J/A+A/565/A75 ATLASGAL: dust condensations in Galactic plane (Csengeri+, 2014)
The ATLASGAL survey: a catalog of dust condensations in the Galactic plane.
Csengeri T., Urquhart J.S., Schuller F., Motte F., Bontemps S., Wyrowski F.,
Menten K.M., Bronfman L., Beuther H., Henning T., Testi L., Zavagno A.,
Walmsley M.
<Astron. Astrophys. 565, A75 (2014)>
=2014A&A...565A..75C 2014A&A...565A..75C
ADC_Keywords: Galactic plane ; Surveys ; Millimetric/submm sources ;
Radio sources
Keywords: surveys - star formation - massive stars - ISM: structure -
Galaxy: structure
Abstract:
The formation processes and the evolutionary stages of high-mass stars
are poorly understood compared to low-mass stars. Large-scale surveys
are needed to provide an unbiased census of high column density sites
which can potentially host precursors to high-mass stars.
The ATLASGAL survey covers 420 sq. degree of the Galactic plane,
between -80°<l<+60° at 870um. Here we identify the population
of embedded sources throughout the inner Galaxy. With this catalog we
first investigate the general statistical properties of dust
condensations in terms of their observed parameters, such as flux
density and angular size. Then using mid-IR surveys we aim to
investigate their star-formation activity and the Galactic
distribution of star-forming and quiescent clumps. Our ultimate goal
is to determine the statistical properties of quiescent and
star-forming clumps within the Galaxy and to constrain the
star-formation processes.
We optimized the source extraction method, referred to as MRE-GCL, for
the ATLASGAL maps in order to generate a catalog of compact sources.
This technique is based on a multi-scale filtering to remove extended
emission from clouds to better determine the parameters corresponding
to the embedded compact sources. In a second step we extract the
sources by fitting 2D Gaussians with the Gaussclumps algorithm.
Description:
The file table1.dat contains the ATLASGAL sources, altogether 10861
detections.
For more details see the corresponding section of the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 75 10861 List of ATLASGAL sources
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See also:
VIII/20 : Catalog of 5 GHz Galactic Plane Sources (Haynes+ 1979)
V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003)
J/A+A/549/A45 : ATLASGAL Compact Source Catalog: 330<l<21 (Contreras+, 2013)
J/MNRAS/435/400 : ATLASGAL. Properties of compact HII regions (Urquhart+, 2013)
http://atlasgal.mpifr-bonn.mpg.de/ : ATLASGAL Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq [1/10861] Sequential number of the source
7- 22 A16 --- Name Name of the source (GLLL.llll+B.bbbb)
24- 31 F8.4 deg RAdeg Right ascension (J2000)
33- 40 F8.4 deg DEdeg Declination (J2000)
42- 44 I3 arcsec amaj Beam convolved major axis of the fitted Gaussian
46- 47 I2 arcsec amin Beam convolved minor axis of the fitted Gaussian
49- 51 I3 deg PA [-90/180] Position angle of the fitted Gaussian
measured from north to east
53- 54 I2 arcsec FWHM Beam convolved average FWHM source size
56- 61 F6.2 Jy Sp Peak flux at 870um (in Jy/beam)
63- 68 F6.2 Jy Sint Integrated flux at 870um (1)
70- 75 F6.2 --- S/N Signal-to-noise ratio determined from the weight
maps
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Note (1): calculated assuming a 2D-Gaussian shape for the sources.
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Acknowledgements:
Timea Csengeri, ctimea(at)mpifr-bonn.mpg.de
(End) Patricia Vannier [CDS] 06-May-2014