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J/MNRAS/313/469     Streaming motions of galaxy clusters. I. (Smith+, 2000)
Streaming motions of galaxy clusters within 12000km/s
I. New spectroscopic data.
    Smith R.J., Lucey J.R., Hudson M.J., Schlegel D.J., Davies R.L.
   <Mon. Not. R. Astron. Soc. 313, 469 (2000)>
   =2000MNRAS.313..469S
ADC_Keywords: Clusters, galaxy ; Redshifts ; Velocity dispersion

Keywords: galaxies: clusters: general - galaxies: distance and redshifts -
          galaxies: elliptical and lenticular, cD - cosmology: observations -
          large-scale structure of Universe

Abstract:
    The present paper is the first in a series presenting results of the
    "Streaming Motions of Abell Cluster" (SMAC) project. We present new
    spectroscopic data for 532 early-type galaxies, predominantly Abell
    cluster members with cz<12000km/s. We tabulate 919 individual
    measurements, from six observing runs, for recession velocity, cz,
    central velocity dispersion, σ, and magnesium line-strength
    indices, Mg2 and Mgb. The median estimated error, per measurement,
    in σ is 5 per cent. The Mg2 line-strength data have median
    errors of 0.009mag. The observed scatter between repeat measurements
    is largely accounted for by photon-counting errors. These data will be
    employed in forthcoming papers, where they will form part of a merged
    and standardized catalogue of Fundamental Plane data for use in
    cluster distance estimates and peculiar velocity analyses.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        94      919   New spectroscopic data from the six observing runs


See also:
        VII/198 : Mark III Catalog of Galaxy Peculiar Velocities (Willick+ 1997)
  J/MNRAS/327/249  : SMAC. II. Fundamental Plane photometric data (Smith+, 2001)
  J/MNRAS/327/265  : SMAC. III. Fundamental Plane catalog (Hudson+, 2001)
  J/MNRAS/327/1004 : SBF and SMAC synthesis (Blakeslee+, 2001)


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

   Bytes Format Units   Label    Explanations

   1- 15  A15   ---     Galaxy   Galaxy designation
  17- 18  I2    h       RAh      Right ascension (J2000)
  20- 21  I2    min     RAm      Right ascension (J2000)
  23- 27  F5.2  s       RAs      Right ascension (J2000)
      29  A1    ---     DE-      Declination sign (J2000)
  30- 31  I2    deg     DEd      Declination (J2000)
  33- 34  I2    arcmin  DEm      Declination (J2000)
  36- 39  F4.1  arcsec  DEs      Declination (J2000)
  41- 46  A6    ---     Cluster  Cluster assignments of SMAC-III for galaxies
                                  which form part of the final FP sample
  48- 52  A5    ---     Run      Observing run from which each measurement
                                  originates (1)
  54- 56  I3    ---     S/N      Signal-to-noise ratio
  58- 62  I5    km/s    cz       Recession velocity, cz☉
  64- 66  I3    km/s    sigma    Central velocity dispersion (2)
  68- 69  I2    km/s    e_sigma  rms uncertainty on sigma (ecz=esigma/1.2)
  71- 75  F5.3  mag     Mgb'     Magnesium index Mgb'
  77- 81  F5.3  mag     e_Mgb'   rms uncertainty on Mgb'
  83- 87  F5.3  mag     Mg2      Magnesium index Mg2
  89- 93  F5.3  mag     e_Mg2    rms uncertainty on Mg2

Note (1): Log of spectroscopic observing runs.
     ----------------------------------------------------------------------
     Run    Date  Telescope  Spectral range(s)              Aperture
     ----------------------------------------------------------------------
     A94    94.4  3.9m AAT   4800-5600Å, 4940-5740Å   3.0x3.8
     A95B   95/5  3.9m AAT   4800-5600Å, 4940-5740Å   3.0x3.8
     A95B   95/9  3.9m AAT   4800-5600Å, 4940-5740Å   3.0x3.8
     I95    95/2  2.5m INT   4785-5808Å                  3.0x3.4
     I97JA  97/1  2.5m INT   4785-5808Å                  3.0x3.4
     I97MA  977/3 2.5m INT   4785-5808Å                  3.0x3.4
     ----------------------------------------------------------------------
Note (2): The I97JA velocity dispersions have been corrected for the
    S/N effect as discussed in the text, but the data are not corrected
    for aperture effects or for run-to-run offsets.


History: From electronic version

(End)                         James Marcout, Patricia Bauer [CDS]    22-May-2000