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J/A+A/283/759       CIV QSO absorption systems                 (Petitjean+ 1994)
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CIV QSO absorption systems and properties of galactic haloes at high redshift
     Petitjean P., Bergeron J.
    <Astron. Astrophys. 283, 759 (1994)>
    =1994A&A...283..759P
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ADC_Keywords: QSOs; Spectroscopy; Redshifts
Keywords: cosmology: observations - quasars: absorption lines -
          galaxies: evolution - galaxies: clustering - galaxies: ISM

Description:
    High spectral resolution (FWHM = 0.6 or 0.35 {AA}) were obtained for
    six high redshift QSOs, z_em_ > 2.2, containing lines from 31
    metal-rich absorption line systems amongst which 20 Civ doublets
    split in subcomponents with velocity differences within a system
    smaller than 400 km.s^-1^. Our survey has been combined with published
    data at similar resolution and the resulting sample comprises 35
    systems, 23 of which are splitted in a total of 87 subcomponents. The
    mean redshift of the sample is <z> = 2.65.

    The observations were carried out at the F/8 Cassegrain focus of the
    3.6m telescope at la Silla, between 1984 and 1989.

File Summary:
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 FileName    Lrecl    Records    Explanations
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ReadMe          80          .    This file
qso.dat         33         10    Positions of the QSOs (from SIMBAD)
table2.dat     101        166    Absorption lines
table3.dat      48         99    Characteristic of the subcomponents
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Byte-by-byte Description of file: qso.dat
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   Bytes Format Units   Label     Explanations
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   1-  2  I2    h       RAh       Right Ascension J2000 (hours)
   4-  5  I2    min     RAm       Right Ascension J2000 (minutes)
   7- 10  F4.1  s       RAs       Right Ascension J2000 (seconds)
      12  A1    ---     DE-       Declination J2000 (sign)
  13- 14  I2    deg     DEd       Declination J2000 (degrees)
  16- 17  I2    arcmin  DEm       Declination J2000 (minutes)
  19- 20  I2    arcsec  DEs       Declination J2000 (seconds)
  24- 32  A9    ---     QSO       Name of the QSO in tables 2 and 3
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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-  8  A8     ---     QSO     QSO name
  11- 17  F7.2   0.1nm   lambda  ? Heliocentric wavelength of absorption lines
  29- 32  F4.2   0.1nm   REW     ? Rest equivalent width of absorption lines
  38- 41  F4.2   0.1nm e_REW     ? rms uncertainty on REW
  43- 59  A17    ---     Ion     Identification of element
  61- 67  F7.5   ---     zabs    ? Mean redshift
      70  I1     ---     n       ? Component number
  74- 77  F4.1  [cm-2]   logN    ? Logarithm of the column density
  79- 82  F4.2  [cm-2] e_logN    ? rms uncertainty on logN
  84- 88  F5.1   km/s    b       ? Doppler parameter
  91- 93  F3.0   km/s  e_b       ? rms uncertainty on b
  95-101  F7.5   ---     zc      ? Redshift of the component
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Byte-by-byte Description of file: table3.dat
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   Bytes Format  Units   Label    Explanations
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   1-  9  A9     ---     QSO      QSO name
      11  A1     ---   r_QSO      References (1)
      13  I1     ---     n        Subcomponent number
  15- 21  F7.5   ---     z        Redshift
  23- 26  F4.0   km/s    DeltaV   Relative velocity
  32- 36  F5.2  [cm-2]   logN     Logarithm of CIV column density
  45- 48  F4.1   km/s    b        Doppler parameter for CIV
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Note (1): References:
    a: Savaglio et al. 1994A&A...281..331S
    b: Pettini et al.  1983ApJ...273..436P
    c: Carswell et al. 1984ApJ...278..486C
    d: Wampler et al.  1993A&A...273...15W
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History:
  * 30-Jul-2001: qso.dat, bibcodes and description added.
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(End)                                          Patricia Bauer [CDS]  23-Feb-1994