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 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:
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FileName Lrecl Records Explanations
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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
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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
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Bytes Format Units Label Explanations
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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 I.dev ? Total F814W magnitude from r1/4 law fit
38- 43 F6.3 [arcsec] r.dev ? Log effective radius from r1/4 law fit
45- 49 F5.2 mag/arcsec2 mu.dev ? 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
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 26-Feb-2010