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YAN14 - ALMA Observations of the IRDC Clump G34.43+00.24 MM3: 278 GHz Class I Methanol Masers

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Short title: Yanagida et al. (2014)
Authors: Yanagida, Takahiro Sakai, Takeshi Hirota, Tomoya Sakai, Nami Foster, Jonathan B. Sanhueza, Patricio Jackson, James M. Furuya, Kenji Aikawa, Yuri Yamamoto, Satoshi
Journal: The Astrophysical Journal Letters, Volume 794, Issue 1, article id. L10, 6 pp. (2014).
Bibcode:

Target type: IRDC,First_detection
Transitions: CH3OH_278(I)

Abstract
We have observed a molecular clump (MM3) associated with the infrared dark cloud G34.43+00.24 in the CH₃OH J_K = 9_-1-8₀ E, 5₀-4₀ E, and 5_-1-4_-1 E lines at sub-arcsecond resolution by using the Atacama Large Millimeter/submillimeter Array. By comparing the CH₃OH J_K = 9_-1-8₀ E emission with the CH₃OH 5₀-4₀ E and 5_-1-4_-1 E emission, we have found that the CH₃OH J_K = 9_-1-8₀ E emission is masing. We have clearly shown that the CH₃OH J_K = 9_-1-8₀ masers arise from the post shocked gas in the interacting regions between the outflows and ambient dense gas. Toward the strongest peak of the CH₃OH maser emission, SiO J = 6-5 emission is very weak. This indicates that the CH₃OH maser emission traces relatively old shocks or weak shocks. eprintid: arXiv:1409.7143	Comments: Only maser component is included

Abstract

We have observed a molecular clump (MM3) associated with the infrared dark cloud G34.43+00.24 in the CH₃OH J_K = 9_-1-8₀ E, 5₀-4₀ E, and 5_-1-4_-1 E lines at sub-arcsecond resolution by using the Atacama Large Millimeter/submillimeter Array. By comparing the CH₃OH J_K = 9_-1-8₀ E emission with the CH₃OH 5₀-4₀ E and 5_-1-4_-1 E emission, we have found that the CH₃OH J_K = 9_-1-8₀ E emission is masing. We have clearly shown that the CH₃OH J_K = 9_-1-8₀ masers arise from the post shocked gas in the interacting regions between the outflows and ambient dense gas. Toward the strongest peak of the CH₃OH maser emission, SiO J = 6-5 emission is very weak. This indicates that the CH₃OH maser emission traces relatively old shocks or weak shocks. eprintid:

Comments:
Only maser component is included

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Detection table from Yanagida et al. (2014)

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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	Telescope	V_step	Beam	PA	Detection	Class	Distance	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)						CH₃OH (class I)	(km/s)	(Jy/beam)		(km/s)	(arcsec)	(deg.)	Yes/No		(kpc)	(kpc)
1	+18 53 20	+01 28 20			34.458224	0.249657	G34.458+0.248			G34.43+00.24 MM3	Image	278 GHz (I);			ALMA	0.6	0.74 x 0.5	101.4	+H₂O +CH₃OH I -CH₃OH II	SFR_MIXED	1.560		2012 August
	+18 53 20.567	+01 28 26.37	8506.2 mas	6370.8 mas	34.460876	0.248363		1	M1	G34.43+00.24 MM3			58	835 � 18
	+18 53 20.7	+01 28 23.25	10501.2 mas	3250.8 mas	34.460357	0.247474		2	M2	G34.43+00.24 MM3			59.9	300 � 18
	+18 53 20.617	+01 28 22	9256.2 mas	2000.8 mas	34.459891	0.247624		3	M3	G34.43+00.24 MM3			59.8	335 � 18
	+18 53 20.45	+01 28 21.63	6751.2 mas	1630.8 mas	34.459482	0.248196		4	M4	G34.43+00.24 MM3			59.4	591 � 18
	+18 53 20.4	+01 28 20.63	6001.2 mas	630.8 mas	34.459140	0.248254		5	M5	G34.43+00.24 MM3			59.3	1063 � 18
	+18 53 20.033	+01 28 18	496.2 mas	-1999.2 mas	34.457793	0.249282		6	M6	G34.43+00.24 MM3			59	335 � 18
	+18 53 20.617	+01 28 25.5	9256.2 mas	5500.8 mas	34.460756	0.248067		7	hot core	G34.43+00.24 MM3			57.8	140 � 18

DSS colored	2MASS colored	WISE colored
SDSS color	IRAC color I1,I2,I4	GLIMPSE 360
PACS color (70-160 um)	SPIRE color (250-500 um)	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 'YAN14' 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 'YAN14' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

YAN14 - ALMA Observations of the IRDC Clump G34.43+00.24 MM3: 278 GHz Class I Methanol Masers

Interferometry data

View as list of objects

Detection table from Yanagida et al. (2014)