J/ApJ/736/42 HST QSO Catalog (Ribaudo+, 2011)
A Hubble space telescope study of Lyman limit systems: census and evolution.
Ribaudo J., Lehner N., Howk J.C.
<Astrophys. J., 736, 42 (2011)>
=2011ApJ...736...42R 2011ApJ...736...42R
ADC_Keywords: QSOs ; Spectra, ultraviolet
Keywords: intergalactic medium; quasars: absorption lines
Abstract:
We present a survey for optically thick Lyman limit absorbers at z<2.6
using archival Hubble Space Telescope observations with the Faint
Object Spectrograph and Space Telescope Imaging Spectrograph. We
identify 206 Lyman limit systems (LLSs), increasing the number of
cataloged LLSs at z<2.6 by a factor of ∼10.
Description:
The HST QSO Catalog combines archival observations of QSOs to provide
the largest source of HST observed QSOs in the literature. This
catalog was an essential component of the large survey for low
redshift Lyman limit systems produced by Ribaudo et al. Included in
our sample, but not reproduced here, are the QSO observations from
Bechtold et al. (2002, Cat. J/ApJS/140/143).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 98 312 QSOs observed with STIS and FOS and a few
observation details
stis/* . 230 Individual spectra from STIS
fos/* . 79 Individual spectra from FOS (Costar) (*b.dat)
and from FOS (Pre-Costar) (*c.dat)
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See also:
J/ApJS/140/143 : HST FOS spectral atlas (Bechtold+, 2002)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- QSO QSO name
12- 20 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
22- 30 F9.5 deg DEdeg Declination in decimal degrees (J2000)
32- 36 F5.3 --- z QSO Redshift
38- 46 F9.5 deg GLON Galactic Longitude of QSO
48- 56 F9.5 deg GLAT Galactic Latitude of QSO
58- 77 A20 --- FileName Spectrum file name
79- 82 A4 --- Inst Instrument used for observation (STIS or FOS)
84- 88 A5 --- Grat Grating used for observation (G140L, G160L or
G230L)
90- 98 A9 --- Note Observational note (COSTAR, PRECOSTAR, etc)
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Byte-by-byte Description of file: stis/*
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Bytes Format Units Label Explanations
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8- 16 F9.4 0.1nm lambda [1130/3170] Wavelength λ in Å
19- 32 E14.6 cW/m2/nm Flux Calibrated flux (in erg/cm2/s/Å)
35- 48 E14.6 cW/m2/nm e_Flux Mean error on Flux (in erg/cm2/s/Å)
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Byte-by-byte Description of file: fos/*
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Bytes Format Units Label Explanations
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7- 13 F7.2 0.1nm lambda [1350/2520] Wavelength λ in Å
15- 29 E15.8 cW/m2/nm Flux Calibrated flux (in erg/cm2/s/Å)
33- 45 E13.8 cW/m2/nm e_Flux Mean error on Flux (in erg/cm2/s/Å)
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Acknowledgements:
Joseph Ribaudo, jsribaud(at)utica.edu
(End) Joseph Ribaudo [Utica College], Patricia Vannier [CDS] 24-May-2012