67 mas	27.11 mas	27.221457	0.136115		8	G27.221+0.136 H				112.719		906
	+18 40 30.546	-05 01 5.39397	-20.17 mas	27.87 mas	27.221457	0.136115		9	G27.221+0.136 I				114.828		166
	+18 40 30.546	-05 01 5.39398	-18.42 mas	23.17 mas	27.221457	0.136115		10	G27.221+0.136 J				115.268		150
	+18 40 30.546	-05 01 5.39398	-19.01 mas	24.43 mas	27.221457	0.136115		11	G27.221+0.136 K				115.444		158
	+18 40 30.546	-05 01 5.39395	-24.19 mas	47.17 mas	27.221457	0.136115		12	G27.221+0.136 L				115.707		236
	+18 40 30.546	-05 01 5.39399	-24.78 mas	7.86 mas	27.221457	0.136115		13	G27.221+0.136 M				116.586		437
	+18 40 30.546	-05 01 5.39399	-53.19 mas	8.62 mas	27.221457	0.136115		14	G27.221+0.136 N				117.114		6519
	+18 40 30.546	-05 01 5.39401	8.93 mas	-12.14 mas	27.221457	0.136115		15	G27.221+0.136 O				117.729		448
	+18 40 30.546	-05 01 5.39399	-54.31 mas	7.67 mas	27.221457	0.136115		16	G27.221+0.136 P				117.817		5642
	+18 40 30.546	-05 01 5.39401	-9.36 mas	-11.49 mas	27.221457	0.136115		17	G27.221+0.136 Q				118.168		1991
	+18 40 30.546	-05 01 5.39399	-55.31 mas	7.03 mas	27.221457	0.136115		18	G27.221+0.136 R				118.432		4831
	+18 40 30.546	-05 01 5.394	0 mas	0 mas	27.221457	0.136115		19	G27.221+0.136 S				118.783		12535
	+18 40 30.546	-05 01 5.39399	-8.69 mas	13.18 mas	27.221457	0.136115		20	G27.221+0.136 T				118.959		765
	+18 40 30.546	-05 01 5.39401	-70.74 mas	-6.85 mas	27.221457	0.136115		21	G27.221+0.136 U				119.223		209
	+18 40 30.546	-05 01 5.39401	-9.23 mas	-5.75 mas	27.221457	0.136115		22	G27.221+0.136 V				119.311		232
	+18 40 30.546	-05 01 5.394	-34.36 mas	4.92 mas	27.221457	0.136115		23	G27.221+0.136 W				119.311		135
	+18 40 30.546	-05 01 5.39399	-9.41 mas	11.35 mas	27.221457	0.136115		24	G27.221+0.136 X				119.75		101
	+18 40 30.546	-05 01 5.39402	-15.45 mas	-18.48 mas	27.221457	0.136115		25	G27.221+0.136 Y				120.365		536
	+18 40 30.546	-05 01 5.39396	-20.2 mas	41.87 mas	27.221457	0.136115		26	G27.221+0.136 Z				120.19		1339
	+18 40 30.546	-05 01 5.39396	-17.43 mas	44.05 mas	27.221457	0.136115		27	G27.221+0.136 A1				121.069		218
15	+18 42 37.348	-03 29 40.9216			28.817175	0.364747	G28.817+0.365		G28.817+0.365	Image		6.6 GHz (II)	90.7	5.2	3.14	MERLIN	4.000	6 x 11	45	+H₂O +CH₃OH I +CH₃OH II +OH	2007 Jun 14
	+18 42 37.3481	-03 29 40.9201	-73.21 mas	-56.06 mas	28.817175	0.364746		1	G28.817+0.365 A				87.735		325
	+18 42 37.3481	-03 29 40.9201	-63.99 mas	-72.96 mas	28.817175	0.364746		2	G28.817+0.365 B				88.087		183
	+18 42 37.3481	-03 29 40.92	0 mas	0 mas	28.817175	0.364746		3	G28.817+0.365 C				90.723		3137
	+18 42 37.3481	-03 29 40.92	2.86 mas	17.42 mas	28.817175	0.364746		4	G28.817+0.365 D				91.074		1440
	+18 42 37.3481	-03 29 40.92	2.78 mas	3.58 mas	28.817175	0.364746		5	G28.817+0.365 E				91.25		896
	+18 42 37.3481	-03 29 40.92	4.01 mas	20.09 mas	28.817175	0.364746		6	G28.817+0.365 F				91.601		2511
	+18 42 37.3481	-03 29 40.92	-3.13 mas	10.38 mas	28.817175	0.364746		7	G28.817+0.365 G				92.129		743
	+18 42 37.3481	-03 29 40.92	-2.71 mas	26.78 mas	28.817175	0.364746		8	G28.817+0.365 H				92.656		2116
16	+18 46 25.0262	-02 17 40.7539			30.317492	0.070087	G30.317+0.070		G30.318+0.070	Image		6.6 GHz (II)	36.1	1.9	0.52	MERLIN	4.000	6 x 11	-50	+H₂O +CH₃OH II	2007 Jun 14
	+18 46 25.0262	-02 17 40.7544	-23.84 mas	22.64 mas	30.317492	0.070087		1	G30.318+0.070 A				35.192		300
	+18 46 25.0262	-02 17 40.7544	0 mas	0 mas	30.317492	0.070087		2	G30.318+0.070 B				36.07		514
	+18 46 25.0262	-02 17 40.7544	5.68 mas	-5.04 mas	30.317492	0.070087		3	G30.318+0.070 C				36.949		144
17	+18 47 52.2998	-02 23 16.0539			30.400399	-0.295719	G30.400-0.296		G30.400-0.296	Image		6.6 GHz (II)	98.5	6.7	2.77	MERLIN	4.000	6 x 11	47	+H₂O +CH₃OH I +CH₃OH II	2007 Jun 14
	+18 47 52.2998	-02 23 16.0548	4.49 mas	-11.83 mas	30.400399	-0.295720		1	G30.400-0.296 A				98.104		2139
	+18 47 52.2998	-02 23 16.0548	0 mas	0 mas	30.400399	-0.295720		2	G30.400-0.296 B				98.455		2765
	+18 47 52.2998	-02 23 16.0548	-31.03 mas	-45.22 mas	30.400399	-0.295720		3	G30.400-0.296 C				100.388		1581
	+18 47 52.2998	-02 23 16.0547	-27.71 mas	85.8 mas	30.400399	-0.295720		4	G30.400-0.296 D				101.618		331
	+18 47 52.2998	-02 23 16.0547	-19.17 mas	86.2 mas	30.400399	-0.295720		5	G30.400-0.296 E				103.727		1914
	+18 47 52.2998	-02 23 16.0547	67.48 mas	134.78 mas	30.400399	-0.295720		6	G30.400-0.296 F				103.727		497
	+18 47 52.2998	-02 23 16.0547	66.42 mas	135.29 mas	30.400399	-0.295720		7	G30.400-0.296 G				104.43		260
18	+18 46 43.8551	-01 30 54.1551			31.046974	0.356103	G31.047+0.356		G31.047+0.356	Image		6.6 GHz (II)	80.7	6.3	1.99	MERLIN	4.000	6 x 11	72	+H₂O -CH₃OH I +CH₃OH II	2007 Jun 14
	+18 46 43.855	-01 30 54.1548	-59.62 mas	-28.6 mas	31.046974	0.356103		1	G31.047+0.356 A				81.058		277
	+18 46 43.855	-01 30 54.1548	-0.97 mas	7.78 mas	31.046974	0.356103		2	G31.047+0.356 B				78.07		281
	+18 46 43.855	-01 30 54.1548	-1.3 mas	3.29 mas	31.046974	0.356103		3	G31.047+0.356 C				79.125		1169
	+18 46 43.855	-01 30 54.1548	0.47 mas	1.53 mas	31.046974	0.356103		4	G31.047+0.356 D				80.179		544
	+18 46 43.855	-01 30 54.1548	0 mas	0 mas	31.046974	0.356103		5	G31.047+0.356 E				80.882		1989
	+18 46 43.855	-01 30 54.1548	-0.4 mas	-1.53 mas	31.046974	0.356103		6	G31.047+0.356 F				81.058		1563
	+18 46 43.855	-01 30 54.1548	-47.86 mas	-6.97 mas	31.046974	0.356103		7	G31.047+0.356 G				82.991		617
	+18 46 43.855	-01 30 54.1548	-25.86 mas	9.65 mas	31.046974	0.356103		8	G31.047+0.356 H				84.045		101
19	+18 48 41.9411	-01 10 2.5281			31.580767	0.076993	G31.581+0.077		G31.581+0.077	Image		6.6 GHz (II)	95.6	4.8	2.72	MERLIN	4.000	6 x 11	79	+H₂O +CH₃OH I +CH₃OH II	2007 Jun 14
	+18 48 41.9412	-01 10 2.5284	0 mas	0 mas	31.580767	0.076992		1	G31.581+0.077 A				95.643		2722
	+18 48 41.9412	-01 10 2.52834	-60.94 mas	57.61 mas	31.580767	0.076993		2	G31.581+0.077 B				97.752		349
	+18 48 41.9412	-01 10 2.52841	37.35 mas	-7.05 mas	31.580767	0.076992		3	G31.581+0.077 C				98.104		809
	+18 48 41.9412	-01 10 2.5284	32.26 mas	-3.76 mas	31.580767	0.076992		4	G31.581+0.077 D				98.455		376
	+18 48 41.9412	-01 10 2.52831	149.71 mas	94.03 mas	31.580767	0.076992		5	G31.581+0.077 E				98.631		493
	+18 48 41.9412	-01 10 2.52832	-61.97 mas	79.92 mas	31.580767	0.076993		6	G31.581+0.077 F				98.806		292
	+18 48 41.9412	-01 10 2.52831	149.88 mas	93.22 mas	31.580767	0.076992		7	G31.581+0.077 G				98.806		2045
	+18 48 41.9412	-01 10 2.52833	158.13 mas	69.42 mas	31.580767	0.076992		8	G31.581+0.077 H				99.509		358
	+18 48 41.9412	-01 10 2.52834	151.68 mas	56.51 mas	31.580767	0.076992		9	G31.581+0.077 I				99.685		1099
20	+18 51 25.5829	+00 04 8.333			32.991995	0.034023	G32.993+0.038		G32.992+0.034	Image		6.6 GHz (II)	91.8	5.2	6.21	MERLIN	6.000	6 x 13	-80	+H₂O +CH₃OH I +CH₃OH II +OH	2007 Jun 15
	+18 51 25.5828	+00 04 8.33156	13.35 mas	-44.58 mas	32.991994	0.034023		1	G32.992+0.034 A				89.724		321
	+18 51 25.5828	+00 04 8.33165	-51.58 mas	49.87 mas	32.991994	0.034023		2	G32.992+0.034 B				90.339		396
	+18 51 25.5828	+00 04 8.33157	14.76 mas	-34.48 mas	32.991994	0.034023		3	G32.992+0.034 C				90.602		1967
	+18 51 25.5828	+00 04 8.3316	26.8 mas	1.16 mas	32.991994	0.034023		4	G32.992+0.034 D				90.954		4650
	+18 51 25.5828	+00 04 8.33159	-4.74 mas	-6.02 mas	32.991994	0.034023		5	G32.992+0.034 E				91.393		493
	+18 51 25.5828	+00 04 8.3316	28.37 mas	0.98 mas	32.991994	0.034023		6	G32.992+0.034 F				91.481		1856
	+18 51 25.5828	+00 04 8.33164	-16.14 mas	37.98 mas	32.991994	0.034023		7	G32.992+0.034 G				91.656		465
	+18 51 25.5828	+00 04 8.3316	0 mas	0 mas	32.991994	0.034023		8	G32.992+0.034 H				91.832		6212
	+18 51 25.5828	+00 04 8.33159	34.73 mas	-14.96 mas	32.991994	0.034023		9	G32.992+0.034 I				92.184		394
	+18 51 25.5828	+00 04 8.33159	35.56 mas	-14.73 mas	32.991994	0.034023		10	G32.992+0.034 J				92.447		163
	+18 51 25.5828	+00 04 8.33158	25 mas	-19.68 mas	32.991994	0.034023		11	G32.992+0.034 K				92.711		199
	+18 51 25.5828	+00 04 8.3316	51.09 mas	-1.6 mas	32.991994	0.034023		12	G32.992+0.034 L				94.204		600
	+18 51 25.5828	+00 04 8.3316	49.89 mas	-4.56 mas	32.991994	0.034023		13	G32.992+0.034 M				94.731		445
21	+18 53 32.563	+00 31 39.18			33.641373	-0.227733	G33.640-0.227		G33.641-0.228	Image		6.6 GHz (II)	58.8	5.3	28.3	MERLIN	10.000	6 x 16	66	+H₂O -CH₃OH I +CH₃OH II +OH	2003 Jun 08
	+18 53 32.563	+00 31 39.18	0 mas	0 mas	33.641373	-0.227733		1	G33.641-0.228 A				58.84		28300
	+18 53 32.563	+00 31 39.18	-9.6 mas	-12.3 mas	33.641373	-0.227733		2	G33.641-0.228 B				59.54		4105
	+18 53 32.563	+00 31 39.18	-14.4 mas	-20.1 mas	33.641373	-0.227733		3	G33.641-0.228 C				59.8		12260
	+18 53 32.563	+00 31 39.18	69.6 mas	-15.9 mas	33.641373	-0.227733		4	G33.641-0.228 D				60.33		20402
	+18 53 32.563	+00 31 39.18	61.95 mas	-25.9 mas	33.641373	-0.227733		5	G33.641-0.228 E				60.42		2280
	+18 53 32.563	+00 31 39.18	60.9 mas	-27 mas	33.641373	-0.227733		6	G33.641-0.228 F				60.51		1621
	+18 53 32.563	+00 31 39.18	13.35 mas	-28.6 mas	33.641373	-0.227733		7	G33.641-0.228 G				60.86		1672
	+18 53 32.563	+00 31 39.18	65.4 mas	-14.6 mas	33.641373	-0.227733		8	G33.641-0.228 H				60.94		10447
	+18 53 32.563	+00 31 39.18	76.35 mas	-2.3 mas	33.641373	-0.227733		9	G33.641-0.228 I				61.12		356
	+18 53 32.563	+00 31 39.18	56.25 mas	-17 mas	33.641373	-0.227733		10	G33.641-0.228 J				61.3		207
	+18 53 32.563	+00 31 39.1801	128.39 mas	55.9 mas	33.641373	-0.227733		11	G33.641-0.228 K				61.3		176
	+18 53 32.563	+00 31 39.18	82.2 mas	7.6 mas	33.641373	-0.227733		12	G33.641-0.228 L				61.82		365
	+18 53 32.563	+00 31 39.1801	122.54 mas	63.5 mas	33.641373	-0.227733		13	G33.641-0.228 M				62.26		893
	+18 53 32.563	+00 31 39.1801	111.3 mas	50 mas	33.641373	-0.227733		14	G33.641-0.228 N				62.18		109
	+18 53 32.563	+00 31 39.18	42.6 mas	-18.2 mas	33.641373	-0.227733		15	G33.641-0.228 O				62.44		5440
	+18 53 32.563	+00 31 39.18	42.6 mas	-17.8 mas	33.641373	-0.227733		16	G33.641-0.228 P				62.7		20690
	+18 53 32.563	+00 31 39.18	42.6 mas	-16.6 mas	33.641373	-0.227733		17	G33.641-0.228 Q				62.97		9325
	+18 53 32.563	+00 31 39.18	30.45 mas	-19.7 mas	33.641373	-0.227733		18	G33.641-0.228 R				63.14		1090
22	+18 53 25.0183	+00 55 25.976			33.979756	-0.019013	G33.980-0.019		G33.980-0.019	Image		6.6 GHz (II)	58.9	6.9	3.78	MERLIN	6.000	6 x 13	82	+H₂O +CH₃OH II	2007 Jun 15
	+18 53 25.0183	+00 55 25.9752	0 mas	0 mas	33.979756	-0.019013		1	G33.980-0.019 A				58.886		3782
	+18 53 25.0183	+00 55 25.9752	5.12 mas	0.11 mas	33.979756	-0.019013		2	G33.980-0.019 B				59.501		434
	+18 53 25.0183	+00 55 25.9752	-50.2 mas	-23.97 mas	33.979756	-0.019013		3	G33.980-0.019 C				60.292		315
	+18 53 25.0183	+00 55 25.9752	-29.67 mas	1.78 mas	33.979756	-0.019013		4	G33.980-0.019 D				60.555		254
	+18 53 25.0183	+00 55 25.9752	-49.19 mas	-16.88 mas	33.979756	-0.019013		5	G33.980-0.019 E				61.258		784
	+18 53 25.0183	+00 55 25.9752	30.18 mas	-5.59 mas	33.979756	-0.019013		6	G33.980-0.019 F				61.609		515
	+18 53 25.0183	+00 55 25.9752	30.56 mas	-3.3 mas	33.979756	-0.019013		7	G33.980-0.019 G				62.312		276
	+18 53 25.0183	+00 55 25.9752	16.23 mas	-27.91 mas	33.979756	-0.019013		8	G33.980-0.019 H				64.157		497
	+18 53 25.0183	+00 55 25.9752	-32.45 mas	-40.91 mas	33.979756	-0.019013		9	G33.980-0.019 I				65.387		236
23	+18 55 5.22296	+01 34 36.2612			34.751139	-0.092701	G34.751-0.093		G34.751-0.093	Image		6.6 GHz (II)	52.7	3.1	1.95	MERLIN	6.000	6 x 13	-56	+H₂O -CH₃OH I +CH₃OH II	2007 Jun 15
	+18 55 5.22288	+01 34 36.2604	28.86 mas	-27.87 mas	34.751138	-0.092701		1	G34.751-0.093 A				50.627		224
	+18 55 5.22288	+01 34 36.2604	-10.84 mas	-3.57 mas	34.751138	-0.092701		2	G34.751-0.093 B				51.769		718
	+18 55 5.22288	+01 34 36.2604	0 mas	0 mas	34.751138	-0.092701		3	G34.751-0.093 C				52.736		1954
	+18 55 5.22288	+01 34 36.2604	-3.6 mas	-0.94 mas	34.751138	-0.092701		4	G34.751-0.093 D				53.175		1763
24	+18 57 16.894	+02 27 57.91			35.792692	-0.1747	G35.793-0.175		G35.793-0.175	Image		6.6 GHz (II)	60.7	2.8	9.7	MERLIN	10.000	6 x 16	65	+H₂O +CH₃OH I +CH₃OH II +OH	2003 Jun 08
	+18 57 16.8941	+02 27 57.9096	-2.4 mas	-0.86 mas	35.792692	-0.174701		1	G35.793-0.175 A				60.06		889
	+18 57 16.8941	+02 27 57.9096	0 mas	0 mas	35.792692	-0.174701		2	G35.793-0.175 B				60.68		9702
	+18 57 16.8941	+02 27 57.9096	1.95 mas	0.81 mas	35.792692	-0.174701		3	G35.793-0.175 C				61.3		6338
	+18 57 16.8941	+02 27 57.9096	3 mas	1.21 mas	35.792692	-0.174701		4	G35.793-0.175 D				61.82		5960
	+18 57 16.8941	+02 27 57.9096	4.35 mas	2.21 mas	35.792692	-0.174701		5	G35.793-0.175 E				62.35		1225
25	+18 55 16.7934	+03 05 5.414			36.115159	0.552417	G36.115+0.554		G36.115+0.552	Image	Descr	6.6 GHz (II)	73	14.8	11.74	MERLIN	10.000	6 x 16	-79	+H₂O +CH₃OH I +CH₃OH II +OH	2003 Jun 08
	+18 55 16.7934	+03 05 5.41362	-0.00107203	421.77 mas	36.115159	0.552417		1	G36.115+0.552 A				70.395		10779
	+18 55 16.7934	+03 05 5.41363	-0.00107575	431.45 mas	36.115159	0.552417		2	G36.115+0.552 B				70.834		254
	+18 55 16.7935	+03 05 5.4132	-5.15 mas	0.89 mas	36.115159	0.552417		3	G36.115+0.552 C				71.186		1066
	+18 55 16.7934	+03 05 5.41362	-0.00106805	420.04 mas	36.115159	0.552417		4	G36.115+0.552 D				71.449		617
	+18 55 16.7934	+03 05 5.41362	-0.00106254	420.67 mas	36.115159	0.552417		5	G36.115+0.552 E				71.801		2921
	+18 55 16.7935	+03 05 5.41319	-24.99 mas	-12.51 mas	36.115159	0.552417		6	G36.115+0.552 F				71.977		1386
	+18 55 16.7934	+03 05 5.41362	-0.00106417	421.85 mas	36.115159	0.552417		7	G36.115+0.552 G				72.416		2973
	+18 55 16.7934	+03 05 5.4135	-0.0011688	300.89 mas	36.115159	0.552417		8	G36.115+0.552 H				72.504		506
	+18 55 16.7934	+03 05 5.41362	-0.00106377	421.09 mas	36.115159	0.552417		9	G36.115+0.552 I				72.855		11194
	+18 55 16.7935	+03 05 5.4132	0 mas	0 mas	36.115159	0.552417		10	G36.115+0.552 J				73.031		11744
	+18 55 16.7935	+03 05 5.41317	-39.35 mas	-27.35 mas	36.115159	0.552417		11	G36.115+0.552 K				73.119		1431
	+18 55 16.7934	+03 05 5.41336	-0.00116335	155.91 mas	36.115159	0.552417		12	G36.115+0.552 L				73.821		1134
	+18 55 16.7935	+03 05 5.41316	-48.5 mas	-43.38 mas	36.115159	0.552417		13	G36.115+0.552 M				74.173		2845
	+18 55 16.7935	+03 05 5.41315	-43.64 mas	-45.41 mas	36.115159	0.552417		14	G36.115+0.552 N				74.436		6641
	+18 55 16.7935	+03 05 5.41321	-9.89 mas	12.92 mas	36.115159	0.552417		15	G36.115+0.552 O				75.139		371
	+18 55 16.7935	+03 05 5.41315	-46.41 mas	-46.64 mas	36.115159	0.552417		16	G36.115+0.552 P				75.579		316
	+18 55 16.7935	+03 05 5.41321	7.32 mas	14.73 mas	36.115159	0.552417		17	G36.115+0.552 Q				75.754		431
	+18 55 16.7935	+03 05 5.41322	0.2 mas	16.23 mas	36.115159	0.552417		18	G36.115+0.552 R				76.106		3900
	+18 55 16.7934	+03 05 5.41362	-0.00112295	420.75 mas	36.115159	0.552417		19	G36.115+0.552 S				81.289		1619
	+18 55 16.7934	+03 05 5.41364	-0.00110047	436.98 mas	36.115159	0.552417		20	G36.115+0.552 T				81.553		447
	+18 55 16.7934	+03 05 5.41364	-0.00110312	438.31 mas	36.115159	0.552417		21	G36.115+0.552 U				81.816		513
	+18 55 16.7934	+03 05 5.41361	-0.00111633	407.04 mas	36.115159	0.552417		22	G36.115+0.552 V				81.904		1010
	+18 55 16.7934	+03 05 5.41362	-0.00111355	420.17 mas	36.115159	0.552417		23	G36.115+0.552 W				82.168		5062
	+18 55 16.7934	+03 05 5.41362	-0.00111644	417.66 mas	36.115159	0.552417		24	G36.115+0.552 X				83.925		1652
26	+18 57 59.1229	+03 24 6.1124			36.70531	0.096183	G36.705+0.096		G36.705+0.096	Image		6.6 GHz (II)	53.1	10.6	7.58	MERLIN	6.000	6 x 13	-16	+H₂O -CH₃OH I +CH₃OH II +OH	2007 Jun 15
	+18 57 59.1228	+03 24 6.1128	1.34 mas	1.15 mas	36.705310	0.096183		1	G36.705+0.096 A				52.56		348
	+18 57 59.1228	+03 24 6.1128	0 mas	0 mas	36.705310	0.096183		2	G36.705+0.096 B				53.087		7576
	+18 57 59.1228	+03 24 6.1128	-0.92 mas	-0.16 mas	36.705310	0.096183		3	G36.705+0.096 C				53.79		2413
	+18 57 59.1228	+03 24 6.1128	-1.89 mas	-1.2 mas	36.705310	0.096183		4	G36.705+0.096 D				54.405		4629
	+18 57 59.1228	+03 24 6.11279	-2.01 mas	-9.96 mas	36.705310	0.096183		5	G36.705+0.096 E				54.844		1309
	+18 57 59.1228	+03 24 6.1128	-1.56 mas	-3.22 mas	36.705310	0.096183		6	G36.705+0.096 F				55.108		420
	+18 57 59.1228	+03 24 6.11285	-14.1 mas	52.06 mas	36.705310	0.096183		7	G36.705+0.096 G				62.137		1974
	+18 57 59.1228	+03 24 6.11285	-0.39 mas	45.61 mas	36.705310	0.096183		8	G36.705+0.096 H				63.015		153
27	+18 59 3.64233	+03 37 45.0861			37.030254	-0.038587	G37.033-0.035		G37.030-0.039	Image		6.6 GHz (II)	78.6	0.7	0.69	MERLIN	7.000	6 x 14	-15	+H₂O -CH₃OH I +CH₃OH II +OH	2006 Feb 23
	+18 59 3.64224	+03 37 45.0876	0 mas	0 mas	37.030254	-0.038587		1	G37.030-0.039 A				78.585		691
	+18 59 3.64224	+03 37 45.0876	-0.44 mas	0.2 mas	37.030254	-0.038587		2	G37.030-0.039 B				78.761		224
28	+18 58 26.7977	+04 20 45.457			37.59789	0.425102	G37.598+0.425		G37.598+0.425	Image		6.6 GHz (II)	85.8	4.5	3.91	MERLIN	7.000	6 x 14	87	+H₂O +CH₃OH I +CH₃OH II	2006 Feb 23
	+18 58 26.7977	+04 20 45.456	91.63 mas	-11.15 mas	37.597889	0.425102		1	G37.598+0.425 A				82.802		251
	+18 58 26.7977	+04 20 45.456	0 mas	0 mas	37.597889	0.425102		2	G37.598+0.425 B				85.789		3911
	+18 58 26.7977	+04 20 45.456	-0.33 mas	-0.89 mas	37.597889	0.425102		3	G37.598+0.425 C				85.438		891
	+18 58 26.7977	+04 20 45.456	26.04 mas	12.96 mas	37.597889	0.425102		4	G37.598+0.425 D				86.931		2407
	+18 58 26.7977	+04 20 45.456	25.48 mas	13.18 mas	37.597889	0.425102		5	G37.598+0.425 E				87.195		465
	+18 58 26.7977	+04 20 45.456	39.38 mas	6.44 mas	37.597889	0.425102		6	G37.598+0.425 F				87.283		2543
	+18 58 26.7977	+04 20 45.456	63.51 mas	4.07 mas	37.597889	0.425102		7	G37.598+0.425 G				88.6		395
	+18 58 26.7977	+04 20 45.456	66.23 mas	-7.53 mas	37.597889	0.425102		8	G37.598+0.425 H				88.688		202
29	+19 01 50.4695	+04 24 18.9559			38.037531	-0.300308	G38.038-0.300		G38.038-0.3	Image		6.6 GHz (II)	55.7	4.2	2.17	MERLIN	7.000	6 x 14	10	+H₂O -CH₃OH I +CH₃OH II +OH	2006 Feb 23
	+19 01 50.4694	+04 24 18.9576	0 mas	0 mas	38.037532	-0.300307		1	G38.038-0.3 A				55.656		2168
	+19 01 50.4694	+04 24 18.9576	6.29 mas	-15.55 mas	38.037532	-0.300307		2	G38.038-0.3 B				57.062		507
	+19 01 50.4694	+04 24 18.9576	9.37 mas	-16.4 mas	38.037532	-0.300307		3	G38.038-0.3 C				57.413		1046
	+19 01 50.4694	+04 24 18.9576	13.94 mas	-1.81 mas	38.037532	-0.300307		4	G38.038-0.3 D				58.204		1434
	+19 01 50.4694	+04 24 18.9576	20.84 mas	-15.06 mas	38.037532	-0.300307		5	G38.038-0.3 E				59.522		215
	+19 01 50.4694	+04 24 18.9576	19.93 mas	12.8 mas	38.037532	-0.300307		6	G38.038-0.3 F				59.522		224
	+19 01 50.4694	+04 24 18.9576	19.05 mas	-3.89 mas	38.037532	-0.300307		7	G38.038-0.3 G				59.609		281
30	+19 01 18.7323	+04 39 34.2938			38.203269	-0.066733	G38.203-0.067		G38.203-0.067	Image		6.6 GHz (II)	79.6	6	0.83	MERLIN	7.000	6 x 14	-44	+H₂O -CH₃OH I +CH₃OH II	2006 Feb 23
	+19 01 18.7322	+04 39 34.2936	0 mas	0 mas	38.203269	-0.066732		1	G38.203-0.067 A				79.64		828
	+19 01 18.7322	+04 39 34.2936	-54.81 mas	20.52 mas	38.203269	-0.066732		2	G38.203-0.067 B				80.518		169
	+19 01 18.7322	+04 39 34.2936	11.26 mas	13.5 mas	38.203269	-0.066732		3	G38.203-0.067 C				80.606		157
	+19 01 18.7322	+04 39 34.2938	-101.84 mas	154.22 mas	38.203269	-0.066732		4	G38.203-0.067 D				83.856		173
	+19 01 18.7322	+04 39 34.2936	-35.37 mas	29.94 mas	38.203269	-0.066732		5	G38.203-0.067 E				83.944		152
	+19 01 18.7322	+04 39 34.2936	-35.23 mas	44.97 mas	38.203269	-0.066732		6	G38.203-0.067 F				83.944		195
	+19 01 18.7322	+04 39 34.2936	-33.87 mas	31.62 mas	38.203269	-0.066732		7	G38.203-0.067 G				84.208		198
31	+19 00 58.0404	+05 42 43.9214			39.100033	0.491234	G39.100+0.491		G39.100+0.491	Image		6.6 GHz (II)	15.3	3.3	2.07	MERLIN	7.000	6 x 14	52	+H₂O +CH₃OH I +CH₃OH II +OH	2006 Feb 23
	+19 00 58.0404	+05 42 43.92	-5.7 mas	-38.57 mas	39.100033	0.491234		1	G39.100+0.491 A				14.63		222
	+19 00 58.0404	+05 42 43.92	-7.83 mas	-11.43 mas	39.100033	0.491234		2	G39.100+0.491 B				14.63		453
	+19 00 58.0404	+05 42 43.92	13.31 mas	-22.06 mas	39.100033	0.491234		3	G39.100+0.491 C				15.772		314
	+19 00 58.0404	+05 42 43.9201	115.08 mas	103.88 mas	39.100033	0.491234		4	G39.100+0.491 D				15.86		623
	+19 00 58.0404	+05 42 43.9201	116.61 mas	75.89 mas	39.100033	0.491234		5	G39.100+0.491 E				15.86		545
	+19 00 58.0404	+05 42 43.92	13.31 mas	-22 mas	39.100033	0.491234		6	G39.100+0.491 F				15.86		769
	+19 00 58.0404	+05 42 43.92	0 mas	0 mas	39.100033	0.491234		7	G39.100+0.491 G				15.245		2068
	+19 00 58.0404	+05 42 43.92	-5.13 mas	-5.81 mas	39.100033	0.491234		8	G39.100+0.491 H				15.684		1140
	+19 00 58.0404	+05 42 43.92	-4.92 mas	-7.13 mas	39.100033	0.491234		9	G39.100+0.491 I				15.948		1042
	+19 00 58.0404	+05 42 43.92	6.66 mas	-8.18 mas	39.100033	0.491234		10	G39.100+0.491 J				17.617		696

Non-detection table from Bartkiewicz et al. (2009)