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J/ApJ/693/1840           A3266 galaxies at 24um                     (Bai+, 2009)

The infrared luminosity functions of rich clusters. Bai L., Rieke G.H., Rieke M.J., Christlein D., Zabludoff A.I. <Astrophys. J., 693, 1840-1850 (2009)> =2009ApJ...693.1840B
ADC_Keywords: Clusters, galaxy ; Photometry, infrared ; Galaxies, IR Keywords: galaxies: clusters: individual (Abell 3266) - galaxies: luminosity function, mass function - infrared: galaxies Abstract: We present Multiband Imaging Photometer observations of the cluster A3266. About 100 spectroscopic cluster members have been detected at 24um. The infrared (IR) luminosity function (LF) in A3266 is very similar to that in the Coma cluster down to the detection limit LIR∼1043erg/s, suggesting a universal form of the bright-end IR LF for local rich clusters with M∼1015M. The shape of the bright end of the A3266-Coma composite IR LF is not significantly different from that of nearby field galaxies, but the fraction of IR-bright galaxies (star formation rate (SFR)>0.2M/yr) in both clusters increases with cluster-centric radius. The decrease of the blue galaxy fraction toward the high-density cores only accounts for part of the trend; the fraction of red galaxies with moderate SFRs (0.2M/yr<SFR<1M_☉/yr) also decreases with increasing galaxy density. These results suggest that for the IR-bright galaxies nearby rich clusters are distinguished from the field by a lower star forming galaxy fraction, but not by a change in L*IR. Description: The A3266 cluster was observed by the Multiband Imaging Photometer for Spitzer (MIPS) in medium scan map mode on 2005 June 28 at 24, 70, and 160um simultaneously. A rectangular 45'x60' region was mapped. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 48 109 Cluster galaxies with 24µm emission>0.25mJy
See also: J/ApJ/686/966 : Spitzer-FLS catalog of clusters of galaxies (Muzzin+, 2008) J/ApJ/591/764 : R magnitudes for 6 nearby galaxy clusters (Christlein+, 2003) J/AJ/112/36 : Velocities in Abell 3266 (Quintana+ 1996) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 F8.5 deg RAdeg Right Ascension in decimal degrees (J2000) 10- 18 F9.5 deg DEdeg Declination in decimal degrees (J2000) 20- 24 F5.3 --- z Redshift (spectroscopic) 26 I1 --- r_z Reference for z (1) 28- 32 F5.2 mJy F24 Spitzer/MIPS 24 micron band flux density 34- 37 F4.2 mJy e_F24 Uncertainty in F24 39- 43 F5.2 [10-7W] logLIR Log IR luminosity in ergs/s 45- 48 F4.1 Msun/yr SFR Star Formation Rate
Note (1): References for redshifts as follows: 1 = Christlein & Zabludoff (2003, Cat. J/ApJ/591/764); 2 = Quintana et al. (1996, Cat. J/AJ/112/36); 3 = Green et al. (1990MNRAS.243..159G).
Nomenclature Notes: Galaxies of the cluster are <[BRR2009] DD.ddddd+DD.ddddd> in Simbad. History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 17-Mar-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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