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J/ApJ/725/1252       Confirmed members of RX J0152.7-1357       (Demarco+, 2010)
Star formation histories in a cluster environment at z ∼ 0.84.
    Demarco R., Gobat R., Rosati P., Lidman C., Rettura A., Nonino M.,
    van der Wel A., Jee M.J., Blakeslee J.P., Ford H.C., Postman M.
   <Astrophys. J., 725, 1252-1276 (2010)>
   =2010ApJ...725.1252D
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; Redshifts ;
              Photometry, HST ; Photometry, infrared
Keywords: galaxies: clusters: general - galaxies: evolution -
          galaxies: clusters: individual (RX J0152.7-1357) - galaxies: formation

Abstract:
    We present a spectrophotometric analysis of galaxies belonging to the
    dynamically young, massive cluster RX J0152.7-1357 at z∼0.84, aimed
    at understanding the effects of the cluster environment on the star
    formation history (SFH) of cluster galaxies and the assembly of the
    red sequence (RS). We use VLT/FORS spectroscopy, ACS/WFC optical, and
    NTT/SofI near-IR data to characterize SFHs as a function of color,
    luminosity, morphology, stellar mass, and local environment from a
    sample of 134 spectroscopic members. In order to increase the
    signal-to-noise ratio, individual galaxy spectra are stacked according
    to these properties. Moreover, the D4000, Balmer, CN3883, Fe4383, and
    C4668 indices are also quantified.

Description:
    As reported in Blakeslee et al. (2006, Cat. J/ApJ/644/30),
    RX J0152.7-1357 was observed with ACS on board the Hubble Space
    Telescope (HST) in three bands: F625W (r625), F775W, and F850LP. The
    near-IR data were obtained with SofI on the ESO NTT (see Demarco et
    al. 2005, Cat. J/A+A/432/381).

    In this study, we use the spectra of the 102 cluster members confirmed
    by Demarco et al. (2005, Cat. J/A+A/432/381), complemented with the
    spectra of 32 new cluster members obtained from subsequent FORS2
    spectroscopy on the ESO VLT. The data were collected between 2005
    November 4 and November 7, in Visitor Mode (ESO prog ID 076.A-0889(A)).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        57      134   Spectroscopically confirmed cluster members


See also:
   B/eso : ESO Science Archive Catalog (ESO, 2012)
   B/hst : HST Archived Exposures Catalog (STScI, 2007)
   J/MNRAS/392/1509 : Distribution of AGNs in galaxy clusters (Gilmour+, 2009)
   J/ApJS/184/271   : Photometry of galaxies in 3 clusters (Chiboucas+, 2009)
   J/AJ/131/143     : Morphology of galaxies (Homeier+, 2006)
   J/MNRAS/365/1392 : VRi'z' phot. + redshifts around RX J0152.7-1352 (Tanaka+,
                      2006)
   J/ApJ/644/30  : HST observations of 2 high-z clusters (Blakeslee+, 2006)
   J/A+A/432/381 : VLT spectroscopic survey of RX J0152.7-1357 (Demarco+, 2005)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  5  A5    ---    [DRL2005]  Galaxy ID (as in Demarco et al., 2005,
                                  Cat. J/A+A/432/381, for the 102 already known)
   7- 13  F7.4  deg     RAdeg     Right ascension in decimal degrees (J2000)
  15- 22  F8.4  deg     DEdeg     Declination in decimal degrees (J2000)
  24- 29  F6.3  mag     Ksmag     ? NTT/SofI Ks-band magnitude
  31- 35  F5.3  mag     e_Ksmag   ? Ksmag uncertainty
  37- 42  F6.3  mag     r-Ks      ? r625-Ks color index
  44- 48  F5.3  mag     e_r-Ks    ? r-Ks uncertainty
  50- 55  F6.4  ---     z         Galaxy redshift (with error∼10-3)
      57  I1    ---     EL        [0/2] Emission line flag as in Demarco et al.,
                                  2005, Cat. J/A+A/432/381 (1)

Note (1): Flag as follows:
    0 = passive galaxy
    1 = emission line galaxy
    2 = AGN


History:
    From electronic version of the journal

References:
    Demarco et al.     2005A&A...432..381D   Cat. J/A+A/432/381
    Blakeslee et al.   2006ApJ...644...30B   Cat. J/ApJ/644/30
(End)                                     Emmanuelle Perret [CDS]    09-Aug-2012