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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey : luminosity and color dependence and redshift evolution

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Date
04/04/2013
Author
Guo, Hong
Zehavi, Idit
Zheng, Zheng
Weinberg, David H.
Berlind, Andreas A.
Blanton, Michael
Chen, Yanmei
Eisenstein, Daniel J.
Ho, Shirley
Kazin, Eyal
Manera, Marc
Maraston, Claudia
McBride, Cameron K.
Nuza, Sebastián E.
Padmanabhan, Nikhil
Parejko, John K.
Percival, Will J.
Ross, Ashley J.
Ross, Nicholas P.
Samushia, Lado
Sánchez, Ariel G.
Schlegel, David J.
Schneider, Donald P.
Skibba, Ramin A.
Swanson, Molly E. C.
Tinker, Jeremy L.
Tojeiro, Rita
Wake, David A.
White, Martin
Bahcall, Neta A.
Bizyaev, Dmitry
Brewington, Howard
Bundy, Kevin
da Costa, Luiz N. A.
Ebelke, Garrett
Malanushenko, Elena
Malanushenko, Viktor
Oravetz, Daniel
Rossi, Graziano
Simmons, Audrey
Snedden, Stephanie
Streblyanska, Alina
Thomas, Daniel
Keywords
Cosmology: observations
Cosmology: theory
Galaxies: distances and redshifts
Galaxies: halos
Galaxies: statistics
Large-scale structure of Universe
QB Astronomy
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Abstract
We measure the luminosity and color dependence and the redshift evolution of galaxy clustering in the Sloan Digital Sky Survey-III Baryon Oscillation Spectroscopic Survey Ninth Data Release. We focus on the projected two-point correlation function (2PCF) of subsets of its CMASS sample, which includes about 260,000 galaxies over ~3300 deg2 in the redshift range 0.43 < z < 0.7. To minimize the selection effect on galaxy clustering, we construct well-defined luminosity and color subsamples by carefully accounting for the CMASS galaxy selection cuts. The 2PCF of the whole CMASS sample, if approximated by a power-law, has a correlation length of r 0 = 7.93 ± 0.06 h –1 Mpc and an index of γ = 1.85 ± 0.01. Clear dependences on galaxy luminosity and color are found for the projected 2PCF in all redshift bins, with more luminous and redder galaxies generally exhibiting stronger clustering and steeper 2PCF. The color dependence is also clearly seen for galaxies within the red sequence, consistent with the behavior of SDSS-II main sample galaxies at lower redshifts. At a given luminosity (k + e corrected), no significant evolution of the projected 2PCFs with redshift is detected for red sequence galaxies. We also construct galaxy samples of fixed number density at different redshifts, using redshift-dependent magnitude thresholds. The clustering of these galaxies in the CMASS redshift range is found to be consistent with that predicted by passive evolution. Our measurements of the luminosity and color dependence and redshift evolution of galaxy clustering will allow for detailed modeling of the relation between galaxies and dark matter halos and new constraints on galaxy formation and evolution.
Citation
Guo , H , Zehavi , I , Zheng , Z , Weinberg , D H , Berlind , A A , Blanton , M , Chen , Y , Eisenstein , D J , Ho , S , Kazin , E , Manera , M , Maraston , C , McBride , C K , Nuza , S E , Padmanabhan , N , Parejko , J K , Percival , W J , Ross , A J , Ross , N P , Samushia , L , Sánchez , A G , Schlegel , D J , Schneider , D P , Skibba , R A , Swanson , M E C , Tinker , J L , Tojeiro , R , Wake , D A , White , M , Bahcall , N A , Bizyaev , D , Brewington , H , Bundy , K , da Costa , L N A , Ebelke , G , Malanushenko , E , Malanushenko , V , Oravetz , D , Rossi , G , Simmons , A , Snedden , S , Streblyanska , A & Thomas , D 2013 , ' The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey : luminosity and color dependence and redshift evolution ' , Astrophysical Journal , vol. 767 , no. 2 , 122 . https://doi.org/10.1088/0004-637X/767/2/122
Publication
Astrophysical Journal
Status
Peer reviewed
DOI
https://doi.org/10.1088/0004-637X/767/2/122
ISSN
0004-637X
Type
Journal article
Rights
© 2013. The American Astronomical Society. All rights reserved. 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://doi.org/10.1088/0004-637X/767/2/122
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  • University of St Andrews Research
URL
http://adsabs.harvard.edu/abs/2013ApJ...767..122G
URI
http://hdl.handle.net/10023/16262

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