J/A+A/528/A36 u*g'r'i' photometry of A496 faint LSB galaxies (Ulmer+, 2011)
A search for faint low surface brightness galaxies in the relaxed cluster
Abell 496.
Ulmer M.P., Adami C., Durret F., Ilbert O., Guennou L.
<Astron. Astrophys., 528, A36-36 (2011)>
=2011A&A...528A..36U 2011A&A...528A..36U
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Redshifts
Keywords: galaxies: clusters: individual: Abell 496 -
galaxies: luminosity function, mass function
Abstract:
Cluster faint low surface brightness galaxies (fLSBs) are difficult to
observe. Consequently, their origin, physical properties and number
density are not well known. After a first search for fLSBs in the
highly substructured Coma cluster, we present here a search for fLSBs
in the nearly relaxed Abell 496 cluster.
Abell 496 appears to be a much more relaxed cluster than Coma, but
still embedded in a large scale filament of galaxies. Our aim is to
compare the properties of fLSBs in these two very different clusters,
to search for environmental effects.
Description:
Based on deep CFHT/Megacam images in the u*, g', r' and i'
bands, we selected galaxies with r'>21 and pmr'>24mag/arcsec2. We
estimated photometric redshifts for all these galaxies and kept the
142 fLSBs with photo-z <0.2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea.dat 71 142 Properties of the fLSBs with photo-z<0.2
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See also:
J/A+A/428/823 : HI catalog of low surface brightness galaxies (O'Neil+, 2004)
Byte-by-byte Description of file: tablea.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/142] Sequential number,
[UAD2011] NNN in Simbad
5- 11 F7.4 deg RAdeg Right ascension in decimal degrees (J2000)
13- 20 F8.4 deg DEdeg Declination in decimal degrees (J2000)
22- 26 F5.2 mag u*mag CFHT Megaprime/Megacam u* magnitude
28- 31 F4.2 mag e_u*mag rms uncertainty on u*mag
33- 37 F5.2 mag g'mag CFHT Megaprime/Megacam g' magnitude
39- 43 F5.2 mag e_g'mag ?=-9.99 rms uncertainty on g'mag (1)
45- 49 F5.2 mag r'mag CFHT Megaprime/Megacam r' magnitude
51- 54 F4.2 mag e_r'mag rms uncertainty on r'mag
56- 60 F5.2 mag i'mag CFHT Megaprime/Megacam i' magnitude
62- 66 F5.2 mag e_i'mag ?=-9.99 rms uncertainty on i'mag (1)
68- 71 F4.2 --- zph Photometric redshift
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Note (1): Magnitude errors of -9.99 correspond to the fLSBs for which the
brightness profile fit by a Gaussian did not converge (see Sect. 2.3).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 23-Jul-2012