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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 47 9 Parameters of the quasars linelist.dat 69 1325 List of all modelled Lyman alpha lines
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
Bytes Format Units Label Explanations
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
Byte-by-byte Description of file: linelist.dat
Bytes Format Units Label Explanations
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
Acknowledgements: Eckart Janknecht, ejanknecht(at)
(End) E. Janknecht [Hamburger Sternwarte], Patricia Vannier [CDS] 09-Aug-2006
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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