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JOH92 - The distribution of the 6(2)-6(1) and 5(2)-5(1) E-type methanol masers in OMC-1

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Short title: Johnston et al. (1992)
Authors: Johnston, K. J. Gaume, R. Stolovy, S. Wilson, T. L. Walmsley, C. M. Menten, K. M.
Journal: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 385, Jan. 20, 1992, p. 232-239.
Bibcode:

Target type: High_mass_SFR
Transitions: CH3OH_25-30_GHz(I)

Abstract
Results are presented of mapping of the 6(2)-6(1) and 5(2)-5(1) E transition of CH3OH toward the Orion-KL region with an angular resolution of 3 arcsec and a frequency resolution of 12 kHz (0.15 km/s). They are shown to lie over an area of approximately 40 arcsec, as previously shown by Matsakis et al. (1980). A detailed comparison exhibits a qualitative agreement of the intensities and sizes with the previous map. In 11 of 14 cases, the positions, flux densities, and radial velocities of the 6(2)-6(1) E and 5(2)-5(1) E maser components agree. Although individual maser emission regions are unresolved in the present 3-arcsec beam, the variation of position with velocity within what is thought to be a single feature implies clustering of masers on scales of less than 3 arcsec. The most intense feature has a brightness temperature in excess of 100,000 K. The best agreement is within the map of the 8(0)-7(1) A transition of methanol.

Abstract

Results are presented of mapping of the 6(2)-6(1) and 5(2)-5(1) E transition of CH3OH toward the Orion-KL region with an angular resolution of 3 arcsec and a frequency resolution of 12 kHz (0.15 km/s). They are shown to lie over an area of approximately 40 arcsec, as previously shown by Matsakis et al. (1980). A detailed comparison exhibits a qualitative agreement of the intensities and sizes with the previous map. In 11 of 14 cases, the positions, flux densities, and radial velocities of the 6(2)-6(1) E and 5(2)-5(1) E maser components agree. Although individual maser emission regions are unresolved in the present 3-arcsec beam, the variation of position with velocity within what is thought to be a single feature implies clustering of masers on scales of less than 3 arcsec. The most intense feature has a brightness temperature in excess of 100,000 K. The best agreement is within the map of the 8(0)-7(1) A transition of methanol.

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Detection table from Johnston et al. (1992)

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	#	Maser spot	Source name	Image	Line	V_peak	F_peak	Major	Minor	PA	Telescope	RMS	Beam	PA	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)						CH₃OH (class I)	(km/s)	(Jy)	(arcsec)	(arcsec)	(deg.)		(mJy)	(arcsec)	(deg.)	Yes/No		(kpc)
1	+05 35 13.616	-05 22 23.9948			208.9896	-19.387191	G208.993-19.385			Orion-KL	Image	25.0 GHz (I);	6.96 .. 9.9	2.8 .. 100.8				NRAOVLA	30.000	3.31 x 2.71	18	+H₂O +CH₃OH I +CH₃OH II +OH +SiO	SFR_MIXED		1988 August 20
	+05 35 14.2337	-05 22 15.5795	9266.92 mas	8415.73 mas	208.988619	-19.383848		1	1	Orion-KL			9.9	23.4	1.000
	+05 35 14.4169	-05 22 36.393	12015.4 mas	-12397.8 mas	208.994449	-19.385786		2	2	Orion-KL			9.17	2.8	1.900
	+05 35 13.6577	-05 22 25.0179	626.3 mas	-1022.66 mas	208.989952	-19.387165		3	3	Orion-KL			9.02	4.6	2.700
	+05 35 13.9018	-05 22 33.8956	4287.91 mas	-9900.44 mas	208.992769	-19.387378		4	4	Orion-KL			9.02	5.3	3.600
	+05 35 14.2194	-05 22 25.9185	9051.57 mas	-1923.35 mas	208.991306	-19.385200		5	5	Orion-KL			8.73	28.7	1.200
	+05 35 13.8692	-05 22 41.9134	3798.87 mas	-17918.2 mas	208.994809	-19.388506		6	6	Orion-KL			8.58	6.3	2.500	1.700
	+05 35 13.7204	-05 22 25.7524	1567.68 mas	-1757.21 mas	208.990269	-19.387025		7	7	Orion-KL			8.29	56.9	1.300
	+05 35 14.2104	-05 22 41.1981	8917.15 mas	-17202.9 mas	208.995300	-19.387154		8	8	Orion-KL			8	12.7	2.500	1.200	150.000
	+05 35 13.9829	-05 22 36.6315	5504.53 mas	-12636.3 mas	208.993649	-19.387421		9	9	Orion-KL			8	5.2	1.000
	+05 35 15.2379	-05 22 45.7225	24329.5 mas	-21727.3 mas	208.998533	-19.383921		10	10	Orion-KL			8	22.5	1.500
	+05 35 13.623	-05 22 24.0553	106.01 mas	-60.1375 mas	208.989630	-19.387172		11	11	Orion-KL			8	100.8	1.100
	+05 35 13.9321	-05 22 29.9078	4742.31 mas	-5912.59 mas	208.991782	-19.386764		12	12	Orion-KL			7.42	7.5	2.200	1.600	114.000
	+05 35 14.9949	-05 22 45.5949	20685.2 mas	-21599.7 mas	208.998016	-19.384804		13	13	Orion-KL			7.42	37.7	3.400	1.000	84.000
	+05 35 14.7211	-05 22 44.9751	16578.4 mas	-20979.9 mas	208.997308	-19.385739		14	14	Orion-KL			7.13	6.3	6.200	2.700	116.000
	+05 35 15.1194	-05 22 47.174	22552.5 mas	-23178.8 mas	208.998678	-19.384542		15	15	Orion-KL			6.96	7.7	1.700

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
UKIDSS K Download UKIDSS K FITS	2MASS K Download 2MASS K FITS

select MAX(met1_data_all.ra_hms) as ra_hms,MAX(met1_data_all.dec_dms) as dec_dms,MAX(met1_data_all.source_name) as source_name,MAX(met1_data_all.ra) as ra,MAX(met1_data_all.dec) as dec,MAX(met1_data_all.l) as l,MAX(met1_data_all.b) as b,MAX(met1_data_all.grp) as grp,MAX(met1_data_all.other_name) as other_name,MAX(met1_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(met1_data_all.line) as line,MAX(met1_data_all.vrange) as vrange,MAX(met1_data_all.vpeak) as vpeak,MAX(met1_data_all.peak) as peak,MAX(met1_data_all.fwhm) as fwhm,MAX(met1_data_all.int) as int,MAX(met1_data_all.rms) as rms,MAX(met1_data_all.units) as units,MAX(met1_data_all.units_rms) as units_rms,MAX(met1_data_all.date_txt) as date_txt,MAX(met1_data_all.telescope_ref) as telescope_ref,MAX(met1_data_all.telescope_conf) as telescope_conf,MAX(met1_data_all.v_step) as v_step,MAX(met1_data_all.beam) as beam,MAX(met1_data_all.beam_maj) as beam_maj,MAX(met1_data_all.beam_min) as beam_min,MAX(met1_data_all.beam_pa) as beam_pa,MAX(met1_data_all.ref) as ref,MAX(met1_data_all.list_ref) as list_ref,MAX(met1_data_all.ascii) as ascii,MAX(met1_data_all.url) as url,MAX(met1_data_all.image) as image,MAX(met1_data_all.image2) as image2,MAX(met1_data_all.image3) as image3,MAX(met1_data_all.descr) as descr,MAX(met1_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(met1_data_all.dist) as dist,1 as dist_parallax,MAX(met1_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 met1_data_all  LEFT JOIN all_objects_withmet ON met1_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 met1_data_all.line=transitions."Line"  WHERE ref ilike 'JOH92' AND detected=true AND hide=false GROUP BY ref

select met1_data_all.ra_hms,met1_data_all.dec_dms,met1_data_all.source_name,met1_data_all.ra,met1_data_all.dec,met1_data_all.l,met1_data_all.b,met1_data_all.grp,met1_data_all.other_name,met1_data_all.other_desc,met1_data_all.thermal,met1_data_all.line,met1_data_all.vrange,met1_data_all.vpeak,met1_data_all.peak,met1_data_all.fwhm,met1_data_all.int,met1_data_all.rms,met1_data_all.units,met1_data_all.units_rms,met1_data_all.date_txt,met1_data_all.telescope_ref,met1_data_all.telescope_conf,met1_data_all.v_step,met1_data_all.beam,met1_data_all.beam_maj,met1_data_all.beam_min,met1_data_all.beam_pa,met1_data_all.ref,met1_data_all.list_ref,met1_data_all.ascii,met1_data_all.url,met1_data_all.image,met1_data_all.image2,met1_data_all.image3,met1_data_all.descr,met1_data_all.id,met1_data_all.mjy_flag,met1_data_all.rms_mjy_flag,met1_data_all.dist,met1_data_all.dist_parallax,met1_data_all.date_txt,line_det,type,simbad_types_cat FROM met1_data_all   LEFT JOIN all_objects_withmet ON met1_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 met1_data_all.line=transitions."Line"  WHERE ref ilike 'JOH92' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

JOH92 - The distribution of the 6(2)-6(1) and 5(2)-5(1) E-type methanol masers in OMC-1

Interferometry data

View as list of objects

Detection table from Johnston et al. (1992)