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J/ApJ/724/714  Velocity dispersions of MS1054-03 & Coma galaxies (Holden+, 2010)
M/LB and color evolution for a deep sample of M* cluster galaxies at
z ∼ 1: the formation epoch and the tilt of the fundamental plane.
    Holden B.P., van der Wel A., Kelson D.D., Franx M., Illingworth G.D.
   <Astrophys. J., 724, 714-729 (2010)>
   =2010ApJ...724..714H
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; Photometry ;
              Morphology ; Redshifts ; Velocity dispersion
Keywords: galaxies: clusters: general -
          galaxies: clusters: individual (EMSS 1054.4-0321) -
          galaxies: elliptical and lenticular, cD - galaxies: evolution -
          galaxies: fundamental parameters - galaxies: photometry

Abstract:
    We have measured velocity dispersions (σ) for a sample of 36
    galaxies with J<21.2 or Mr←20.6mag in MS 1054-03, a massive cluster
    of galaxies at z=0.83. Our data are of uniformly high quality down to
    our selection limit, our 16h exposures typically yielding errors of
    only δ(σ)∼10% for L* and fainter galaxies. By combining
    our measurements with data from the literature, we have 53 cluster
    galaxies with measured dispersions, and HST/ACS-derived sizes, colors
    and surface brightness. This sample is complete for the typical L*
    galaxy at z∼1, unlike most previous z∼1 cluster samples which are
    complete only for the massive cluster members (>1011M☉). We
    find no evidence for a change in the tilt of the fundamental plane
    (FP).

Description:
    We based our sample on a magnitude-limited survey of galaxies in the
    field of MS 1054-03. The original selection was done using a limiting
    magnitude of J=21.2mag (Vega) from a catalog of galaxies observed with
    the CFH12K at CFHT and the WIRC camera on the du Pont. Each galaxy in
    this sample had either a spectroscopic redshift, or a photometric
    redshift from a catalog of BVRIJH imaging data. Galaxies with
    spectroscopic redshifts were preferred in our selection. These
    photometric redshifts, the catalog construction, and the spectroscopic
    subsample will be discussed in a later paper.

    The ACS imaging used in this paper comes from two separate programs.
    The first, discussed in Blakeslee et al. (2006, Cat. J/ApJ/644/30),
    used the F606W, F775W, and F850LP filters to image the center of the
    cluster. The second program imaged the outer regions of MS 1054-03
    with the V606 and the F814W, or I814 filter.

    The spectral data were acquired over two observing runs in 2008
    January and March on the DEIMOS spectrograph.

    Our low-redshift comparison sample is a subset of the Coma sample from
    Holden et al. (2007ApJ...670..190H).
Objects:
    ---------------------------------------------------
       RA   (2000)    DE     Designation(s)
    ---------------------------------------------------
    10 57 00.2    -03 37 27  MS 1054-03   = ClG 1054-03
    12 59 48.7    +27 58 50  Coma cluster = ACO  1656
    ---------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
tablea1.dat       84       76   Data for galaxies in MS1054-03
tablea2.dat       43       80   Data for galaxies in Coma


See also:
 B/hst : HST Archived Exposures Catalog (STScI, 2007)
 J/ApJ/693/617   : Ellipticities of cluster early-type galaxies (Holden+, 2009)
 J/MNRAS/386/715 : Absorption-line strengths in Coma galaxies (Trager+, 2008)
 J/ApJ/684/905   : Galaxy clusters from IRAC Shallow Survey (Eisenhardt+, 2008)
 J/ApJS/169/225  : Photometry in the Coma cluster (Eisenhardt+, 2007)
 J/ApJ/661/750   : Photometry & spectroscopy of MS1054-03 members (Tran+, 2007)
 J/AJ/131/1891   : Photometric survey of MS 1054-03 field (Foerster-Schreiber+,
                   2006)
 J/ApJ/644/30    : HST Observations of 2 high-z clusters (Blakeslee+, 2006)
 J/AJ/131/143    : Morphology of galaxies (Homeier+, 2006)
 J/AJ/131/1288   : Composite spectra of early-type galaxies (Bernardi+, 2006)
 J/ApJ/633/174   : Spheroidals and bulge dominated galaxies (Treu+, 2005)
 J/AJ/127/2484   : Early-type galaxies color evolution (Holden+, 2004)


Byte-by-byte Description of file: tablea1.dat

   Bytes Format Units   Label     Explanations

       1  A1    ---     f_ID      [w] w: Sample from W04 (1)
   2-  6  I5    ---     ID        [1192/11945] Identification number
   8- 12  F5.3  ---     z         [0.66/0.857]? Redshift
  14- 18  F5.3  [km/s]  sigma     ? log10 of velocity dispersion
  20- 24  F5.3  [km/s]  e_sigma   ? sigma uncertainty
  26- 31  F6.3  [kpc]   re        log_10_ of effective radius (2)
  33- 37  F5.3  [kpc]   e_re      re uncertainty (2)
  39- 42  F4.2  ---     q         [0/1] Ratio of the minor to major axis (2)
  44- 46  F3.1  ---     n         Sersic index (2)
  48- 52  F5.2  mag     <Ie>      Average surface brightness within the
                                effective radius in rest-frame B (-0.4µB) (2)
  54- 58  F5.2  mag     Bz        B-band redshifted magnitude to z=0.83
  60- 64  F5.2  mag     (U-V)z    (U-V)_z_ color index (3)
  66- 70  F5.2  mag     rz        r-band redshifted AB magnitude to z=0.83
  72- 73  I2    ---     T         Morphological class (4)
  75- 79  F5.2  mag     Jmag      [0.1/21.76] J-band magnitude (Vega)
  81- 84  F4.2  mag     I-J       [0/1.4] I-J color index

Note (1): The galaxies with redshifts are those we re-observed as part of our
          program. All of the other galaxies have spectroscopic information
          from Wuyts et al., 2004ApJ...605..677W (<[BVF2002] NNNN> in Simbad),
          which does not list redshifts, though those can be found in Tran et
          al. (2007, Cat. J/ApJ/661/750, <[VFK98] NNNN> in Simbad).
Note (2): These are the measured values from fitting a elliptical Sersic model
          to the two-dimensional images. See section 4.1.1.
Note (3): U-Vz refers to the U-V color as if measured by U and V filters
          redshifted to z=0.831, the redshift of the cluster.
Note (4): The scheme is the same as Postman et al. (2005ApJ...623..721P).
          E: -5≤T≤-3, S0: -2≤T≤-1, with spirals 0≤T≤10.


Byte-by-byte Description of file: tablea2.dat

   Bytes Format Units   Label   Explanations

   1-  3  I3    ---     ID      [24/240] Identification number (1)
   5-  9  F5.3  [km/s]  sigma   log10 of velocity dispersion
  11- 16  F6.3  [kpc]   re      log10 of effective radius
  18- 21  F4.2  ---     q       Ratio of the minor to major axis
  23- 25  F3.1  ---     n       Sersic index
  27- 32  F6.2  mag     <Ie>    Average surface brightness within the
                                effective radius in rest-frame B (-0.4µB)
  34- 38  F5.2  mag     Bz      B-band redshifted magnitude to z=0.83
  40- 43  F4.2  mag     (U-V)z  ? (U-V) redshifted color index to z=0.831

Note (1): These are galaxies in the Jorgensen et al., 1996MNRAS.280..167J,
     catalog with the corresponding selection of E and S0 galaxies above a
     r magnitude limit of r<15.1mag AB. Each galaxy has a surface brightness
     profile derived from reprocessed SDSS imaging, see Holden et al.
     (2007ApJ...670..190H). This processing mimics what was done foro
     MS 1054-03, so we have comparable data sets. 
     These galaxies are <[D80] ACO 1656 NNN> in Simbad.


History:
    From electronic version of the journal
(End)                                     Emmanuelle Perret [CDS]    31-Jul-2012