J/ApJS/205/1 CORNISH project. II. Source catalog (Purcell+, 2013)
The CoOrdinated Radio and Infrared Survey for High-mass star formation.
II. Source catalog.
Purcell C.R., Hoare M.G., Cotton W.D., Lumsden S.L., Urquhart J.S.,
Chandler C., Churchwell E.B., Diamond P., Dougherty S.M., Fender R.P.,
Fuller G., Garrington S.T., Gledhill T.M., Goldsmith P.F., Hindson L.,
Jackson J.M., Kurtz S.E., Marti J., Moore T.J.T., Mundy L.G.,
Muxlow T.W.B., Oudmaijer R.D., Pandian J.D., Paredes J.M., Shepherd D.S.,
Smethurst S., Spencer R.E., Thompson M.A., Umana G., Zijlstra A.A.
<Astrophys. J. Suppl. Ser., 205, 1 (2013)>
=2013ApJS..205....1P 2013ApJS..205....1P
ADC_Keywords: Radio sources ; Surveys ; Radio continuum
Keywords: catalogs - H II regions - radio continuum: general -
radio continuum: ISM - surveys - techniques: image processing
Abstract:
The CORNISH (Co-Ordinated Radio 'N' Infrared Survey for High-mass star
formation) project is the highest resolution radio continuum survey of
the Galactic plane to date. It is the 5GHz radio continuum part of a
series of multi-wavelength surveys that focus on the northern GLIMPSE
region (10°<l<65°), observed by the Spitzer satellite in the
mid-infrared. Observations with the Very Large Array in B and BnA
configurations have yielded a 1.5" resolution Stokes I map with a root
mean square noise level better than 0.4mJy/beam. Here we describe the
data-processing methods and data characteristics, and present a new,
uniform catalog of compact radio emission. This includes an
implementation of automatic deconvolution that provides much more
reliable imaging than standard CLEANing. A rigorous investigation of
the noise characteristics and reliability of source detection has been
carried out. We show that the survey is optimized to detect emission
on size scales up to 14" and for unresolved sources the catalog is
more than 90% complete at a flux density of 3.9mJy. We have detected
3062 sources above a 7σ detection limit and present their
ensemble properties. The catalog is highly reliable away from regions
containing poorly sampled extended emission, which comprise less than
2% of the survey area. Imaging problems have been mitigated by
down-weighting the shortest spacings and potential artifacts flagged
via a rigorous manual inspection with reference to the Spitzer
infrared data. We present images of the most common source types
found: HII regions, planetary nebulae, and radio galaxies.
Description:
CORNISH covers the 110deg2 of the northern GLIMPSE region
(10°<l<65°, |b|<1°) using the VLA in B and BnA
configurations at 5GHz. The combination of array configuration and
observing frequency results in a ∼1.5" synthesized beam within a 8.9'
field of view, corresponding to the FWHM primary beam. CORNISH
observations of the northern GLIMPSE region were conducted using the
VLA during the 2006 and 2007/2008 observing seasons. Four epochs are
defined as follows:
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Epoch Dates Notes
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I 2006 Jul 12 -> 2006 Sep 16 VLA antennas only, storms
II 2007 Sep 28 -> 2007 Oct 6 VLA + EVLA antennas, low Decl.
IIIa 2007 Oct 27 -> 2008 Feb 4 Dec. Range: -14.9° -10.5°
Range: 16.1° -> 21.1°
IIIb 2007 Oct 27 -> 2008 Feb 4 Dec. Range: +14.2° +29.1°
Range: 48.9° -> 65.5°
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 388 2637 High reliability CORNISH catalogue (σ≥7);
without artefacts
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See also:
II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)
VIII/90 : The FIRST Survey Catalog, Version 12Feb16 (Becker+ 2012)
II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
J/A+A/615/A103 : CORNISH project. III. UCHII region catalogue (Kalcheva+, 2018)
J/MNRAS/480/2423 : CORNISH project IV. Radio-selected galactic PN
(Irabor+, 2018)
J/A+A/537/A1 : Infrared fluxes of HII regions and PNe (Anderson+, 2012)
J/AJ/142/35 : The VLBA Galactic Plane Survey (VGaPS) (Petrov+, 2011)
J/MNRAS/410/1237 : Red MSX survey (RMS) massive young stars (Urquhart+, 2011)
J/AJ/140/462 : Intermediate-mass star-forming regions (Arvidsson+, 2010)
J/ApJ/713/871 : Sources in star-forming region Cyg-OB2 (Wright+, 2010)
J/A+A/501/539 : RMS survey. 6cm observations of YSOs (Urquhart+, 2009)
J/AJ/134/2099 : Variability of point sources in infrared (Robitaille+, 2007)
J/A+A/461/11 : Radio observations of MYSO candidates (Urquhart+, 2007)
J/AJ/131/1262 : Polarization images at 15GHz of AGN jets (Homan+, 2006)
J/AJ/131/2525 : MAGPIS 20cm survey (Helfand+, 2006)
J/AJ/129/348 : Radio compact HII regions in the Milky Way (Giveon+, 2005)
J/AJ/130/586 : Compact radio sources in the galactic plane (White+, 2005)
J/ApJS/91/347 : A 5-GHz VLA Survey of the Galactic Plane (Becker+ 1994)
J/ApJS/91/659 : Ultracompact HII regions radio images (Kurtz+ 1994)
J/AJ/96/1655 : Galactic plane VLA survey (Garwood+ 1988)
J/A+AS/35/23 : Survey of the Galactic Plane at 4.875 GHz (Altenhoff+ 1979)
http://cornish.leeds.ac.uk/ : CORNISH home page
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Unique name from Galactic coordinates
(GLLL.llll+BB.bbbb)
20- 27 F8.5 deg GLON [9.97016/65.54342] Galactic longitude
30- 37 F8.5 deg GLAT [-1.17115/1.1753] Galactic latitude
39- 47 F9.5 deg RAdeg Right Ascension (J2000)
49- 57 F9.5 deg DEdeg Declination (J2000)
60- 63 F4.2 arcsec e_RAdeg [0.1/3.21] Uncertainty in Right Ascension
69- 72 F4.2 arcsec e_DEdeg [0.1/3.32] Uncertainty in Declination
79- 85 F7.2 mJy Speak 5GHz peak of Gaussian fit or peak pixel
(in units of mJy/beam)
91- 96 F6.2 mJy e_Speak Uncertainty in Speak (mJy/beam)
101-108 F8.2 mJy Sint [1.29/12617] 5GHz integrated flux density
111-117 F7.2 mJy e_Sint [0.36/1121] Uncertainty in Sint
120-125 F6.3 arcsec ASc Angular scale (geometric average) (1)
135-139 F5.3 arcsec e_ASc Uncertainty in angular scale
149-152 F4.1 arcsec AScD ? Deconvolved angular scale (for >1.8" only)
169-173 F5.3 arcsec gMaj [1.5/9.7]? Major axis of Gaussian fit
185-189 F5.3 arcsec e_gMaj ? Uncertainty in major axis of Gaussian fit
202-206 F5.3 arcsec gMin [1.5/8.098]? Minor axis of Gaussian fit
218-222 F5.3 arcsec e_gMin ? Uncertainty in minor axis of Gaussian fit
234-240 F7.3 deg gPA ? Position angle of Gaussian fit
252-257 F6.3 deg e_gPA ? Uncertainty in position angle
272-275 F4.2 mJy RMS Root-mean-square noise (local); mJy/beam
281-286 F6.3 mJy Sky Median sky level; mJy/beam
291-296 F6.1 --- SNR Signal-to-noise of peak before corrections
298 A1 --- mT [GP] Measurement type (Gauss or Polygon)
304 I1 --- fA [0] Artefact flag (manual inspection)
314 I1 --- fC [0/1] Source within 12" of another (close-by)
323 I1 --- fE [0/1] Source within 2' of survey edge
329 I1 --- fN [0/1] Source in high-noise region (>0.45mJy/bm)
338 I1 --- fD [0/1] High density of possibly spurious sources
346 I1 --- fB [0/1] Within 3' of a >500mJy/bm source
358 I1 --- fS [0/1] Imaged using the smooth weighting scheme
375 I1 --- O7 [0/1] Overlaps with another 7-sigma source
388 I1 --- O5 [0/1] Overlaps with a 5 to 7-sigma source
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Note (1): Measured angular scale of the emission Θf (angular size),
which has been determined from the geometric average of the major and
minor Gaussian fit axes, or the intensity-weighted diameter in the
case of extended emission.
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History:
15-May-2013: Copied at http://cornish.leeds.ac.uk/public/catalogue.php
References:
Hoare et al. Paper I 2012PASP..124..939H 2012PASP..124..939H
Kalcheva et al., Paper III 2018A&A...615A.103K 2018A&A...615A.103K, Cat. J/A+A/615/A103
Irabor et al., Paper IV 2018MNRAS.480.2423I 2018MNRAS.480.2423I, Cat. J/MNRAS/480/2423
(End) Emmanuelle Perret [CDS] 15-May-2013