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

Rita Tojeiro, Will J. Percival, Jon Brinkmann, Joel R. Brownstein, Daniel J. Eisenstein, Marc Manera, Claudia Maraston, Cameron K. Mcbride, Demitri Muna, Beth Reid, Ashley J. Ross, Nicholas P. Ross, Lado Samushia, Nikhil Padmanabhan, Donald P. Schneider, Ramin Skibba, Ariel G. Sánchez, Molly E.C. Swanson, Daniel Thomas, Jeremy L. TinkerLicia Verde, David A. Wake, Benjamin A. Weaver, Gong Bo Zhao

Research output: Contribution to journalArticle

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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 σ 8(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.

Original languageEnglish (US)
Pages (from-to)2339-2344
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume424
Issue number3
DOIs
StatePublished - Aug 11 2012

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    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., ... 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, 424(3), 2339-2344. https://doi.org/10.1111/j.1365-2966.2012.21404.x