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FOR90 - Two wide-velocity H2O masers.

Short title: Forster (1990)
Authors: Forster, J. R.
Journal: Astronomy and Astrophysics, Vol. 227, p. L37-L39 (1990)
Bibcode:

Target type: High_mass_SFR
Transitions: H2O_22

Abstract
VLA observations are presented for two H2O maser sources with wide (greater than 50 km/s) velocity spread. In 351.78-0.54 the H2O masers form a ring, while in 0.54-0.85 they are located on a line. In both sources, maser spots with velocities near that of the ambient gas are spread over 3-4 in., while the red- and blue-shifted masers are more tightly grouped. The distribution and kinematics of the H2O masers in these sources suggest the presence of a disk or ring of material surrounding a massive young star in an early evolutionary phase.

Abstract

VLA observations are presented for two H2O maser sources with wide (greater than 50 km/s) velocity spread. In 351.78-0.54 the H2O masers form a ring, while in 0.54-0.85 they are located on a line. In both sources, maser spots with velocities near that of the ambient gas are spread over 3-4 in., while the red- and blue-shifted masers are more tightly grouped. The distribution and kinematics of the H2O masers in these sources suggest the presence of a disk or ring of material surrounding a massive young star in an early evolutionary phase.

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Image	Line	V_range	Telescope	Configuration	V_step	RMS	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)				H₂O	(km/s)			(km/s)	(Jy/beam)	(arcsec)	Yes/No		(kpc)
1	17 26 42.3	-36 09 16.4	351.7744	-0.5356	G351.775-0.536	351.78-0.54	Image	22 GHz;	-38;22	NRAOVLA	A-array	1.32	0.200	0.2	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1986 June 6
2	17 50 14.5	-28 54 29.1	0.5467	-0.8511	G0.5464-0.8511	0.54-0.85	Image	22 GHz;	-22;62	NRAOVLA	A-array	0.33	0.200	0.2	+H₂O	SFR		1986 June 6

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 'FOR90' 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 'FOR90' AND detected=true AND hide=false ORDER BY detected DESC,id

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FOR90 - Two wide-velocity H2O masers.

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Detection table from Forster (1990)