Q1759+75                                                    ! QSO name
17:57:46.39                                                 ! RA (2000)
+75:39:16.01                                                ! DEC (2000)
 3.050000                                                   ! QSO zem
 3                                                          ! flg_QSOmag
16.100000                                                   ! QSO Mag
 2.625300                                                   ! zab
20.800                                                      ! NHI
 0.100                                                      ! sig(NHI)
/home/xavier/DLA/Abund/Q1759.z262.clm                       ! Abund file
 1                                                          ! flg_Fe
 -1.209                                                     ! [Fe/H]
  0.100                                                     ! sig(Fe)
 2                                                          ! flg_Zn
 -1.782                                                     ! [Zn/H]
  0.158                                                     ! sig(Zn)
 1                                                          ! flg_Alpha
 -1.803                                                     ! [Alpha/H]
  0.058                                                     ! sig(Alpha)

• {QSO name} -- Sometimes I choose the name which identifies the Quasar survey, sometimes I don't.
• {RA (2000)} --
• {DEC (2000)} --
• {QSO zem} -- Usually the published emission redshift. Sometimes it is me eyeballing the Lya forest
• {flg_QSOmag} -- Integer indicating the filter of the Quasar magnitude on the following line.
  • 1=B
  • 2=V
  • 3=R
  • 4=r
  • 5=I
  • 6=i
• {QSO Mag} --
• {zab} -- Absorption redshift determined from a metal-line profile. The value is often but not always the redshift of the strongest feature in the low-ion profiles
• {NHI} -- Log10 [N(HI)]
• {sig(NHI)} -- sigma( Log10 [N (HI)])
• {Abund file} -- Internal file of no use to you
• {flg_Fe} -- Flag describing the following [Fe/H] value.
  • 0 = No measurement
  • 1 = Fe measurement
  • 2 = Lower limit on [Fe/H]
  • 3 = Upper limit on [Fe/H]
  • 4 = Ni measurement; Includes a -0.1 offset
  • 5 = Cr; Includes a -0.2 offset
  • 6 = Al; No offset
• {[Fe/H]} -- [Fe/H] value as described by flg_Fe
• {sig(Fe)} -- 1 sigma error on [Fe/H]. Usually dominated by sig(NHI)
• {flg_Zn} -- Flag describing the following [Zn/H] value.
  • 0 = No measurement
  • 1 = Zn measurement
  • 2 = Lower limit on [Zn/H]
  • 3 = Upper limit on [Zn/H]
• {[Zn/H]} -- [Zn/H] value
• {sig(Zn)} -- 1 sigma error on [Zn/H]
• {flg_Alpha} -- Flag describing the following [Alpha/H] value.
  • 0 = No measurement
  • 1 = Si measurement
  • 2 = Lower limit on [Si/H]
  • 3 = Upper limit on [Si/H]
  • 4 = S measurement
  • 5 = O measurement
  • 6 = Ar measurement
• {[Alpha/H]} -- [Alpha/H] value
• {sig(Alpha)} -- 1 sigma error on [Alpha/H]