The Extended Baryon Oscillation Spectroscopic Survey: Measuring the Cross-correlation between the MgII Flux Transmission Field and Quasars and Galaxies at $z = 0.59$
Hélion Du Mas Des Bourboux
,
Kyle S. Dawson
,
Nicolás G. Busca
(1)
,
Michael Blomqvist
(2)
,
Victoria de Sainte Agathe
(1)
,
Christophe Balland
(1)
,
Julian E. Bautista
,
Julien Guy
,
Vikrant Kamble
,
Adam D. Myers
,
Ignasi Pérez-Ràfols
(2)
,
Matthew M. Pieri
(2)
,
James Rich
(3)
,
Donald P. Schneider
,
Anže Slosar
Hélion Du Mas Des Bourboux
- Fonction : Auteur
Kyle S. Dawson
- Fonction : Auteur
Julian E. Bautista
- Fonction : Auteur
- PersonId : 1373150
- ORCID : 0000-0002-9885-3989
- IdRef : 183909933
Julien Guy
- Fonction : Auteur
Vikrant Kamble
- Fonction : Auteur
Adam D. Myers
- Fonction : Auteur
Donald P. Schneider
- Fonction : Auteur
Anže Slosar
- Fonction : Auteur
Résumé
We present the first attempt at measuring the baryonic acoustic oscillations (BAOs) in the large-scale cross-correlation between the magnesium-II doublet (Mg ii) flux transmission field and the position of quasar and galaxy tracers. The Mg ii flux transmission continuous field at 0.3 < z < 1.6 is measured from 500,589 quasar spectra obtained in the Baryonic Oscillation Spectroscopic Survey (BOSS) and the extended BOSS (eBOSS). The positions of 246,697 quasar tracers and 1346,776 galaxy tracers are extracted from the Sloan Digital Sky Survey I and II, BOSS, and eBOSS catalogs. In addition to measuring the cosmological BAO scale and the biased matter density correlation, this study allows tests and improvements to cosmological Lyα analyses. A feature consistent with that of the BAOs is detected at a significance of Δχ 2 = 7.25. The measured Mg ii linear transmission bias parameters are b Mg ii(2796) (z = 0.59) = (−6.82 ± 0.54) × 10−4 and b Mg ii(2804) (z = 0.59) = (−5.55 ± 0.46) ×10−4, and the Mg i bias is b Mg i(2853) (z = 0.59) = (−1.48 ± 0.24) × 10−4. Their redshift evolution is characterized by the power-law index: γ Mg = 3.36 ± 0.46. These measurements open a new window toward using BAOs from flux transmission at z < 1 in the final eBOSS sample and in the upcoming sample from the Dark Energy Spectroscopic Instrument.
Domaines
Astrophysique [astro-ph]Format du dépôt | Notice |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
The Extended Baryon Oscillation Spectroscopic Survey: Measuring the Cross-correlation between the MgII Flux Transmission Field and Quasars and Galaxies at $z = 0.59$
|
Résumé |
en
We present the first attempt at measuring the baryonic acoustic oscillations (BAOs) in the large-scale cross-correlation between the magnesium-II doublet (Mg ii) flux transmission field and the position of quasar and galaxy tracers. The Mg ii flux transmission continuous field at 0.3 < z < 1.6 is measured from 500,589 quasar spectra obtained in the Baryonic Oscillation Spectroscopic Survey (BOSS) and the extended BOSS (eBOSS). The positions of 246,697 quasar tracers and 1346,776 galaxy tracers are extracted from the Sloan Digital Sky Survey I and II, BOSS, and eBOSS catalogs. In addition to measuring the cosmological BAO scale and the biased matter density correlation, this study allows tests and improvements to cosmological Lyα analyses. A feature consistent with that of the BAOs is detected at a significance of Δχ 2 = 7.25. The measured Mg ii linear transmission bias parameters are b Mg ii(2796) (z = 0.59) = (−6.82 ± 0.54) × 10−4 and b Mg ii(2804) (z = 0.59) = (−5.55 ± 0.46) ×10−4, and the Mg i bias is b Mg i(2853) (z = 0.59) = (−1.48 ± 0.24) × 10−4. Their redshift evolution is characterized by the power-law index: γ Mg = 3.36 ± 0.46. These measurements open a new window toward using BAOs from flux transmission at z < 1 in the final eBOSS sample and in the upcoming sample from the Dark Energy Spectroscopic Instrument.
|
Auteur(s) |
Hélion Du Mas Des Bourboux
, Kyle S. Dawson
, Nicolás G. Busca
1
, Michael Blomqvist
2
, Victoria de Sainte Agathe
1
, Christophe Balland
1
, Julian E. Bautista
, Julien Guy
, Vikrant Kamble
, Adam D. Myers
, Ignasi Pérez-Ràfols
2
, Matthew M. Pieri
2
, James Rich
3
, Donald P. Schneider
, Anže Slosar
1
LPNHE (UMR_7585) -
Laboratoire de Physique Nucléaire et de Hautes Énergies
( 1005074 )
- Barre 12-22, 1er étage 4 Place Jussieu 75252 Paris Cedex 05
- France
2
LAM -
Laboratoire d'Astrophysique de Marseille
( 179944 )
- Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13
- France
3
IRFU -
Institut de Recherches sur les lois Fondamentales de l'Univers
( 53946 )
- CEA Saclay
F-91191 Gif sur Yvette cedex
- France
|
Nom de la revue |
|
Date de publication |
2019
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Vulgarisation |
Non
|
Volume |
878
|
Page/Identifiant |
47
|
Numéro |
1
|
Langue du document |
Anglais
|
Collaboration/Projet |
|
Domaine(s) |
|
Projet(s) ANR |
|
Mots-clés |
en
distance scale, intergalactic medium, large-scale structure of universe, quasars: absorption lines
|
arXiv Id | 1901.01950 |
DOI | 10.3847/1538-4357/ab1d49 |
inSPIRE HEP | 1712451 |
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