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NAM06 - OH masers associated with bipolar outflow in ON1

Interferometry data

Short title: Nammahachak et al. (2006)
Authors: Nammahachak, S.Asanok, K.Hutawarakorn Kramer, B.Cohen, R. J.Muanwong, O.Gasiprong, N.
Journal: Monthly Notices of the Royal Astronomical Society, Volume 371, Issue 2, pp. 619-625.
Bibcode:
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Target type: High_mass_SFR
Observations category: SF.general
Facility type: interferometer
Transitions: OH_1612,OH_1665,OH_1667,OH_1720

Abstract
Multi-Element Radio-Linked Interferometer Network polarization measurements of the OH 18-cm masers in ON1 are presented. OH maser emission is detected in all four ground state lines. The bulk of the masers lie in an elongated distribution covering 2 arcsec at position angle 130�, near the southern edge of the ultracompact HII region. The maser distribution is orthogonal to the bipolar outflow seen in HCO⁺ at position angle (PA) 44�. An isolated group of 1720-MHz masers is also seen 6 arcsec to the east. The magnetic field deduced from Zeeman splitting of the OH maser lines shows a large-scale order, with field values ranging from -0.4 to -4.6 mG.

Abstract

Multi-Element Radio-Linked Interferometer Network polarization measurements of the OH 18-cm masers in ON1 are presented. OH maser emission is detected in all four ground state lines. The bulk of the masers lie in an elongated distribution covering 2 arcsec at position angle 130�, near the southern edge of the ultracompact HII region. The maser distribution is orthogonal to the bipolar outflow seen in HCO⁺ at position angle (PA) 44�. An isolated group of 1720-MHz masers is also seen 6 arcsec to the east. The magnetic field deduced from Zeeman splitting of the OH maser lines shows a large-scale order, with field values ranging from -0.4 to -4.6 mG.

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Detection table from Nammahachak et al. (2006)

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	grpv	#	Source name	Image	Line	Frequency	V_peak	F_peak	Telescope	V_step	RMS	Beam	PA	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)						OH	(MHz)	(km/s)	(Jy/beam)		(km/s)	(mJy/beam)	(arcsec)	(deg.)	Yes/No		(kpc)
1	+20 10 9.23628	+31 31 36.3784			69.540576	-0.976006	G69.540-0.976	G69.5399-0.9757		ON1	Image	1612 MHz;	1612	14.43 .. 15.04	0.16 .. 0.53	MERLIN	0.21	40.000	0.16 x 0.14	23	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1996 Mar 1 and 2
	+20 10 9.04596	+31 31 35.6212	-2853 mas	-758 mas	69.540031	-0.975554			1	ON1			1612	14.43	0.53
	+20 10 9.08436	+31 31 35.0472	-2277 mas	-1332 mas	69.539972	-0.975755			2	ON1			1612	15.04	0.16
2	+20 10 9.23628	+31 31 36.3784			69.540576	-0.976006	G69.540-0.976	G69.5399-0.9757		ON1	Image	1665 MHz;	1665	6.16 .. 16.37	0.14 .. 22.57	MERLIN	0.21	20.000	0.16 x 0.14	23	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1996 Mar 1 and 2
	+20 10 9.09976	+31 31 35.9932	-2046 mas	-386 mas	69.540222	-0.975657			1	ON1			1665	6.16	0.37
	+20 10 9.12763	+31 31 34.5762	-1628 mas	-1803 mas	69.539946	-0.975955			2	ON1			1665	11.6	0.3
	+20 10 9.03849	+31 31 35.6572	-2965 mas	-722 mas	69.540025	-0.975526			3	ON1			1665	11.83	0.7
	+20 10 9.10536	+31 31 34.9902	-1962 mas	-1389 mas	69.539999	-0.975826			4	ON1			1665	12.9	0.14
	+20 10 9.03869	+31 31 35.6502	-2962 mas	-729 mas	69.540024	-0.975528			5	ON1			1665	12.97	0.27
	+20 10 9.10356	+31 31 35.4992	-1989 mas	-880 mas	69.540114	-0.975744			6	ON1			1665	13.58	0.75
	+20 10 9.10543	+31 31 35.5142	-1961 mas	-865 mas	69.540122	-0.975747			7	ON1			1665	13.95	2.75
	+20 10 9.11943	+31 31 34.4642	-1751 mas	-1915 mas	69.539904	-0.975948			8	ON1			1665	14.19	0.6
	+20 10 9.11283	+31 31 34.9852	-1850 mas	-1394 mas	69.540013	-0.975849			9	ON1			1665	14.22	12.28
	+20 10 9.07709	+31 31 35.1992	-2386 mas	-1180 mas	69.539993	-0.975710			10	ON1			1665	14.29	5.77
	+20 10 9.12036	+31 31 34.4802	-1737 mas	-1899 mas	69.539910	-0.975948			11	ON1			1665	14.96	1.07
	+20 10 9.11316	+31 31 34.9832	-1845 mas	-1396 mas	69.540013	-0.975850			12	ON1			1665	14.97	18.64
	+20 10 9.12176	+31 31 35.4952	-1716 mas	-884 mas	69.540149	-0.975798			13	ON1			1665	14.98	0.57
	+20 10 9.15849	+31 31 34.8072	-1165 mas	-1572 mas	69.540060	-0.976012			14	ON1			1665	14.98	0.29
	+20 10 9.07543	+31 31 35.4862	-2411 mas	-893 mas	69.540057	-0.975662			15	ON1			1665	15.02	0.22
	+20 10 9.01569	+31 31 34.7732	-3307 mas	-1606 mas	69.539775	-0.975592			16	ON1			1665	15.04	0.2
	+20 10 9.04716	+31 31 35.7032	-2835 mas	-676 mas	69.540053	-0.975545			17	ON1			1665	15.23	0.75
	+20 10 9.09463	+31 31 34.5792	-2123 mas	-1800 mas	69.539883	-0.975856			18	ON1			1665	16.37	0.37
	+20 10 9.08729	+31 31 35.0822	-2233 mas	-1297 mas	69.539986	-0.975758			19	ON1			1665	16.37	6.63
	+20 10 9.04263	+31 31 35.6122	-2903 mas	-767 mas	69.540023	-0.975545			20	ON1			1665	11.75	0.59
	+20 10 9.04263	+31 31 35.6672	-2903 mas	-712 mas	69.540036	-0.975537			21	ON1			1665	12.83	0.46
	+20 10 9.10303	+31 31 34.9882	-1997 mas	-1391 mas	69.539994	-0.975819			22	ON1			1665	12.86	17.43
	+20 10 9.10489	+31 31 35.5282	-1969 mas	-851 mas	69.540124	-0.975743			23	ON1			1665	13.36	0.98
	+20 10 9.08509	+31 31 35.0922	-2266 mas	-1287 mas	69.539984	-0.975750			24	ON1			1665	13.63	3.47
	+20 10 9.11309	+31 31 34.9832	-1846 mas	-1396 mas	69.540013	-0.975850			25	ON1			1665	14.09	22.57
	+20 10 9.05109	+31 31 35.7022	-2776 mas	-677 mas	69.540060	-0.975557			26	ON1			1665	14.1	0.61
	+20 10 9.07696	+31 31 35.1972	-2388 mas	-1182 mas	69.539993	-0.975710			27	ON1			1665	14.19	8.51
	+20 10 9.11309	+31 31 34.9822	-1846 mas	-1397 mas	69.540013	-0.975850			28	ON1			1665	14.82	0.59
3	+20 10 9.23628	+31 31 36.3784			69.540576	-0.976006	G69.540-0.976	G69.5399-0.9757		ON1	Image	1667 MHz;	1667	13.84 .. 14.61	0.21 .. 13.52	MERLIN	0.21	20.000	0.16 x 0.14	23	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1996 Mar 1 and 2
	+20 10 9.10329	+31 31 34.9872	-1993 mas	-1392 mas	69.539995	-0.975820			1	ON1			1667	13.84	0.21
	+20 10 9.11316	+31 31 34.9832	-1845 mas	-1396 mas	69.540013	-0.975850			2	ON1			1667	14.61	13.52
	+20 10 9.10129	+31 31 34.9882	-2023 mas	-1391 mas	69.539991	-0.975814			3	ON1			1667	13.88	3.36
	+20 10 9.07796	+31 31 35.1172	-2373 mas	-1262 mas	69.539976	-0.975725			4	ON1			1667	14.18	0.39
	+20 10 9.11229	+31 31 34.9852	-1858 mas	-1394 mas	69.540012	-0.975848			5	ON1			1667	14.31	3.56
4	+20 10 9.23628	+31 31 36.3784			69.540576	-0.976006	G69.540-0.976	G69.5399-0.9757		ON1	Image	1720 MHz;	1720	13.33 .. 15.26	0.15 .. 3.04	MERLIN	0.21	20.000	0.16 x 0.14	23	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1996 Mar 1 and 2
	+20 10 9.47929	+31 31 38.2742	3647 mas	1895 mas	69.541489	-0.976442			1	ON1			1720	13.42	0.3
	+20 10 9.11309	+31 31 34.9402	-1846 mas	-1439 mas	69.540003	-0.975857			2	ON1			1720	14.7	3.04
	+20 10 9.51803	+31 31 38.4012	4228 mas	2022 mas	69.541593	-0.976538			3	ON1			1720	15.26	0.15
	+20 10 9.47963	+31 31 38.2722	3652 mas	1893 mas	69.541489	-0.976443			4	ON1			1720	13.33	0.27
	+20 10 9.11356	+31 31 34.9382	-1839 mas	-1441 mas	69.540003	-0.975858			5	ON1			1720	14.47	2.65

DSS colored	2MASS colored	WISE colored
PACS color (70-160 um)	SPIRE color (250-500 um)	GLIMPSE 360
SDSS color	IRAC color I1,I2,I4	NVSS (1.4GHz)
ATLASGAL 870 um	ATLASGAL 870 um + Planck	Bolocam 1.1 mm

select MAX(oh_data_all.ra_hms) as ra_hms,MAX(oh_data_all.dec_dms) as dec_dms,MAX(oh_data_all.source_name) as source_name,MAX(oh_data_all.ra) as ra,MAX(oh_data_all.dec) as dec,MAX(oh_data_all.l) as l,MAX(oh_data_all.b) as b,MAX(oh_data_all.grp) as grp,MAX(oh_data_all.grpv) as grpv,MAX(oh_data_all.other_name) as other_name,MAX(oh_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(oh_data_all.line) as line,MAX(oh_data_all.freq) as freq,MAX(oh_data_all.pol) as pol,MAX(oh_data_all.vrange) as vrange,MAX(oh_data_all.vpeak) as vpeak,MAX(oh_data_all.peak) as peak,MAX(oh_data_all.fwhm) as fwhm,MAX(oh_data_all.int) as int,MAX(oh_data_all.rms) as rms,MAX(oh_data_all.units) as units,MAX(oh_data_all.units_rms) as units_rms,MAX(oh_data_all.date_txt) as date_txt,MAX(oh_data_all.telescope_ref) as telescope_ref,MAX(oh_data_all.telescope_conf) as telescope_conf,MAX(oh_data_all.v_step) as v_step,MAX(oh_data_all.beam) as beam,MAX(oh_data_all.beam_maj) as beam_maj,MAX(oh_data_all.beam_min) as beam_min,MAX(oh_data_all.beam_pa) as beam_pa,MAX(oh_data_all.ref) as ref,MAX(oh_data_all.list_ref) as list_ref,MAX(oh_data_all.ascii) as ascii,MAX(oh_data_all.url) as url,MAX(oh_data_all.image) as image,MAX(oh_data_all.image2) as image2,MAX(oh_data_all.image3) as image3,MAX(oh_data_all.descr) as descr,MAX(oh_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(oh_data_all.dist) as dist,1 as dist_parallax,MAX(oh_data_all.date_txt) as date_txt,MAX(line_det) as line_det,MAX(type) as type,MAX(simbad_types_cat) as simbad_types_cat FROM oh_data_all  LEFT JOIN all_objects_withmet ON oh_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON oh_data_all.line=transitions."Line"  WHERE ref ilike 'NAM06' AND detected=true AND hide=false GROUP BY ref

select oh_data_all.ra_hms,oh_data_all.dec_dms,oh_data_all.source_name,oh_data_all.ra,oh_data_all.dec,oh_data_all.l,oh_data_all.b,oh_data_all.grp,oh_data_all.grpv,oh_data_all.other_name,oh_data_all.other_desc,oh_data_all.thermal,oh_data_all.line,oh_data_all.freq,oh_data_all.pol,oh_data_all.vrange,oh_data_all.vpeak,oh_data_all.peak,oh_data_all.fwhm,oh_data_all.int,oh_data_all.rms,oh_data_all.units,oh_data_all.units_rms,oh_data_all.date_txt,oh_data_all.telescope_ref,oh_data_all.telescope_conf,oh_data_all.v_step,oh_data_all.beam,oh_data_all.beam_maj,oh_data_all.beam_min,oh_data_all.beam_pa,oh_data_all.ref,oh_data_all.list_ref,oh_data_all.ascii,oh_data_all.url,oh_data_all.image,oh_data_all.image2,oh_data_all.image3,oh_data_all.descr,oh_data_all.id,oh_data_all.mjy_flag,oh_data_all.rms_mjy_flag,oh_data_all.dist,oh_data_all.dist_parallax,oh_data_all.date_txt,line_det,type,simbad_types_cat FROM oh_data_all   LEFT JOIN all_objects_withmet ON oh_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON oh_data_all.line=transitions."Line"  WHERE ref ilike 'NAM06' AND detected=true AND hide=false ORDER BY detected DESC,id

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NAM06 - OH masers associated with bipolar outflow in ON1

Interferometry data

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Detection table from Nammahachak et al. (2006)