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J/ApJ/639/766         SDSS-DR3 strong MgII absorbers           (Prochter+, 2006)
On the incidence and kinematics of strong Mg II absorbers.
    Prochter G.E., Prochaska J.X., Burles S.M.
   <Astrophys. J., 639, 766-780 (2006)>
   =2006ApJ...639..766P
ADC_Keywords: QSOs ; Equivalent widths ; Redshifts

Keywords: quasars: absorption lines (Mg II)


Abstract:
    We present the results of two complementary investigations into the
    nature of strong (rest equivalent width, Wr>1.0Å) MgII absorption
    systems at high redshift. The first line of questioning examines the
    complete Sloan Digital Sky Survey Data Release 3 set of quasar spectra
    to determine the evolution of the incidence of strong MgII absorption.
    This search resulted in 7421 confirmed MgII systems of Wr>1.0Å,
    yielding a >95% complete statistical sample of 4835 absorbers (systems
    detected in S/N>7 spectral regions) spanning a redshift range
    0.35<z<2.3.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        63     7421   SDSS-DR3 Wr(2796)>1.0Å MgII systems


See also:
  http://www.sdss.org : SDSS Home Page
  J/MNRAS/354/L25     : MgII absorbers in SDSS QSOs (Bouche+, 2004)


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

   Bytes Format Units  Label   Explanations

   1- 20  A20   ---    SDSS    Quasar SDSS identification (JHHMMSS.ss+DDMMSS.ss)
  22- 23  I2    h      RAh     Hour of Right Ascension (J2000)
  25- 26  I2    min    RAm     Minute of Right Ascension (J2000)
  28- 32  F5.2  s      RAs     Second of Right Ascension (J2000)
      34  A1    ---    DE-     Sign of the Declination (J2000)
  35- 36  I2    deg    DEd     Degree of Declination (J2000)
  38- 39  I2    arcmin DEm     Arcminute of Declination (J2000)
  41- 45  F5.2  arcsec DEs     Arcsecond of Declination (J2000)
  47- 51  F5.3  ---    zQSO    Emission redshift
  53- 57  F5.3  ---    zMgII   The MgII redshift
  59- 63  F5.2  0.1nm  EWr     The MgII rest equivalent width in Angstroms


History:
    From electronic version of the journal
(End)                   Greg Schwarz [AAS], Marianne Brouty [CDS]    21-Mar-2007