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J/ApJ/660/1093      Weak MgII absorbers at 0.4<z<2.4         (Narayanan+, 2007)

A survey of weak Mg II absorbers at 0.4 < z < 2.4. Narayanan A., Misawa T., Charlton J.C., Kim T.-S. <Astrophys. J., 660, 1093-1105 (2007)> =2007ApJ...660.1093N
ADC_Keywords: QSOs ; Equivalent widths Keywords: galaxies: evolution - intergalactic medium - quasars: absorption lines Abstract: We present results from a survey of weak MgII absorbers in the VLT/UVES spectra of 81 QSOs obtained from the ESO archive. In this survey, we identified 112 weak MgII systems within the redshift interval 0.4<z<2.4 with 86% completeness down to a rest-frame equivalent width of Wr(2796)=0.02Å, overing a cumulative redshift path length of {DELTA}Z∼77.3. Description: Our sample of 81 quasar spectra used for the survey was retrieved from the ESO archive. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 83 143 UVES/VLT archive QSO data set table2.dat 60 116 Weak MgII systems detected
See also: J/AJ/106/848R : QSO MgII absorption line systems (Drinkwater+, 1993) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- QSO Target name 12- 17 F6.4 --- z Quasar redshift 19- 23 F5.2 mag Vmag ? Quasar V magnitude 24 A1 --- n_Vmag [g] g when SDSS-g magnitude 27- 30 I4 0.1nm lam1 ? First value of wavelength coverage interval 31 A1 -- --- [-] 32- 36 I5 0.1nm lam2 ? Second value of wavelength coverage interval 38- 40 I3 --- Set1 ? Cross-disperser setting 41 A1 --- --- [x] 42- 44 I3 --- Set2 ? Cross-disperser setting 46- 50 I5 s Texp Exposure time 52- 63 A12 --- Prog Program ID 66- 83 A18 --- PI PI name of the program
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- QSO Quasar name 13- 20 F8.6 --- zabs Redshift of the absorber 22- 26 F5.3 0.1nm Wr(2796) Measured rest-frame equivalent width of MgII λ2796Å 28- 32 F5.3 0.1nm e_Wr(2796) rms uncertainty on Wr(2796) 34- 38 F5.3 0.1nm Wr(2803) Measured rest-frame equivalent width of MgII λ2803Å 40- 44 F5.3 0.1nm e_Wr(2803) rms uncertainty on Wr(2803) 46- 49 F4.2 --- DR Doublet ratio given by Wr(2796)/Wr(2803) 51- 54 F4.2 --- e_DR rms uncertainty on DR 56- 60 F5.2 --- Z(Wr,DR) ? Cumulative redshift path length (1)
Note (1): The first four listed systems have z<0.4, and are therefore not part of our survey.
History: * 30-Jun-2010: From electronic version of the journal * 14-Aug-2010: names of quasars homogenized between tables 1 and 2
(End) Patricia Vannier [CDS] 30-Jun-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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