Clustering of quasars in the first year of the SDSS-IV eBOSS survey : Interpretation and halo occupation distribution
Abstract
In current and future surveys, quasars play a key role. The new data will extend our knowledge of the Universe as it will be used to better constrain the cosmological model at redshift z > 1 via baryon acoustic oscillation and redshift space distortion measurements. Here, we present the first clustering study of quasars observed by the extended Baryon Oscillation Spectroscopic Survey. We measure the clustering of ~70 000 quasars located in the redshift range 0.9 < z < 2.2 that cover 1168 deg2. We model the clustering and produce highfidelity quasar mock catalogues based on the BigMultiDark Planck simulation. Thus, we use a modified (sub)halo abundance matching model to account for the specificities of the halo population hosting quasars. We find that quasars are hosted by haloes with masses~1012.7M⊙ and their bias evolves from 1.54 (z = 1.06) to 3.15 (z = 1.98). Using the current extended Baryon Oscillation Spectroscopic Survey data, we cannot distinguish between models with different fractions of satellites. The high-fidelity mock light-cones, including properties of haloes hosting quasars, are made publicly available.
Citation
Rodríguez-Torres , S A , Comparat , J , Prada , F , Yepes , G , Burtin , E , Zarrouk , P , Laurent , P , Hahn , C , Behroozi , P , Klypin , A , Ross , A , Tojeiro , R & Zhao , G-B 2017 , ' Clustering of quasars in the first year of the SDSS-IV eBOSS survey : Interpretation and halo occupation distribution ' , Monthly Notices of the Royal Astronomical Society , vol. 468 , no. 1 , pp. 728-740 . https://doi.org/10.1093/mnras/stx454
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
ISSN
0035-8711Type
Journal article
Rights
© 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1093/mnras/stx454
Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.