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VAL08 - High-Resolution H₂O Maser Observations toward IRAS Sources in Bright-Rimmed Clouds

Interferometry data

Short title: Valdettaro et al. (2008)
Authors: Valdettaro, R.Migenes, V.Trinidad, M. A.Brand, J.Palla, F.
Journal: The Astrophysical Journal, Volume 675, Issue 2, pp. 1352-1360 (2008).
Bibcode:

Target type: BRC
Transitions: H2O_22

Abstract

Bright-rimmed clouds (BRCs) are clouds that have been compressed by an external ionization shock front. We present the first high-resolution VLA observations of 20 of these BRCs in the northern hemisphere. We detected water maser emission from three objects: IRAS 21346+5714 (BRC 36), IRAS 21388+5622 (BRC 37), and IRAS 21445+5712 (BRC 39). The low detection rate supports the evidence that BRCs produce mostly low-luminosity objects, for which maser emission is weak and episodic, and suggests that the embedded sources are in a more advanced evolutionary phase than Class 0 objects.

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Detection table from Valdettaro et al. (2008)

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	#	Source name	Other name	Image	Descr.	Line	V_peak	F_peak	Telescope	Configuration	V_step	RMS	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)				IRAS Source			H₂O	(km/s)	(Jy)			(km/s)	(mJy/beam)	(arcsec)	Yes/No		(kpc)
1	+21 36 12.3981	+57 27 34.2235			98.994449	3.963476	G98.987+3.962		BRC 36	21346+5714	Image	Descr	22 GHz;	-10.3 .. -4.7	0.33 .. 73.4	NRAOVLA	B	0.33	270.000	0.54 x 0.3	+H₂O -CH₃OH I -CH₃OH II	SFR		2005 Feb 20-28
	+21 36 7.88	+57 26 43.4	-67772.4 mas	-50825.2 mas	98.977424	3.959813		1	BRC 36					-10.3	73.4
	+21 36 7.88	+57 26 43.4	-67772.4 mas	-50825.2 mas	98.977424	3.959813		2	BRC 36					-7.4	0.99
	+21 36 7.88	+57 26 43.4	-67772.4 mas	-50825.2 mas	98.977424	3.959813		3	BRC 36					-4.7	0.33
2	+21 40 29.0061	+56 35 58.0373			98.856232	2.934318	G98.856+2.934		BRC 37	21388+5622	Image	Descr	22 GHz;	-3	0.43	NRAOVLA	B	0.33	25.000	0.54 x 0.3	+H₂O -OH	SFR_MIXED		2005 Feb 20-28
	+21 40 28.11	+56 36 2.2	-13442.4 mas	4162 mas	98.855449	2.936543		1	BRC 37					-3	0.43
3	+21 46 6.8329	+57 26 22.9273			99.986584	3.071577	G99.987+3.072		BRC 39	21445+5712	Image	Descr	22 GHz;	-6.1	0.09	NRAOVLA	B	0.33	9.100	0.54 x 0.3	+H₂O -CH₃OH II	SFR		2005 Feb 20-28
	+21 46 7.14	+57 26 30.9	4608 mas	7972.8 mas	99.988541	3.072826		1	BRC 39					-6.1	0.09

Non-detection table from Valdettaro et al. (2008)

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Other name	Descr.	Line	Telescope	Configuration	V_step	RMS	Beam	Detection	Class	Date
	(J2000)	(J2000)	(deg.)	(deg.)			IRAS Source		H₂O			(km/s)	(mJy/beam)	(arcsec)	Yes/No
1	+23 59 25.7928	+67 23 38.9318	117.951464	5.026678	G117.951+5.027	BRC 1	23568+6706	Descr	22 GHz;	NRAOVLA	B	0.33	7.100	0.54 x 0.3	-H₂O -CH₃OH II	SFR	2005 Feb 20-28
2	+00 03 58.7507	+68 34 40.8911	118.600763	6.10629	G118.601+6.106	BRC 2	00013+6817		22 GHz;	NRAOVLA	B	0.33	10.100	0.54 x 0.3	-H₂O -CH₃OH II	SFR_MIXED	2005 Feb 20-28
3	+02 29 1.76958	+61 33 32.4556	134.278794	0.856125	G134.279+0.856	BRC 5	02252+6120	Descr	22 GHz;	NRAOVLA	B	0.33	11.200	0.54 x 0.3	+H₂O -CH₃OH I +CH₃OH II	SFR_MIXED	2005 Feb 20-28
4	+02 34 45.0572	+60 47 48.232	135.205241	0.410827	G135.205+0.411	BRC 6	02309+6034		22 GHz;	NRAOVLA	B	0.33	11.000	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
5	+02 34 52.1481	+61 46 46.9792	134.836878	1.322311	G134.837+1.322	BRC 7	02310+6133		22 GHz;	NRAOVLA	B	0.33	10.900	0.54 x 0.3	+H₂O -CH₃OH I	SFR	2005 Feb 20-28
6	+02 36 27.1896	+61 23 36.6624	135.161383	1.040538	G135.161+1.041	BRC 9	02326+6110		22 GHz;	NRAOVLA	B	0.33	11.500	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
7	+02 55 2.97299	+60 35 44.5006	137.540668	1.278758	G137.541+1.279	BRC 12	02511+6023	Descr	22 GHz;	NRAOVLA	B	0.33	10.100	0.54 x 0.3	-H₂O	SFR_MIXED	2005 Feb 20-28
8	+05 31 28.1068	+12 05 23.5248	192.690335	-11.655678	G192.690-11.656	BRC 17	05286+1203		22 GHz;	NRAOVLA	B	0.33	5.400	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
9	+05 44 29.7571	+09 08 53.7411	196.930582	-10.399989	G196.931-10.400	BRC 18	05417+0907	Descr	22 GHz;	NRAOVLA	B	0.33	4.700	0.54 x 0.3	+H₂O -CH₃OH I -CH₃OH II	SFR	2005 Feb 20-28
10	+05 38 4.88859	-01 45 8.76045	205.950169	-17.087976	G205.950-17.088	BRC 20	05355-0146		22 GHz;	NRAOVLA	B	0.33	5.600	0.54 x 0.3	-H₂O -CH₃OH I -CH₃OH II	SFR	2005 Feb 20-28
11	+06 34 55.3712	+04 25 13.6167	207.113853	-1.647026	G207.114-1.647	BRC 24	06322+0427		22 GHz;	NRAOVLA	B	0.33	5.600	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
12	+06 41 3.26829	+10 15 1.38856	202.629151	2.377162	G202.629+2.377	BRC 25	06382+1017		22 GHz;	NRAOVLA	B	0.33	5.500	0.54 x 0.3	+H₂O -CH₃OH I -CH₃OH II	SFR_MIXED	2005 Feb 20-28
13	+07 03 47.1834	-11 45 47.4188	224.802286	-2.638652	G224.802-2.639	BRC 26	07014-1141		22 GHz;	NRAOVLA	B	0.33	5.900	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
14	+21 32 23.7453	+57 24 8.31451	98.576909	4.268198	G98.577+4.268	BRC 32	21308+5710		22 GHz;	NRAOVLA	B	0.33	15.600	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
15	+21 33 12.2211	+57 29 34.4377	98.718586	4.26067	G98.719+4.261	BRC 33	21316+5716		22 GHz;	NRAOVLA	B	0.33	16.500	0.54 x 0.3	-H₂O	SFR	2005 Feb 20-28
16	+21 33 32.3684	+58 03 28.344	99.136312	4.645062	G99.136+4.645	BRC 34	21320+5750		22 GHz;	NRAOVLA	B	0.33	5.700	0.54 x 0.3	-H₂O -CH₃OH II	SFR	2005 Feb 20-28
17	+21 46 14.7179	+57 08 59.2326	99.813092	2.838453	G99.813+2.838	BRC 40	21446+5655		22 GHz;	NRAOVLA	B	0.33	22.100	0.54 x 0.3	-H₂O	SFR_MIXED	2005 Feb 20-28

X

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(h2o_data_all.ra_hms) as ra_hms,MAX(h2o_data_all.dec_dms) as dec_dms,MAX(h2o_data_all.source_name) as source_name,MAX(h2o_data_all.ra) as ra,MAX(h2o_data_all.dec) as dec,MAX(h2o_data_all.l) as l,MAX(h2o_data_all.b) as b,MAX(h2o_data_all.grp) as grp,MAX(h2o_data_all.other_name) as other_name,MAX(h2o_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(h2o_data_all.line) as line,MAX(h2o_data_all.vrange) as vrange,MAX(h2o_data_all.vpeak) as vpeak,MAX(h2o_data_all.peak) as peak,MAX(h2o_data_all.fwhm) as fwhm,MAX(h2o_data_all.int) as int,MAX(h2o_data_all.rms) as rms,MAX(h2o_data_all.units) as units,MAX(h2o_data_all.units_rms) as units_rms,MAX(h2o_data_all.date_txt) as date_txt,MAX(h2o_data_all.telescope_ref) as telescope_ref,MAX(h2o_data_all.telescope_conf) as telescope_conf,MAX(h2o_data_all.v_step) as v_step,MAX(h2o_data_all.beam) as beam,MAX(h2o_data_all.beam_maj) as beam_maj,MAX(h2o_data_all.beam_min) as beam_min,MAX(h2o_data_all.beam_pa) as beam_pa,MAX(h2o_data_all.ref) as ref,MAX(h2o_data_all.list_ref) as list_ref,MAX(h2o_data_all.ascii) as ascii,MAX(h2o_data_all.url) as url,MAX(h2o_data_all.image) as image,MAX(h2o_data_all.image2) as image2,MAX(h2o_data_all.image3) as image3,MAX(h2o_data_all.descr) as descr,MAX(h2o_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(h2o_data_all.dist) as dist,1 as dist_parallax,MAX(h2o_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 h2o_data_all  LEFT JOIN all_objects_withmet ON h2o_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 h2o_data_all.line=transitions."Line"  WHERE ref ilike 'VAL08' AND detected=true AND hide=false GROUP BY ref

select h2o_data_all.ra_hms,h2o_data_all.dec_dms,h2o_data_all.source_name,h2o_data_all.ra,h2o_data_all.dec,h2o_data_all.l,h2o_data_all.b,h2o_data_all.grp,h2o_data_all.other_name,h2o_data_all.other_desc,h2o_data_all.thermal,h2o_data_all.line,h2o_data_all.vrange,h2o_data_all.vpeak,h2o_data_all.peak,h2o_data_all.fwhm,h2o_data_all.int,h2o_data_all.rms,h2o_data_all.units,h2o_data_all.units_rms,h2o_data_all.date_txt,h2o_data_all.telescope_ref,h2o_data_all.telescope_conf,h2o_data_all.v_step,h2o_data_all.beam,h2o_data_all.beam_maj,h2o_data_all.beam_min,h2o_data_all.beam_pa,h2o_data_all.ref,h2o_data_all.list_ref,h2o_data_all.ascii,h2o_data_all.url,h2o_data_all.image,h2o_data_all.image2,h2o_data_all.image3,h2o_data_all.descr,h2o_data_all.id,h2o_data_all.mjy_flag,h2o_data_all.rms_mjy_flag,h2o_data_all.dist,h2o_data_all.dist_parallax,h2o_data_all.date_txt,line_det,type,simbad_types_cat FROM h2o_data_all   LEFT JOIN all_objects_withmet ON h2o_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 h2o_data_all.line=transitions."Line"  WHERE ref ilike 'VAL08' AND detected=true AND hide=false ORDER BY detected DESC,id