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J/MNRAS/346/1103    Redshifts of damped Lymanα absorbers   (Peroux+, 2003)
The evolution of Ω(HI) and the epoch of formation of damped Lymanα
absorbers.
    Peroux C., Mcmahon R.G., Storrie-lombardi L.J., Irwin M.J.
   <Mon. Not. R. Astron. Soc., 346, 1103-1115 (2003)>
   =2003MNRAS.346.1103P
ADC_Keywords: QSOs ; Redshifts ; H I data

Keywords: galaxies: evolution - galaxies: formation - intergalactic medium -
          quasars: absorption lines - cosmology: observations

Abstract:
    We present a study of the evolution of the column density
    distribution, f(N,z), and total neutral hydrogen mass in high column
    density quasar absorbers using candidates from a recent high-redshift
    survey for damped Lymanα (DLA) and Lyman-limit system (LLS)
    absorbers.

Description:
    Our new sample of high-redshift Lyman-limit systems (Peroux et al.,
    2001AJ....121.1799P) is combined with data collected from previous
    surveys (Storrie-Lombardi et al., 1994ApJ...427L..13S) in order to
    determine the number of Lyman-limit system LLS per unit redshift.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        68      713   Quasars with confirmed/candidate damped Lymanα
                            (DLAs, TableA1) and without DLAs detected (TableB1)
refs.dat          81       26   References


See also:
   J/A+A/316/123 : QSO absorber and galaxy evolution (Lindner+ 1996)
   J/ApJ/508/200 : QSO low-z Lyα absorbers (Tripp+, 1999)
   J/ApJ/524/536 : Nearby Lyα quasar absorbers (Impey+, 1999)


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

   Bytes Format Units   Label     Explanations

       1  A1    ---     DLA       [A] for confirmed DLA (table1a)
   3- 19  A17   ---     Quasar    Quasar designation
  22- 27  F6.4  ---     zem       ? Emission redshift
  30- 35  F6.4  ---     zmin      ? Minimum value of emission redshift
  38- 43  F6.4  ---     zmax      ? Maximum value of emission redshift
  46- 51  F6.4  ---     zabs      ? Absorption redshift
  54- 58  F5.2  [cm-2]  logN(HI)  ? HI column density
  60- 68  A9    ---     r_zem     References for redshifts, in refs.dat file


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

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Ref       Reference number
   4- 22  A19   ---     BibCode   BibCode
  24- 49  A26   ---     Aut       Author's name
  52- 81  A30   ---     Com       Comments


History:
  * 12-Jan-2004: From electronic version of the journal
  * 17-Dec-2004: Names corrected in table1.dat
(End)                       James Marcout, Patricia Vannier [CDS]    12-Jan-2004