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J/ApJ/649/L61       SDSS J155810.16-003120.0 abundances      (O'Meara+, 2006)

The deuterium-to-hydrogen abundance ratio toward the QSO SDSS J155810.16-003120.0. O'Meara J.M., Burles S., Prochaska J.X., Prochter G.E., Bernstein R.A., Burgess K.M. <Astrophys. J., 649, L61-L65 (2006)> =2006ApJ...649L..61O
ADC_Keywords: QSOs ; Abundances, peculiar Keywords: cosmology: observations - quasars: absorption lines - quasars: individual (SDSS J155810.16-003120.0) Abstract: We present a measurement of the D/H abundance ratio in a metal-poor damped Lyα(DLA) system along the sight line of QSO SDSS 1558-0031. Description: We have obtained two high-resolution spectra of the z=2.83 quasar SDSS 1558-0031 using two different spectrographs, the MIKE echelle spectrograph on the 6.5m Magellan Clay telescope at Las Campanas, and the upgraded HIRES spectrometer on the 10m Keck I telescope on Mauna Kea. The MIKE spectrum was obtained on 2004 May 10 and covers the spectral range 3221-7420Å, with an exposure time of 3600s. The HIRES spectrum was taken on 2006 April 11 and covers the spectral range 3338-6200Å, with an exposure time of 4100s. Objects: -------------------------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------------------------- 15 58 10.16 -00 31 20.0 SDSS J155810.16-003120.0 = QSO B1555-0022 -------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 14 Ions observed in the z=2.70262 DLA towards SDSS1558-0031
See also: II/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007) : SDSS Home Page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Ion Ion name 8 A1 --- l_logN Limit flag on LogN 9- 13 F5.2 cm-2 logN Log of the column density 15- 18 F4.2 cm-2 e_logN ? Error in logN from VPFIT along 20 A1 --- f_logN [cd] Flag on logN (1) 22- 26 F5.2 km/s b ? Velocity width 28- 31 F4.2 km/s e_b ? Error in b 33- 40 F8.6 --- z Redshift 42- 49 F8.6 --- e_z Error in z 51 A1 --- l_[X/H] Limit flag on [X/H] 52- 56 F5.2 [-] [X/H] ? Log of the ion number abundance (2) 58- 89 A32 0.1nm Trans Transition(s) in Angstroms
Note (1): Flag on logN as follows: c = See text for detailed description of the values and errors for this ion. d = Column density measurement from the apparent optical depth method. Note (2): Where [X/H]=log(X/HI)-log(X/H)solar and we have considered only low-ion transitions and have not adopted ionization or depletion corrections.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 18-Jul-2008
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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