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J/A+A/505/1087      DLAs in SDSS-DR7                       (Noterdaeme+, 2009)

Evolution of the cosmological mass density of neutral gas from Sloan Digital Sky Survey. II - Data Release 7. Noterdaeme, P., Petitjean P., Ledoux C., Srianand R. <Astron. Astrophys. 505, 1087 (2009)> =2009A&A...505.1087N
ADC_Keywords: QSOs ; Spectroscopy ; H I data; Redshifts ; Equivalent widths Keywords: cosmology: observations - quasar: absorption lines Abstract: We present a study of the evolution of the cosmological mass density of neutral gas using a fully automatic search for Damped Lyman-alpha systems in the Sloan Digital Sky Survey II Data Release 7. Description: Our sample of high redshift Damped Lyman-alpha systems (DLAs) and sub-DLAs is presented along with associated metal equivalent widths and/or upper-limits. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 199 1426 Damped and sub-damped Lyman alpha absorbers
See also: J/ApJ/543/552 : z>3 damped Lyα abs. systems (Storrie-Lombardi+, 2000) J/other/PASA/19.455 : Damped Lyman alpha absorption of QSOs (Curran+, 2002) J/MNRAS/354/L31 : SDSS DR2 QSO and DLA properties (Murphy+, 2004) J/MNRAS/346/1103 : Redshifts of damped Lymanα absorbers (Peroux+, 2003) J/PASP/116/622 : SDSS damped Lyα survey: DR1 (Prochaska+, 2004) J/ApJ/635/123 : The SDSS-DR3 damped Lyα survey (Prochaska+, 2005) J/ApJ/636/610 : Damped Lyα systems at z<1.65 (Rao+, 2006) J/PASP/118/1077 : Metal-strong damped Lyα systems (Herbert-Fort+, 2006) J/A+A/473/791 : CIV absorption in DLAs and sub-DLAs systems (Fox+, 2007) J/ApJ/661/88 : Zn measurements in sub-DLAs and DLAs QSOs (Kulkarni+, 2007) J/ApJS/171/29 : UCSD/Keck DLA Abundance Database (Prochaska+, 2009) J/MNRAS/392/998 : Damped Lymanα systems (Ellison+, 2009) J/A+A/478/701 : SDSS quasars with DLA systems color excess (Vladilo+, 2008) http://sdss.org/ : SDSS Home Page Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 20 A20 --- QSO QSO name (J2000) 22- 25 I04 --- Plate SDSS spectroscopic plate 27- 31 I5 --- MJD SDSS Modified Julian Date 33- 35 I03 --- Fiber SDSS spectroscopic fiber 37- 40 F4.2 --- zem QSO emission redshift 42- 46 F5.3 --- zabs DLA absorption redshift 48 I1 --- Flag [0/2] Lines used for absorption redshift (1) 50- 54 F5.2 [cm-2] logN(HI) HI column density 56- 59 F4.2 [cm-2] e_logN(HI) Error on HI column density 61- 64 F4.2 0.1nm WCII1334 ? Rest equivalent width of CII 1334 66- 69 F4.2 0.1nm e_WCII1334 ? Error on WCII1334 or upper-limit (2) 71- 74 F4.2 0.1nm WNiII1370 ? Rest equivalent width of NiII 1370 76- 79 F4.2 0.1nm e_WNiII1370 ? Error on WNiII1370 or upper-limit (2) 81- 84 F4.2 0.1nm WSiII1526 ? Rest equivalent width of SiII 1526 86- 89 F4.2 0.1nm e_WSiII1526 ? Error on WSiII1526 or upper-limit (2) 91- 94 F4.2 0.1nm WFeII1608 ? Rest equivalent width of FeII 1608 96- 99 F4.2 0.1nm e_WFeII1608 ? Error on WFeII1608 or upper-limit (2) 101-104 F4.2 0.1nm WAlII1670 ? Rest equivalent width of AlII 1670 106-109 F4.2 0.1nm e_WAlII1670 ? Error on WAlII1670 or upper-limit (2) 111-114 F4.2 0.1nm WSiII1808 ? Rest equivalent width of SiII 1808 116-119 F4.2 0.1nm e_WSiII1808 ? Error on WSiII1808 or upper-limit (2) 121-124 F4.2 0.1nm WZnII2026 ? Rest equivalent width of ZnII 2026 (3) 126-129 F4.2 0.1nm e_WZnII2026 ? Error on WZnII2026 or upper-limit (2)(3) 131-134 F4.2 0.1nm WFeII2344 ? Rest equivalent width of FeII 2344 136-139 F4.2 0.1nm e_WFeII2344 ? Error on FeII2344 or upper-limit (2) 141-144 F4.2 0.1nm WFeII2374 ? Rest equivalent width of FeII 2374 146-149 F4.2 0.1nm e_WFeII2374 ? Error on FeII2374 or upper-limit (2) 151-154 F4.2 0.1nm WFeII2382 ? Rest equivalent width of FeII 2382 156-159 F4.2 0.1nm e_WFeII2382 ? Error on FeII2382 or upper-limit (2) 161-164 F4.2 0.1nm WFeII2586 ? Rest equivalent width of FeII 2586 166-169 F4.2 0.1nm e_WFeII2586 ? Error on FeII2586 or upper-limit (2) 171-174 F4.2 0.1nm WFeII2600 ? Rest equivalent width of FeII 2600 176-179 F4.2 0.1nm e_WFeII2600 ? Error on FeII2600 or upper-limit (2) 181-184 F4.2 0.1nm WMgII2796 ? Rest equivalent width of MgII 2796 186-189 F4.2 0.1nm e_WMgII2796 ? Error on MgII2796 or upper-limit (2) 191-194 F4.2 0.1nm WMgII2803 ? Rest equivalent width of MgII 2803 196-199 F4.2 0.1nm e_WMgII2803 ? Error on MgII2803 or upper-limit (2)
Note (1): Flag for absorption redshift as follows: 0 = zabs from Ly-alpha 1 = zabs from CIV/SiIV 2 = zabs from low-ionisation metal lines. Note (2): 1σ error on the equivalent width in preceeding column, or, if no measurement of equivalent width (empty preceeding column), 1 σ upper-limit on the equivalent width Note (3): ZnII2026 is actually blended with MgI2026, hence the equivalent width quoted refers to the sum of equivalent widths.
Acknowledgements: Pasquier Noterdaeme, noterdaeme(at)iap.fr History: * 16-Oct-2009: Original version * 16-Jul-2010: Table3 corrected (new version from author)
(End) Pasquier Noterdaeme [IUCAA, India], Patricia Vannier [CDS] 12-Aug-2009
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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