J/ApJS/190/43 Deep GALEX observations of the Coma cluster (Hammer+, 2010)
Deep GALEX observations of the Coma cluster: source catalog and galaxy counts.
Hammer D., Hornschemeier A.E., Mobasher B., Miller N., Smith R.,
Arnouts S., Milliard B., Jenkins L.
<Astrophys. J. Suppl. Ser., 190, 43-57 (2010)>
=2010ApJS..190...43H 2010ApJS..190...43H
ADC_Keywords: Clusters, galaxy ; Photometry, SDSS ; Photometry, ultraviolet
Keywords: catalogs - galaxies: clusters: individual (Coma) -
galaxies: statistics - techniques: photometric - ultraviolet: galaxies
Abstract:
We present a source catalog from a deep 26ks Galaxy Evolution Explorer
(GALEX) observation of the Coma cluster in the far-UV (FUV; 1530Å)
and near-UV (NUV; 2310Å) wavebands. The observed field is centered
∼0.9° (1.6Mpc) southwest of the Coma core in a well-studied region
of the cluster known as "Coma-3". The entire field is located within
the apparent virial radius of the Coma cluster, and has optical
photometric coverage with Sloan Digital Sky Survey (SDSS) and deep
spectroscopic coverage to r∼21. We detect GALEX sources to NUV=24.5
and FUV=25.0, which corresponds to a star formation rate of
∼10-3M☉/yr for galaxies at the distance of Coma. We have
assembled a catalog of 9700 galaxies with GALEX and SDSS photometry,
including 242 spectroscopically confirmed Coma member galaxies (in
fig. 1) that span a large range of galaxy types from giant spirals and
elliptical galaxies to dwarf irregular and early-type galaxies. The
full multi-wavelength catalog (cluster plus background galaxies) is
∼80% complete to NUV=23 and FUV=23.5. The GALEX images presented here
are very deep and include detections of many resolved cluster members
superposed on a dense field of unresolved background galaxies.
Description:
We were awarded a deep 30ks GALEX observation of the Coma cluster as
part of the Cycle-II Guest Investigator program (P.I. Hornschemeier).
This field has an integrated exposure time similar to the Deep Imaging
Survey (DIS). The observing sequence for our GALEX field consists of
35 individual exposures with durations that range between 100 and
1700s. The GALEX field is centered at RA=194.34167° and
DEC=27.17722° (J2000).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 72 9700 Properties of the GALEX/SDSS catalog in Coma
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See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983)
J/ApJS/97/77 : Catalog of Coma Cluster Galaxies (Doi+ 1995)
J/A+A/303/661 : Star-forming galaxies in the Coma Cluster (Donas+, 1995)
J/A+AS/122/409 : Photometric catalogue of Coma (Lobo+, 1997)
J/AJ/121/2331 : SDSS redshifts in the Coma cluster (Castander+, 2001)
J/AJ/124/3061 : uz,vz,bz,yz photometry in Coma cluster (Odell+, 2002)
J/A+A/397/421 : r' photometry of Abell 1367 and Coma (Iglesias-Paramo+, 2003)
J/ApJS/169/225 : Photometry of galaxies in the Coma cluster (Eisenhardt+,
2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
11- 18 F8.5 deg DEdeg Declination in decimal degrees (J2000)
20 I1 --- Type [3,6] SDSS-DR6 star/galaxy classification (1)
22- 26 F5.2 mag umag SDSS-DR6 u band Petrosian magnitude (2)
28- 32 F5.2 mag gmag SDSS-DR6 g band Petrosian magnitude (2)
34- 38 F5.2 mag rmag SDSS-DR6 r band Petrosian magnitude (2)
40- 44 F5.2 mag imag SDSS-DR6 i band Petrosian magnitude (2)
46- 50 F5.2 mag zmag SDSS-DR6 z band Petrosian magnitude (2)
52- 56 F5.2 mag NUVmag ?=99.00 GALEX NUV band magnitude (AB scale)
58- 61 F4.2 mag e_NUVmag ?=0.00 The 1σ error in NUVmag
63- 67 F5.2 mag FUVmag ?=99.00 GALEX FUV band magnitude (AB scale)
69- 72 F4.2 mag e_FUVmag ?=0.00 The 1σ error in FUVmag
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Note (1): Classification as follows:
3 = extended galaxy;
6 = point source.
Note (2): Magnitudes on the AB system, corrected for Galactic reddening.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 29-Sep-2010