J/A+A/549/A130 YSOs in Herschel-Hi-GAL survey (Veneziani+, 2013)
An analysis of star formation with Herschel in the Hi-GAL Survey.
I. The Science Demonstration Phase Fields.
Veneziani M., Elia D., Noriega-Crespo A., Paladini R., Carey S., Faimali A.,
Molinari S., Pestalozzi M., Piacentini F., E. Schisano
<Astron. Astrophys. 549, A130 (2013)>
=2013A&A...549A.130V 2013A&A...549A.130V
ADC_Keywords: Surveys ; YSOs ; Stars, distances ; Photometry, millimetric/submm
Keywords: methods: data analysis - techniques: photometric -
techniques: image processing - submillimeter: general -
radio continuum: general
Abstract:
The Herschel survey of the Galactic plane (Hi-GAL) provides a unique
opportunity to study star formation over large areas of the sky and
different environments in the Milky Way. We use the best-studied
Hi-GAL fields to date, two 2°x2° tiles centered on
(l,b)=(30°, 0°) and (l,b)=(59°,0°), to study the star
formation activity in these regions of the sky using a large sample of
well-selected young stellar objects (YSOs).
We used the science demonstration phase Hi-GAL fields, where a
tremendous effort has been made to identify the newly formed stars and
to derive their properties as accurately as possible, e.g. distance,
bolometric luminosity, envelope mass, and stage of evolution. We
estimated the star formation rate (SFR) for these fields using the
number of candidate YSOs and their average time scale to reach the
zero age main sequence, and compared it with the rate estimated using
their integrated luminosity at 70um, combined with an extragalactic
star formation indicator.
Description:
File yso.dat contains the photometry and distances of the identified
Young Stellar Objects (YSO) in two 2x2 tiles of the Herschel-Hi-GAL
survey. The fields are centered in (l,b)=(30,0) and (l,b)=(59,0). The
detection and photometry from 24 micron to 500 micron have been
extracted with the CuTEX algorithm (Molinari et al.,
2011A&A...530A.133M 2011A&A...530A.133M) while the kinematic distances have been estimated
by Russeil et al. (2011, Cat. J/A+A/526/A151).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
yso.dat 93 285 List of detected YSOs
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See also:
J/A+A/526/A151 : Hi-Gal sources distance determination (Russeil+, 2011)
Byte-by-byte Description of file: yso.dat
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Bytes Format Units Label Explanations
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2- 17 A16 --- Name Hi-GAL source name (GLLL.llll+B.bbbb)
20- 26 F7.4 deg GLON Galactic Longitude
29- 35 F7.4 deg GLAT Galactic Latitude
40- 45 F6.2 Jy S24 ? Spitzer/MIPS 24 micron band flux
48- 53 F6.2 Jy S70 Herschel/PACS 70 micron band flux
56- 61 F6.2 Jy S160 Herschel/PACS 160 micron band flux
64- 69 F6.2 Jy S250 Herschel/SPIRE 250 micron band flux
72- 77 F6.2 Jy S350 Herschel/SPIRE 350 micron band flux
80- 85 F6.2 Jy S500 ? Herschel/SPIRE 500 micron band flux
88- 92 F5.1 kpc d [0/15] Kinematic distance
93 A1 --- --- [0]
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Acknowledgements:
Marcella Veneziani, marcella(at)ipac.caltech.edu
(End) Patricia Vannier [CDS] 25-Sep-2012