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J/ApJS/168/19     Chandra sources in 5 galaxy clusters      (Martel+, 2007)
The host galaxies and environment of Chandra-selected active galactic nuclei in
the deep ACS GTO cluster fields.
    Martel A.R., Menanteau F., Tozzi P., Ford H.C., Infante L.
   <Astrophys. J. Suppl. Ser., 168, 19-57 (2007)>
   =2007ApJS..168...19M
ADC_Keywords: Clusters, galaxy ; Active gal. nuclei ; X-ray sources ;
              Photometry, HST ; Redshifts
Keywords: galaxies: active - galaxies: clusters: general -
          galaxies: clusters: individual (RX J0152-1357, RX J0849+4452,
          RDCS J0910+5422, MS 1054-0321, RDCS J1252-2927) -
          X-rays: galaxies: clusters

Abstract:
    We present catalogs and images of optical counterparts to the
    Chandra-selected X-ray sources found in the fields of the five
    clusters RX J0152-1357, RX J0849+4452, RDCS J0910+5422, MS 1054-0321,
    and RDCS J1252-2927, which were imaged with the Advanced Camera for
    Surveys as part of the ACS Guaranteed Time Observer programs. A total
    of 98 X-ray sources fall within the ACS mosaics, and positive
    identifications are made for ∼96% of them, including confirmed cluster
    members. We classify the sources as active galactic nuclei (AGNs) or
    QSOs depending on their X-ray output.

Description:
    All five clusters of the sample were observed as part of the ACS GTO
    programs 9290 and 9919 in Cycles 11 and 12.
    Chandra observations were made for RX J0152-1357 was observed on 2000
    Sep 8, RX J0849+4452 on 2000 May 3-4, RDCS J0910+5422 on 2001 Apr 24
    and 28, MS 1054-0321 on 2000 Apr 21, and RDCS J1252-2927 on 2003 Mar
    18 and 20.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
tables.dat       121       98   Optical and X-Ray properties of Chandra sources
                              in the five cluster's ACS fields
                              (tables 4-8 of the paper)


See also:
      B/chandra : The Chandra Archive Log (CXC, 1999-)
 J/ApJS/155/271 : Chandra Deep Field-South: Optical spectroscopy (Szokoly+ 2004)
 J/ApJ/663/164  : RDCS J1252.9-2927 VLT and ACS observations (Demarco+, 2007)


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

   Bytes Format Units      Label   Explanations

       1  I1    ---        Code    Code for Cluster (1)
   3-  5  I3    ---        XID     Chandra ID (2)
       6  A1    ---        n_XID   Note on XID (3)
   8-  9  I2    h          RAh     Right ascension (J2000)
  11- 12  I2    min        RAm     Right ascension (J2000)
  14- 18  F5.2  s          RAs     Right ascension (J2000)
      20  A1    ---        DE-     Declination sign (J2000)
  21- 22  I2    deg        DEd     Declination (J2000)
  24- 25  I2    arcmin     DEm     Declination (J2000)
  27- 31  F5.2  arcsec     DEs     Declination (J2000)
  33- 38  F6.4  ---        z       ? Spectroscopic redshift unless specified
      39  A1    ---        n_z     [p] p for BPZ photometric redshift
  41- 45  F5.2  mag        Vmag    ? Isophotal SEXtractor V(F625W) magnitude
                                     in AB system (4)
  47- 50  F4.2  mag        e_Vmag  ? rms uncertainty on Vmag
  52- 56  F5.2  mag        imag    ? Isophotal SEXtractor i(F775W) magnitude
                                     in AB system (4)
  58- 61  F4.2  mag        e_imag  ? rms uncertainty on imag
  63- 67  F5.2  mag        Zmag    ? Isophotal SEXtractor Z(F850LP) magnitude
                                     in AB system (4)
  69- 72  F4.2  mag        e_Zmag  ? rms uncertainty on Zmag
  74- 78  F5.2  ---        HR      ? Hardness ratio ((H-S)/(H+S))
  80- 83  F4.2  ---        e_HR    ? rms uncertainty on HR
  85- 92  F8.5  aW/m2      FS      Observed Chandra flux in the soft
                                    (0.5-2keV) band (10-15erg/cm2/s)
  93-100  F8.5  aW/m2      FH      Observed Chandra flux in the hard
                                    (2-10keV) band (10-15erg/cm2/s)
 102-106  F5.2  [10-7W]    logLXS  ? Base 10 logarithm of the observed X-ray
                                     luminosity in the soft band (0.5-2keV)
 108-112  F5.2  [10-7W]    logLXH  ? Base 10 logarithm of the observed X-ray
                                     luminosity in the hard band (2-10keV)
     114  I1    ---        Cl      [1/3]? Visual classification of the galaxies
                                     into three general morphological types (5)
 116-121  A6    ---        XCl     X-ray class as in Szokoly et al.
                                    (2004, Cat. J/ApJS/155/271

Note (1): Cluster code as follows:
      4 = RX J0152-1357   ([MMT2007] ClG J0152-1357 NN)
      5 = RX J0849+4452   ([MMT2007] ClG J0849+4452 NNN)
      6 = RDCS J0910+5422 ([MMT2007] RDCS J0910+5422 NN)
      7 = MS 1054-0321    ([MMT2007] 1E 1054.4-0321 NNN)
      8 = RDCS J1252-2927 ([MMT2007] RDCS J1252-2927 NNN)
Note (2): Sources identified as [MMT2007] Cluster NNN in Simbad.

Note (3): Individual notes as follows:
      a = No optical counterpart is detected by SExtractor, although some
          very low-surface brightness material is observed within the
          error circle. The position of the X-ray peak after registration
          is listed.
      b = The X-ray peak is located approximately 0.9" to the southeast of
          a resolved galaxy with a compact core. We list the properties
          of this galaxy in the table.
      c = The X-ray emission coincides with an extended low surface
          brightness patch. There is a brighter (i775=23.9), compact
          source ∼1.7" to the southwest.
      d = The X-ray emission is extended and overlaps a faint optical
          source whose properties we list here.
      e = Saturated unresolved source
      f = The optical source appears unresolved but possibly imbedded in
          a compact, faint nebulosity.
      g = The optical source appears unresolved but possibly imbedded in
          a compact, faint nebulosity.
      h = The X-ray emission consists of two peaks aligned along a
          north-south axis and separated by ∼4". The northern peak
          coincides with a large spiral galaxy whose properties we list here.
      i = No optical counterpart is detected in the ACS detection image.
          The position of the X-ray peak after registration is listed.
      j = No optical counterpart is detected in the ACS detection image.
          The peak X-ray position after registration is listed.
      k = Saturated unresolved source.
      l = There are two compact optical sources separated by 0.3". We list
          the properties of the northwest source, which is the brightest
          of the two in our detection image.
      m = The X-ray emission is weak and extended and covers two sources,
          a large, smooth spheroid listed in the table and a smaller
          spheroid located 1.9" to the southwest.
      n = The X-ray emission extends over a highly disturbed system that
          appears to consist of two merging galaxies. We list the
          properties of the southwest galaxy, the brightest and most
          extended of the two.
      o = Because the X-ray emission is extended, there is possible
          confusion in the optical identification between the compact
          galaxy listed in the table and a more diffuse and dimmer galaxy
          0.8" to the northwest.
      p = The X-ray peak, whose coordinates are listed here after
          registration, is located between a compact source (i775∼24.5)
          at RA(J2000.0)=12:52:59.61 and DE(J2000.0)=-29:24:52.6 and
          several diffuse sources.
Note (4): Magnitudes are corrected for Galactic extinction.

Note (5): General morphological types as follows:
      1 = early-type
      2 = late-type
      3 = irregular/peculiar


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    08-Aug-2009