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J/ApJS/184/271    Photometry of galaxies in 3 clusters    (Chiboucas+, 2009)

The Gemini/HST cluster project: structural and photometric properties of galaxies in three z = 0.28-0.89 clusters. Chiboucas K., Barr J., Flint K., Jorgensen I., Collobert M., Davies R. <Astrophys. J. Suppl. Ser., 184, 271-287 (2009)> =2009ApJS..184..271C
ADC_Keywords: Clusters, galaxy ; Photometry, HST Keywords: galaxies: clusters: individual (RX J0142.0+2131, RX J0152.7-1357, RX J1226.9+3332) - galaxies: fundamental parameters - methods: data analysis Abstract: We present the data processing and analysis techniques we are using to determine the structural and photometric properties of galaxies in our Gemini/HST Galaxy Cluster Project sample. The goal of this study is to understand cluster galaxy evolution in terms of scaling relations and structural properties of cluster galaxies at redshifts 0.15<z<1.0. To derive parameters such as total magnitude, half-light radius, effective surface brightness, and Sersic n, we fit r1/4 law and Sersic function two-dimensional surface brightness profiles to each of the galaxies in our sample. Using simulated galaxies, we test how the assumed profile affects the derived parameters and how the uncertainties affect our Fundamental Plane results. A catalog of photometry and surface brightness profile parameters is presented for three of the clusters in our sample, RX J0142.0+2131, RX J0152.7-1357, and RX J1226.9+3332 at redshifts 0.28, 0.83, and 0.89, respectively. Description: We have acquired ground-based imaging for the clusters in our sample using GMOS on the Gemini-North 8m telescope. For each of our clusters we have obtained new ACS imaging or used archival HST data to study the galaxy structural parameters with high-resolution data having FWHM=0.1". File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 86 36 RXJ0152.7-1357: photometric and structural parameters table4.dat 86 112 RXJ1226.9+3332: photometric and structural parameters table5.dat 86 28 RXJ0142.0+2131: photometric and structural parameters
See also: J/AJ/127/2455 : Gemini Deep Deep Survey (GDDS) (Abraham+, 2004) J/AJ/130/445 : X-ray-luminous galaxy cluster RX J0142.0+2131 (Barr+, 2005) J/A+A/432/381 : VLT spectroscopic survey of RX J0152.7-1357 (Demarco+, 2005) J/ApJ/644/30 : HST Observations of 2 high-z clusters (Blakeslee+, 2006) Byte-by-byte Description of file: table*.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq Galaxy ID number 6 I1 --- q_Seq [0/1]? r1/4 law fit quality; 0 = poor fit (not for table 5) 8- 17 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000) 19- 28 F10.6 deg DEdeg Declination in decimal degrees (J2000) 30 I1 --- N Number of measurements combined 32- 36 F5.2 mag ? Total F814W magnitude from r1/4 law fit 38- 43 F6.3 [arcsec] ? Log effective radius from r1/4 law fit 45- 49 F5.2 mag/arcsec2 ? Mean effective surface brightness from r1/4 law fit 51- 55 F5.2 mag Iser Total F814W magnitude from Sersic fit 57- 62 F6.3 [arcsec] r.ser Log effective radius from Sersic fit 64- 68 F5.2 mag/arcsec2 mu.ser Mean effective surface brightness from Sersic fit 70- 73 F4.2 --- Ser Sersic index n 75- 79 F5.1 deg PA Position angle 81- 84 F4.2 --- Ell Ellipticity 86 I1 --- Mm [0/1]? Membership; 1=member, 0=non-member
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 26-Feb-2010
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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