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J/other/RAA/10.1    BATC photometry in A98 cluster           (Zhang+, 2010)
Multicolor photometry of the galaxy cluster A98:
substructures and star formation properties.
    Zhang L., Yuan Q.-R., Zhou X., Jiang Z.-J., Yang Y.-B., Ma J., Wu J.-H.,
    Wu Z.-Y.
   <Res. Astron. Astrophys., 10, 1-21 (2010)>
   =2010RAA....10....1Z
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Redshifts

Keywords: galaxies: clusters: individual (A98) -
          galaxies: distances and redshifts -
          galaxies: kinematics and dynamics - galaxies: evolution -
          methods: data analysis

Abstract:
    An optical photometric observation with the
    Beijing-Arizona-Taiwan-Connecticut (BATC) multicolor system is carried
    out for A98 (z=0.104), a galaxy cluster with two large enhancements
    in X-ray surface brightness. Spectral energy distributions (SEDs)
    covering 15 intermediate bands are obtained for all sources detected
    down to V∼20mag in a field of 58'x58'. After star-galaxy separation
    with color-color diagrams, a photometric redshift technique is applied
    to the galaxy sample for further membership determination. The
    color-magnitude relation is taken as a further restriction of the
    early-type cluster galaxies. As a result, a list of 198 faint member
    galaxies is achieved. Based

Description:
    From 1996 to 2006, we accumulated 37h in only 12 bands, from d to p,
    with the old CCD camera. In the last two years, exposures in the a, b,
    and c filters were completed with the new CCD camera.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        37       15   Parameters of the BATC filters and the
                              observational statistics of A98
table2.dat        31       73   Catalog of spectroscopically confirmed member
                              galaxies in A98
table3.dat       125      198   Catalog of 198 newly-selected candidates of
                              member galaxies in A98


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

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     No        Filter number
       4  A1    ---     Filt      Filter name
   6-  9  I4    0.1nm   lambdac   Central wavelength
  11- 13  I3    0.1nm   FWHM      Filter full width half maximum (FWHM)
  15- 19  I5    s       TExp      Exposure time
  21- 22  I2    ---     Nimg      Number of images
  24- 27  F4.2  arcsec  Seeing    Seeing of the combined images
  29- 32  I4    ---     Nobj      Number of object detected
  34- 37  F4.1  mag     mag       Completeness magnitude


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     No        Number
       4  I1    h       RAh       Right ascension (J2000)
   6-  7  I2    min     RAm       Right ascension (J2000)
   9- 12  F4.1  s       RAs       Right ascension (J2000)
      14  A1    ---     DE-       Declination sign (J2000)
  15- 16  I2    deg     DEd       Declination (J2000)
  18- 19  I2    arcmin  DEm       Declination (J2000)
  21- 22  I2    arcsec  DEs       Declination (J2000)
  24- 29  F6.4  ---     zsp       Spectroscopic redshift
      31  I1    ---     Ref       Reference (1)

Note (1): References as follows:
   1 = Pinkney et al. (2000, Cat. J/AJ/120/2269)
   2 = Zabludoff et al. (1990ApJS...74....1Z)
   3 = Beers et al. (1982ApJ...257...23B)
   4 = Bettoni et al. (2006A&A...452..811B)


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Seq       [1/198] Sequential number
       5  I1    h       RAh       Right ascension (J2000)
   7-  8  I2    min     RAm       Right ascension (J2000)
  10- 14  F5.2  s       RAs       Right ascension (J2000)
      16  A1    ---     DE-       Declination sign (J2000)
  17- 18  I2    deg     DEd       Declination (J2000)
  20- 21  I2    arcmin  DEm       Declination (J2000)
  23- 27  F5.2  arcsec  DEs       Declination (J2000)
  29- 33  F5.3  ---     zph       Photometric redshift
      35  I1    ---     T         [1/7] Classification index (1)
  37- 41  F5.2  mag     amag      BATC a band (3360Å) magnitude
  43- 47  F5.2  mag     bmag      BATC b band (3890Å) magnitude
  49- 53  F5.2  mag     cmag      BATC c band (4210Å) magnitude
  55- 59  F5.2  mag     dmag      BATC d band (4550Å) magnitude
  61- 65  F5.2  mag     emag      BATC e band (4920Å) magnitude
  67- 71  F5.2  mag     fmag      BATC f band (5270Å) magnitude
  73- 77  F5.2  mag     gmag      BATC g band (5795Å) magnitude
  79- 83  F5.2  mag     hmag      BATC h band (6075Å) magnitude
  85- 89  F5.2  mag     imag      BATC i band (6660Å) magnitude
  91- 95  F5.2  mag     jmag      BATC j band (7050Å) magnitude
  97-101  F5.2  mag     kmag      BATC k band (7490Å) magnitude
 103-107  F5.2  mag     mmag      BATC m band (8020Å) magnitude
 109-113  F5.2  mag     nmag      BATC n band (8480Å) magnitude
 115-119  F5.2  mag     omag      BATC o band (9190Å) magnitude
 121-125  F5.2  mag     pmag      BATC p band (9745Å) magnitude

Note (1): Classification index is
     1 = E;
     2 = SO;
     3 = Sa;
     4 = Sb;
     5 = Sc;
     6 = Sd;
     7 = Im


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    31-Oct-2011