Environmental dependence of all five band luminosities for SDSS-III/boss galaxies in the SDSS DR9

 

Xin-Fa Deng¹ and Si-Yu Zou²

 

¹ School of Science, Nanchang University, Jiangxi, China, 330031 (xinfadeng@163.com).

² Nanchang Institute of Technology, Jiangxi, China, 330029.

 

Received 2013 December 16.
Accepted 2014 March 03.

 

RESUMEN

Utilizamos la muestra CMMASS con corrimientos al rojo entre 0.44 y 0.59 para investigar la dependencia ambiental de las luminosidades en cinco bandas de esta muestra proveniente del Sloan Digital Sky Survey Versión 9 (SDSS DR9). Para disminuir el electo de selección radial dividimos la muestra CMASS en diferentes submuestras con corrimientos al rojo agrupados en celdas con Δz = 0.01 y analizamos para cada submuestra la dependencia ambiental de las luminosidades en cinco bandas. Encontramos que todas las luminosidades están débilmente correlacionadas con el ambiente local.

 

ABSTRACT

Using the CMASS sample with a redshift of 0.44≤ z ≤0.59, we investigate the environmental dependence of all five band luminosities in the CMASS sample of the Sloan Digital Sky Survey Data Release 9 (SDSS DR9). To decrease the radial selection effect, we divide the CMASS sample into several subsamples with a redshift binning size of Δz = 0.01, and we analyze the environmental dependence of the five band luminosities of subsamples in each redshift bin. It is found that all five band luminosities are very weakly correlated with the local environment.

Key Words: galaxies: fundamental parameters — galaxies: statistics.

 

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ACKNOWLEDGMENTS

We thank the anonymous referee for many useful comments and suggestions. Our study was supported by the National Natural Science Foundation of China (NSFC, Grant 11263005).

Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy. The SDSS-III web site is http://www.sdss3.org/.

SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, University of Cambridge, University of Florida, the French Participation Group, the German Participation Group, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington, and Yale University.

 

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