J/A+A/283/759 CIV QSO absorption systems (Petitjean+ 1994)
CIV QSO absorption systems and properties of galactic haloes at high redshift
Petitjean P., Bergeron J.
<Astron. Astrophys. 283, 759 (1994)>
=1994A&A...283..759P 1994A&A...283..759P
ADC_Keywords: QSOs; Spectroscopy; Redshifts
Keywords: cosmology: observations - quasars: absorption lines -
galaxies: evolution - galaxies: clustering - galaxies: ISM
Description:
High spectral resolution (FWHM = 0.6 or 0.35 Å) were obtained for
six high redshift QSOs, zem > 2.2, containing lines from 31
metal-rich absorption line systems amongst which 20 Civ doublets
split in subcomponents with velocity differences within a system
smaller than 400 km.s-1. Our survey has been combined with published
data at similar resolution and the resulting sample comprises 35
systems, 23 of which are splitted in a total of 87 subcomponents. The
mean redshift of the sample is = 2.65.
The observations were carried out at the F/8 Cassegrain focus of the
3.6m telescope at la Silla, between 1984 and 1989.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
qso.dat 33 10 Positions of the QSOs (from SIMBAD)
table2.dat 101 166 Absorption lines
table3.dat 48 99 Characteristic of the subcomponents
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Byte-by-byte Description of file: qso.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right Ascension J2000 (hours)
4- 5 I2 min RAm Right Ascension J2000 (minutes)
7- 10 F4.1 s RAs Right Ascension J2000 (seconds)
12 A1 --- DE- Declination J2000 (sign)
13- 14 I2 deg DEd Declination J2000 (degrees)
16- 17 I2 arcmin DEm Declination J2000 (minutes)
19- 20 I2 arcsec DEs Declination J2000 (seconds)
24- 32 A9 --- QSO Name of the QSO in tables 2 and 3
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- QSO QSO name
11- 17 F7.2 0.1nm lambda ? Heliocentric wavelength of absorption lines
29- 32 F4.2 0.1nm REW ? Rest equivalent width of absorption lines
38- 41 F4.2 0.1nm e_REW ? rms uncertainty on REW
43- 59 A17 --- Ion Identification of element
61- 67 F7.5 --- zabs ? Mean redshift
70 I1 --- n ? Component number
74- 77 F4.1 [cm-2] logN ? Logarithm of the column density
79- 82 F4.2 [cm-2] e_logN ? rms uncertainty on logN
84- 88 F5.1 km/s b ? Doppler parameter
91- 93 F3.0 km/s e_b ? rms uncertainty on b
95-101 F7.5 --- zc ? Redshift of the component
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- QSO QSO name
11 A1 --- r_QSO References (1)
13 I1 --- n Subcomponent number
15- 21 F7.5 --- z Redshift
23- 26 F4.0 km/s DeltaV Relative velocity
32- 36 F5.2 [cm-2] logN Logarithm of CIV column density
45- 48 F4.1 km/s b Doppler parameter for CIV
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Note (1): References:
a: Savaglio et al. 1994A&A...281..331S 1994A&A...281..331S
b: Pettini et al. 1983ApJ...273..436P 1983ApJ...273..436P
c: Carswell et al. 1984ApJ...278..486C 1984ApJ...278..486C
d: Wampler et al. 1993A&A...273...15W 1993A&A...273...15W
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History:
* 30-Jul-2001: qso.dat, bibcodes and description added.
(End) Patricia Bauer [CDS] 23-Feb-1994