J/A+A/507/795 The RMS survey: water masers of YSOs (Urquhart+, 2009)
The RMS Survey. H2O masers towards a sample of southern hemisphere massive YSO
candidates and ultra compact HII regions.
Urquhart J.S., Hoare M.G., Lumsden S.L., Oudmaijer R.D., Moore T.J.T.,
Brook P.R., Mottram J.C., Davies B., Stead J.J.
<Astron. Astrophys. 507, 795 (2009)>
=2009A&A...507..795U 2009A&A...507..795U
ADC_Keywords: YSOs ; Radio sources ; Infrared sources ; Spectroscopy
Keywords: stars: formation - stars: early-type - stars: pre-main sequence
Abstract:
The red MSX source (RMS) survey has identified a large sample of
candidate massive young stellar objects (MYSOs) and ultra compact (UC)
HII regions from a sample of ∼2000 MSX and 2MASS colour selected
sources.
To search for H2O masers towards a large sample of young high mass
stars and to investigate the statistical correlation of H2O masers
with the earliest stages of massive star formation.
We have used the Mopra Radio telescope to make position-switched
observations towards ∼500 UCHII regions and MYSOs candidates
identified from the RMS survey and located between 190°<l<30°.
These observations have a 4σ sensitivity of ∼1Jy and a velocity
resolution of ∼0.4km/s.
Description:
Results of a set of water maser observations towards an MSX and 2MASS
colour selected sample of massive young stellar object candidates.
Table 1: Field names, positions, observational rms values;
Table 2: detected water maser sources their parameters and
classification of associated MSX point sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 35 499 Field names, positions, observational rms values
table2.dat 80 161 Detected water maser sources their parameters and
classification of associated MSX point sources
fig2/* . 322 Individual H2O spectra (in PS and PNG formats)
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See also:
V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/A+AS/115/285 : Catalogue of massive young stellar objects (Chan+, 1996)
J/AJ/130/586 : Compact radio sources in the galactic plane (White+, 2005)
J/A+A/461/11 : Radio observations of MYSO candidates (Urquhart+, 2007)
J/A+A/474/891 : 13CO observations of YSOs in South Gal. plane (Urquhart+ 2007)
J/A+A/487/253 : The RMS survey: 13CO observations of YSOs (Urquhart+ 2008)
J/A+A/501/539 : RMS survey. 6cm observations of YSOs (Urquhart+, 2009)
http://www.ast.leeds.ac.uk/RMS : RMS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Field Field name (GLLL.llll+BB.b)
16- 23 F8.4 deg RAdeg Right ascension (J2000) pointing centre
25- 32 F8.4 deg DEdeg Declination (J2000) pointing centre
34- 35 I2 mK rms Image rms
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Maser Maser name (GLLL.llll+BB.bbbb_N)
21- 28 F8.4 deg RAdeg Right ascension (J2000) radio source
30- 37 F8.4 deg DEdeg Declination (J2000) radio source
39- 44 F6.1 Jy Fpeak Peak maser flux (22.235GHz)
46- 51 F6.1 km/s VLSR VLSR of peak flux
53- 58 F6.1 km/s Vmin VLSR of first maser component
60- 65 F6.1 km/s Vmax VLSR of last maser component
67- 80 A14 --- Type RMS survey classification
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Acknowledgements:
James Urquhart, james.urquhart(at)csiro.au
History:
* 28-Sep-2009: original version (161 sources in table2)
* 10-Jan-2010: Duplicated source G025.4018+00.0198 in table2 removed
and the missing source G330.7223+00.1779 was added
(communication between Francois Ochsenbein and James Urquhart)
(End) Patricia Vannier [CDS] 28-Sep-2009