J/ApJS/184/271    Photometry of galaxies in 3 clusters    (Chiboucas+, 2009)
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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
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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 r^1/4^ 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]? r^1/4^ 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 r^1/4^ law fit
  38- 43  F6.3 [arcsec]     r.dev   ? Log effective radius from r^1/4^ law fit
  45- 49  F5.2 mag/arcsec2  mu.dev  ? Mean effective surface brightness
                                     from r^1/4^ 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
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(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    26-Feb-2010