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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey : measuring structure growth using passive galaxies

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Date
11/08/2012
Author
Tojeiro, R.
Percival, W. J.
Brinkmann, J.
Brownstein, J. R.
Eisenstein, D. J.
Manera, M.
Maraston, C.
McBride, C. K.
Muna, D.
Reid, B.
Ross, A. J.
Ross, N. P.
Samushia, L.
Padmanabhan, N.
Schneider, D. P.
Skibba, R.
Sánchez, A. G.
Swanson, M. E. C.
Thomas, D.
Tinker, J. L.
Verde, L.
Wake, D. A.
Weaver, B. A.
Zhao, G.-B.
Keywords
Surveys
Cosmology: observations
Dark energy
Large-scale structure of Universe
QB Astronomy
QC Physics
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Abstract
We explore the benefits of using a passively evolving population of galaxies to measure the evolution of the rate of structure growth between z = 0.25 and 0.65 by combining data from the Sloan Digital Sky Survey (SDSS) I/II and SDSS-III surveys. The large-scale linear bias of a population of dynamically passive galaxies, which we select from both surveys, is easily modelled. Knowing the bias evolution breaks degeneracies inherent to other methodologies, and decreases the uncertainty in measurements of the rate of structure growth and the normalization of the galaxy power spectrum by up to a factor of 2. If we translate our measurements into a constraint on σ8(z = 0) assuming a concordance cosmological model and general relativity (GR), we find that using a bias model improves our uncertainty by a factor of nearly 1.5. Our results are consistent with a flat Λ cold dark matter model and with GR.
Citation
Tojeiro , R , Percival , W J , Brinkmann , J , Brownstein , J R , Eisenstein , D J , Manera , M , Maraston , C , McBride , C K , Muna , D , Reid , B , Ross , A J , Ross , N P , Samushia , L , Padmanabhan , N , Schneider , D P , Skibba , R , Sánchez , A G , Swanson , M E C , Thomas , D , Tinker , J L , Verde , L , Wake , D A , Weaver , B A & Zhao , G-B 2012 , ' The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey : measuring structure growth using passive galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 424 , no. 3 , pp. 2339-2344 . https://doi.org/10.1111/j.1365-2966.2012.21404.x
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
DOI
https://doi.org/10.1111/j.1365-2966.2012.21404.x
ISSN
0035-8711
Type
Journal article
Rights
© 2012 The Authors, Monthly Notices of the Royal Astronomical Society © 2012 RAS. This work has been 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://doi.org/10.1111/j.1365-2966.2012.21404.x
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/16230

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