Clustering of quasars in the first year of the SDSS-IV eBOSS survey : Interpretation and halo occupation distribution
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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.
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 . DOI: 10.1093/mnras/stx454
Monthly Notices of the Royal Astronomical Society
© 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
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