J/A+A/472/111       Centaurus Compact Object Survey          (Mieske+, 2007)
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A search for ultra-compact dwarf galaxies in the Centaurus galaxy cluster.
    Mieske S., Hilker M., Jordan A., Infante L., Kissler-Patig M.
   <Astron. Astrophys., 472, 111-119 (2007)>
   =2007A&A...472..111M
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ADC_Keywords: Clusters, galaxy; Radial velocities ; Equivalent widths
Keywords: galaxies: clusters: individual: Centaurus - galaxies: dwarf -
          galaxies: fundamental parameters - galaxies: nuclei -
          galaxies: star clusters

Abstract:
    Our aim is to extend the investigations of ultra-compact dwarf
    galaxies (UCD) beyond the well studied Fornax and Virgo clusters.
    We measured spectroscopic redshifts of about 400 compact object
    candidates with 19.2<V<22.4mag in the central region of the Centaurus
    galaxy cluster (d=43Mpc), using 3 pointings with VIMOS@VLT. The
    luminosity range of the candidates covers the bright end of the
    globular cluster (GC) luminosity function and the luminosity regime of
    UCDs in Fornax and Virgo. Within the area surveyed, our completeness
    in terms of slit allocation is ~30%.

Description:
    The data for this publication were obtained in service mode with the
    VIsible MultiObject Spectrograph VIMOS mounted on UT3 Melipal at the
    VLT (programme 076.B-0293). VIMOS allows simultaneous observing of 4
    quadrants, each of dimension 7'x8', and separated by about 2'. We
    observed three multi-object spectroscopy (MOS) pointings in the
    central Centaurus cluster, covering both NGC 4696 and NGC 4709.

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table1.dat     97       27   Properties of the 27 Centaurus compact objects
                              detected in our survey, ordered by magnitude
table2.dat     74       13   Properties of the 13 Centaurus cluster dEs
                              observed in our study
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See also:
 J/A+AS/124/1  : The Centaurus Cluster Catalogue (Jerjen+ 1997)
 J/A+A/327/952 : Centaurus cluster velocities (Stein+ 1997)
 J/AJ/132/347  : Redshifts & photometry in Centaurus cluster (Chiboucas+, 2006)
 J/ApJS/170/95 : Centaurus Cluster catalog (Chiboucas+, 2007)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1-  4  A4    ---     ---       [CCOS]
   6- 21  A16   ---     CCOS      CCOS designation (JHHMM.mm+DDMM.mm) (1)
  23- 24  I2    h       RAh       Right ascension (J2000)
  26- 27  I2    min     RAm       Right ascension (J2000)
  29- 33  F5.2  s       RAs       Right ascension (J2000)
      35  A1    ---     DE-       Declination sign (J2000)
  36- 37  I2    deg     DEd       Declination (J2000)
  39- 40  I2    arcmin  DEm       Declination (J2000)
  42- 46  F5.2  arcsec  DEs       Declination (J2000)
  48- 52  F5.2  mag     V0mag     Dereddened V magnitude
  54- 57  F4.2  mag     (V-R)0    Dereddened V-R colour index
  59- 62  I4    km/s    RV        Radial velocity
  64- 66  I3    km/s  e_RV        rms uncertainty on RV
  68- 71  F4.2  0.1nm   EW<Fe>    Fe equivalent width
  73- 76  F4.2  0.1nm e_EW<Fe>    rms uncertainty on EW<Fe>
  78- 81  F4.2  0.1nm   EWMgb     Mgb equivalent width
  83- 86  F4.2  0.1nm e_EWMgb     rms uncertainty on EWMgb
  88- 92  F5.2  pc      rhl       ? Half-light radius estimated from HST
                                    archival imaging
  94- 97  F4.2  pc    e_rhl       ? rms uncertainty on rhl
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Note (1): CCOS for Centaurus Compact Object Survey.
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label     Explanations
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   1-  3  A3    ---     ---       [CCC]
   5-  7  I3    ---     CCC       CCC number (Jergen et al., 1997,
                                   Cat. <J/A+AS/124/1>)
   9- 10  I2    h       RAh       Right ascension (J2000)
  12- 13  I2    min     RAm       Right ascension (J2000)
  15- 19  F5.2  s       RAs       Right ascension (J2000)
      21  A1    ---     DE-       Declination sign (J2000)
  22- 23  I2    deg     DEd       Declination (J2000)
  25- 26  I2    arcmin  DEm       Declination (J2000)
  28- 32  F5.2  arcsec  DEs       Declination (J2000)
  34- 38  F5.2  mag     BTmag     CCC BT magnitude
  40- 43  I4    km/s    RV        Radial velocity
  45- 46  I2    km/s  e_RV        rms uncertainty on RV
  48- 51  F4.2  0.1nm   EW<Fe>    Fe equivalent width
  53- 56  F4.2  0.1nm e_EW<Fe>    rms uncertainty on EW<Fe>
  58- 61  F4.2  0.1nm   EWMgb     Mgb equivalent width
  63- 66  F4.2  0.1nm e_EWMgb     rms uncertainty on EWMgb
  68- 71  I4    km/s    RV2       ?=- Stein et al. (1997, Cat. <J/A+A/327/952>)
                                      radial velocity
  73- 74  I2    km/s  e_RV2       ? rms uncertainty on RV2
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History:
    From electronic version of the journal
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(End)                                      Patricia Vannier [CDS]    26-Nov-2007