J/ApJ/862/50 Origin of Metals around Galaxies. I. (Mas-Ribas+, 2018)
Origin of Metals around Galaxies.
I. Catalogs of metal-line absorption doublets from high-resolution quasar
spectra.
Mas-Ribas L., Riemer-Sorensen S., Hennawi J.F., Miralda-Escude J.,
O'Meara J.M., Perez-Rafols I., Murphy M.T., Webb J.K.
<Astrophys. J., 862, 50-50 (2018)>
=2018ApJ...862...50M 2018ApJ...862...50M (SIMBAD/NED BibCode)
ADC_Keywords: QSOs; Intergalactic medium; Redshifts; Spectra, optical;
Equivalent widths
Keywords: catalogs; intergalactic medium; large-scale structure of universe
line: identification; quasars: absorption lines
Abstract:
We present the first paper of the series Origin of Metals around
Galaxies, which aims to explore the origin of the metals observed in
the circumgalactic and intergalactic media. In this work we extract
and build catalogs of metal absorbers that will be used in future
analyses, and make our results publicly available to the community. We
design a fully automatic algorithm to search for absorption metal-line
doublets of the species CIV, NV, SiIV, and MgII in high-resolution
(R≥30000) quasar spectra without human intervention, and apply it to
the high-resolution and signal-to-noise ratio spectra of 690 quasars,
observed with the UVES and HIRES instruments. We obtain 5656 CIV
doublets, 7919 doublets of MgII, 2258 of SiIV, and 239 of NV,
constituting the largest high-resolution metal-doublet samples to
date, and estimate the dependence of their completeness and purity on
various doublet parameters such as equivalent width and redshift,
using real and artificial quasar spectra. The catalogs include
doublets with rest-frame line-equivalent widths down to a few mÅ,
all detected at a significance above 3σ, and covering the
redshifts between 1<z≤5, properties that make them useful for a wide
range of chemical evolution studies.
Description:
Our data are composed of four high-resolution quasar spectra data
sets: we use the continuum-normalized spectra of the 170 quasars in
the first public data release of the Keck Observatory Database of
Ionized Absorption toward Quasars (KODIAQ DR1;
O'Meara+ 2015, J/AJ/150/111), and those of the 130 additional quasars
incorporated in the second public data release (KODIAQ DR2;
O'Meara+ 2017, J/AJ/154/114). We also consider 414 and 71 quasars with
continuum-normalized spectra from observations with the Ultraviolet
and Visual Echelle Spectrograph (UVES) at the Very Large Telescope
(VLT), and the High Resolution Echelle Spectrometer (HIRES) at Keck,
respectively (Murphy+ 2003, J/MNRAS/345/609;
Murphy+ 2018, in preparation; King+ 2012, J/MNRAS/422/3370).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
qsos.dat 47 797 List of quasars; table added by CDS (from
all catalogs)
civ.dat 98 5656 CIV metal-line doublet catalog
mgii.dat 98 7919 MgII metal-line doublet catalog
nv.dat 98 239 NV metal-line doublet catalog
siiv.dat 98 2258 SiIV metal-line doublet catalog
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See also:
VII/270 : SDSS quasar catalog: tenth data release (Paris+, 2014)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
VII/279 : SDSS quasar catalog: twelfth data release (Paris+, 2017)
VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
J/MNRAS/345/609 : Variability of the fine-structure constant (Murphy+, 2003)
J/ApJ/676/262 : PKS1302-102 intergalactic absorption system (Cooksey+, 2008)
J/ApJ/708/868 : CIV candidates (Cooksey+, 2010)
J/ApJ/729/87 : SiIV absorption systems (Cooksey+, 2011)
J/MNRAS/422/3370 : Spatial variation in fine-structure constant (King+, 2012)
J/ApJ/763/37 : Metals in SDSS QSOs. I. 1.5<z<4.5 CIV abs. (Cooksey+, 2013)
J/ApJ/779/161 : MgII absorbers in 0.4<z<2.3 SDSS QSOs (Seyffert+, 2013)
J/AJ/150/111 : KODIAQ DR1 (O'Meara+, 2015)
J/AJ/154/114 : KODIAQ DR2 (O'Meara+, 2017)
Byte-by-byte Description of file: qsos.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- ID Identifier (JHHMMSS+DDMMSSA)
17- 18 I2 h RAh Hour of right ascension (J2000)
20- 21 I2 min RAm Minute of right ascension (J2000)
23- 27 F5.2 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- 47 A6 --- Cat Quasar sample from where the doublet was
obtained (1)
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Note (1): Quasar sample as follows:
HIRES = the High Resolution Echelle Spectrometer at Keck (see
Murphy+ 2003, J/MNRAS/345/609 ; 68 occurrences)
KODIAQ = the Keck Observatory Database of Ionized Absorption toward Quasars
(KODIAQ DR1; O'Meara+ 2015, J/AJ/150/111), and those of the 130
additional quasars incorporated in the second public data release
(KODIAQ DR2; O'Meara+ 2017, J/AJ/154/114);
in Simbad (337 occurrences)
UVES = the Ultraviolet and Visual Echelle Spectrograph at the VLT (see
King+ 2012, J/MNRAS/422/3370 ; 392 occurrences)
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Byte-by-byte Description of file: civ.dat mgii.dat nv.dat siiv.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- ID Identifier (JHHMMSS+DDMMSSA)
17- 18 I2 h RAh Hour of right ascension (J2000)
20- 21 I2 min RAm Minute of right ascension (J2000)
23- 27 F5.2 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 --- zavg [0.09/5.1] Weighted-mean redshift of the doublet
48- 54 F7.2 10-13m EW-l [0.2/4971] Equivalent width of the left-hand
side line in the doublet (in mÅ)
56- 61 F6.2 10-13m e_EW-l [0.06/112] EW-l uncertainty
63- 69 F7.2 10-13m sig-l [3/3174] Significance of the detection for
the left-hand side line in the doublet
(in mÅ)
71- 77 F7.2 10-13m EW-r [0.03/1754] Equivalent width of the right-hand
side line in the doublet (in mÅ)
79- 83 F5.2 10-13m e_EW-r [0.06/97] EW-r uncertainty
85- 91 F7.2 10-13m sig-r [1/2984] Significance of the detection for the
right-hand side line in the doublet (in mÅ)
93- 98 A6 --- Cat Quasar sample from where the doublet was
obtained (KODIAQ, UVES or HIRES)
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History:
Downloaded from http://github.com/lluism/OMG/
(End) Emmanuelle Perret [CDS] 03-Oct-2023