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J/ApJS/195/16      HST survey for Lyman limit systems. I.       (O'Meara+, 2011)

The Advanced Camera for Surveys+Wide Field Camera 3 Survey for Lyman limit systems. I. The data. O'Meara J.M., Xavier Prochaska J., Chen H.-W., Madau P. <Astrophys. J. Suppl. Ser., 195, 16 (2011)> =2011ApJS..195...16O
ADC_Keywords: Surveys ; Spectra, ultraviolet ; QSOs ; Photometry, SDSS Keywords: intergalactic medium - methods: data analysis - quasars: absorption lines - quasars: general - surveys - ultraviolet: general Abstract: We present a set of 71 quasars observed in the near ultraviolet with the PR200L prism on the Advanced Camera for Surveys and the G280 grism on the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. The quasars were selected from the Sloan Digital Sky Survey data to search for intervening Lyman limit system (LLS) absorption. The sample was subjected to the constraints that the quasars have AB magnitude g'<18.5, quasar emission redshift 2.3<zem<2.6, and lack strong BAL or z∼zem absorption. The median emission redshift of the sample is {bar}z=2.403. The data were all processed using custom data reduction pipelines, and the one-dimensional spectra have sufficient signal-to-noise ratio and resolution to easily identify absorption from LLS over the redshift range 1.2<z<2.5. The WFC3 data presented here are the first non-calibration spectra from the G280 grism. Description: The sample of quasars was chosen from the SDSS Data Release 5 (Cat. II/276; superseded by II/294). Our survey consists in part of 18 quasars observed in a snapshot program with the PR200L prism in the ACS on HST (Cycle 15, program ID 10878). In addition to the ACS sample, we observed 54 quasars with the UVIS G280 grism in the WFC3 on HST (Cycle 17, program ID 11594). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 57 100 Full input sample of HST QSOs
See also: B/hst : HST Archived Exposures Catalog (STScI, 2007) II/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007) J/ApJ/690/1181 : UV-bright quasars (Syphers+, 2009) J/AJ/137/3761 : Ultraviolet quasi-stellar objects (Bianchi+, 2009) J/AJ/133/1780 : GALEX/SDSS quasar catalog (Trammell+, 2007) http://www.stsci.edu/hst/acs : Advanced Camera for Surveys home page http://www.stsci.edu/hst/wfc3 : Wide Field Camera 3 home page http://cosmo.smcvt.edu/groups/hstacswfc3survey/ : HST ACS+WFC3 Survey page http://www.sdss.org/ : The Sloan Digital Sky Survey home page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 A4 --- --- [SDSS] 5- 13 A9 --- SDSS Quasar identification (HHMM+DDMM; J2000) 14 A1 --- f_SDSS [c-f] Other identification for SDSS quasar (1) 16- 17 I2 h RAh Hour of right ascension (J2000) 19- 20 I2 min RAm Minute of right ascension (J2000) 22- 27 F6.3 s RAs Second of right ascension (J2000) 29 A1 --- DE- Sign of declination (J2000) 30- 31 I2 deg DEd Degree of declination (J2000) 33- 34 I2 arcmin DEm Arcminute of declination (J2000) 36- 40 F5.2 arcsec DEs Arcsecond of declination (J2000) 42- 46 F5.3 --- zem SDSS quasar emission redshift 48- 52 F5.2 mag g'mag SDSS quasar AB g'-band magnitude 54- 57 A4 --- Inst HST instrument (2)
Note (1): Flag as follows: c = a.k.a. [HB89] 1333+459. d = a.k.a. LBQS 1334+0212. e = a.k.a. FBQS J1415+3706. f = a.k.a. KP77. Note (2): Quasars marked "ACS" were observed during Cycle 15, Program ID 10878, with the PR200L prism. Quasars marked "WFC3" were observed during Cycle 17, Program ID 11594, with the G280 grism.
History: From electronic version of the journal
(End) Emmanuelle Perret [CDS] 27-Sep-2011
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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