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KRA95 - Shock-excited NH 3 (3,3) Masers in the NGC 6334 Star-forming Region

Short title: Kraemer & Jackson (1995)
Authors: Kraemer, Kathleen E.Jackson, James M.
Journal: Astrophysical Journal Letters v.439, p.L9
Bibcode:

Target type: High_mass_SFR
Transitions: NH3_(3,3)

Abstract
We report the discovery of four NH3 (3, 3) masers in the NGC 6334 star formation region. The masers are found in two of the seven far-infrared continuum sources where high-mass star formation is taking place in this molecular cloud. These masers occur at the ends of high-velocity molecular outflows no maser emission was found near regions without high-velocity outflows. The NH3 masers are not associated with any other type of maser. These results confirm that the NH3 (3, 3) masers are caused by shocks and probably mark the location where the molecular outflow jet impinges upon the ambient medium.

Abstract

We report the discovery of four NH3 (3, 3) masers in the NGC 6334 star formation region. The masers are found in two of the seven far-infrared continuum sources where high-mass star formation is taking place in this molecular cloud. These masers occur at the ends of high-velocity molecular outflows no maser emission was found near regions without high-velocity outflows. The NH3 masers are not associated with any other type of maser. These results confirm that the NH3 (3, 3) masers are caused by shocks and probably mark the location where the molecular outflow jet impinges upon the ambient medium.

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Detection table from Kraemer & Jackson (1995)

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Image	Descr.	Line	V_peak	FWHM	F_peak	Telescope	Configuration	V_step	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)					NH₃	(km/s)	(km/s)	(mJy)			(km/s)	(arcsec)	Yes/No		(kpc)
1	17 20 53.2	-35 47 2.5	351.4163	0.6454	G351.417+0.645	I ()	Image	Descr	(3,3);	8.7 (0.4)	6.20.9	267	NRAOVLA	C/D	2.45	6.2 x 4.1	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		1993 October 15-16
2	17 20 52.2	-35 47 15.6	351.4112	0.6464	G351.417+0.645	I (SW)			(3,3);	7.3 (0.2)	3.80.3	333	NRAOVLA	C/D	2.45	1.3	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		1993 October 15-16
3	17 20 55.7	-35 47 10.8	351.4191	0.6374	G351.417+0.645	I (SE)			(3,3);	5.8 (0.1)	4.10.2	238	NRAOVLA	C/D	2.45	1.3	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		1993 October 15-16
4	17 20 55.1	-35 46 44.8	351.4240	0.6429	G351.417+0.645	I (NE)			(3,3);	6.4 (0.2)	3.30.4	482	NRAOVLA	C/D	2.45	1.8	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		1993 October 15-16
5	17 19 57.6	-36 05 31.5	351.0563	0.6234	G351.056+0.623	V (E)	Image	Descr	(3,3);	6.5 (1.0)	6.01.0	71	NRAOVLA	C/D	2.45	7.3 x 4.6				1993 October 15-16
6	17 19 55.1	-35 57 36.7	351.1596	0.7058	G351.161+0.697	V (W)			(3,3);	7.7 (0.2)	2.60.5	114	NRAOVLA	C/D	2.45	5.1 x 3.3	+H₂O +OH	SFR_MIXED		1993 October 15-16

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(nh3_data_all.ra_hms) as ra_hms,MAX(nh3_data_all.dec_dms) as dec_dms,MAX(nh3_data_all.source_name) as source_name,MAX(nh3_data_all.ra) as ra,MAX(nh3_data_all.dec) as dec,MAX(nh3_data_all.l) as l,MAX(nh3_data_all.b) as b,MAX(nh3_data_all.grp) as grp,MAX(nh3_data_all.other_name) as other_name,MAX(nh3_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(nh3_data_all.line) as line,MAX(nh3_data_all.vrange) as vrange,MAX(nh3_data_all.vpeak) as vpeak,MAX(nh3_data_all.peak) as peak,MAX(nh3_data_all.fwhm) as fwhm,MAX(nh3_data_all.int) as int,MAX(nh3_data_all.rms) as rms,MAX(nh3_data_all.units) as units,MAX(nh3_data_all.units_rms) as units_rms,MAX(nh3_data_all.date_txt) as date_txt,MAX(nh3_data_all.telescope_ref) as telescope_ref,MAX(nh3_data_all.telescope_conf) as telescope_conf,MAX(nh3_data_all.v_step) as v_step,MAX(nh3_data_all.beam) as beam,MAX(nh3_data_all.beam_maj) as beam_maj,MAX(nh3_data_all.beam_min) as beam_min,MAX(nh3_data_all.beam_pa) as beam_pa,MAX(nh3_data_all.ref) as ref,MAX(nh3_data_all.list_ref) as list_ref,MAX(nh3_data_all.ascii) as ascii,MAX(nh3_data_all.url) as url,MAX(nh3_data_all.image) as image,MAX(nh3_data_all.image2) as image2,MAX(nh3_data_all.image3) as image3,MAX(nh3_data_all.descr) as descr,MAX(nh3_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(nh3_data_all.dist) as dist,1 as dist_parallax,MAX(nh3_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 nh3_data_all  LEFT JOIN all_objects_withmet ON nh3_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 nh3_data_all.line=transitions."Line"  WHERE ref ilike 'KRA95' AND detected=true AND hide=false GROUP BY ref

select nh3_data_all.ra_hms,nh3_data_all.dec_dms,nh3_data_all.source_name,nh3_data_all.ra,nh3_data_all.dec,nh3_data_all.l,nh3_data_all.b,nh3_data_all.grp,nh3_data_all.other_name,nh3_data_all.other_desc,nh3_data_all.thermal,nh3_data_all.line,nh3_data_all.vrange,nh3_data_all.vpeak,nh3_data_all.peak,nh3_data_all.fwhm,nh3_data_all.int,nh3_data_all.rms,nh3_data_all.units,nh3_data_all.units_rms,nh3_data_all.date_txt,nh3_data_all.telescope_ref,nh3_data_all.telescope_conf,nh3_data_all.v_step,nh3_data_all.beam,nh3_data_all.beam_maj,nh3_data_all.beam_min,nh3_data_all.beam_pa,nh3_data_all.ref,nh3_data_all.list_ref,nh3_data_all.ascii,nh3_data_all.url,nh3_data_all.image,nh3_data_all.image2,nh3_data_all.image3,nh3_data_all.descr,nh3_data_all.id,nh3_data_all.mjy_flag,nh3_data_all.rms_mjy_flag,nh3_data_all.dist,nh3_data_all.dist_parallax,nh3_data_all.date_txt,line_det,type,simbad_types_cat FROM nh3_data_all   LEFT JOIN all_objects_withmet ON nh3_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 nh3_data_all.line=transitions."Line"  WHERE ref ilike 'KRA95' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

KRA95 - Shock-excited NH 3 (3,3) Masers in the NGC 6334 Star-forming Region

View as list of objects

Detection table from Kraemer & Jackson (1995)