Details

Autor(en) / Beteiligte

• Shen, Yue
• McBride, Cameron K
• White, Martin
• Zheng, Zheng
• Myers, Adam D
• Guo, Hong
• Kirkpatrick, Jessica A
• Padmanabhan, Nikhil
• Parejko, John K
• Ross, Nicholas P

Titel

CROSS-CORRELATION OF SDSS DR7 QUASARS AND DR10 BOSS GALAXIES: THE WEAK LUMINOSITY DEPENDENCE OF QUASAR CLUSTERING AT z ~ 0.5

Ist Teil von

• The Astrophysical journal, 2013-12, Vol.778 (2), p.1-22

Ort / Verlag

United States

Erscheinungsjahr

2013

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We present the measurement of the two-point cross-correlation function (CCF) of 8198 Sloan Digital Sky Survey Data Release 7 quasars and 349,608 Data Release 10 CMASS galaxies from the Baryonic Oscillation Spectroscopic Survey at 0.3 < z < 0.9. Based on the clustering measurements, most quasars at z ~ 0.5 are not the descendants of their higher luminosity counterparts at higher redshift, which would have evolved into more massive and more biased systems at low redshift. The host halo mass distributions significantly overlap with each other for quasars at different luminosities, implying a poor correlation between halo mass and instantaneous quasar luminosity. We also find that the quasar HOD parameterization is largely degenerate such that different HODs can reproduce the CCF equally well, but with different satellite fractions and host halo mass distributions. These results highlight the limitations and ambiguities in modeling the distribution of quasars with the standard HOD approach.