J/A+A/458/427 Lyman alpha absorbers in 0.5<z<1.9 QSOs (Janknecht+, 2006)
The evolution of Lyman alpha absorbers in the redshift range 0.5<z<1.9.
Janknecht E., Reimers D., Lopez S., Tytler D.
<Astron. Astrophys. 458, 427 (2006)>
=2006A&A...458..427J 2006A&A...458..427J
ADC_Keywords: QSOs ; Spectroscopy ; Redshifts
Keywords: cosmology: observations - intergalactic medium -
Abstract:
We investigate the evolution and the statistical properties of the
Lyα absorbers of the intergalactic medium (IGM) in the largely
unexplored redshift range z=0.5-1.9. We use high-resolution (R≥30000)
UV (STIS) and optical (VLT/UVES and Keck/HIRES) spectra of nine bright
quasars with zem<1.94. The Lyα lines detected in the lines of
sight (LOS) towards these quasars are evaluated with a software
package which determines simultaneously the quasar continuum and the
line profiles.
Description:
The table linelist.dat gives the full list of all 1325 modelled Lyman
alpha lines detected in the investigated QSO spectra with their fit
parameters and errors
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 47 9 Parameters of the quasars
linelist.dat 69 1325 List of all modelled Lyman alpha lines
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See also:
J/A+A/373/757 : Lyman-alpha forest of 3 QSOs (Kim+, 2001)
J/MNRAS/335/555 : Lyman-alpha forest of 5 QSOs (Kim+, 2002)
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)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- QSO QSO name
15- 16 I2 h RAh Right ascension (J2000) (from Simbad)
18- 19 I2 min RAm Right ascension (J2000) (from Simbad)
21- 25 F5.2 s RAs Right ascension (J2000) (from Simbad)
27 A1 --- DE- Declination sign (J2000) (from Simbad)
28- 29 I2 deg DEd Declination (J2000) (from Simbad)
31- 32 I2 arcmin DEm Declination (J2000) (from Simbad)
34- 37 F4.1 arcsec DEs Declination (J2000) (from Simbad)
39- 42 F4.2 --- zem Emission redshift
44- 47 F4.1 mag Bmag B magnitude
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Byte-by-byte Description of file: linelist.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- QSO Name of the QSO in which LOS the absorption line
was detected
15- 22 F8.3 0.1nm lambda Wavelength
24- 28 F5.3 0.1nm e_lambda rms uncertainty on wavelength error
31- 39 F9.7 --- z Redshift
42- 47 F6.3 cm-2 logN Logarithmus of column density
49- 53 F5.3 cm-2 e_logN rms uncertainty on logarithmus of column density
55- 61 F7.3 km/s b Doppler parameter
63- 69 F7.3 km/s e_b rms uncertainty on Doppler parameter
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Acknowledgements: Eckart Janknecht, ejanknecht(at)hs.uni-hamburg.de
(End) E. Janknecht [Hamburger Sternwarte], Patricia Vannier [CDS] 09-Aug-2006