Marked Correlations between Semi-analytical Models and SDSS

Details Marked Correlations between Semi-analytical Models and SDSS Marked Correlations between Semi-analytical Models and SDSS

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010acasn..51...34y&link_type=abstract

Acta Astronomica Sinica, vol. 51, no. 1, p. 34-41

Astronomy and Astrophysics

Astronomy

Galaxies: Fundamental Parameters, Astronomical Data Bases: Miscellaneous, Methods: Analytical

Scientific paper

Using the "marked" correlation function, the dependence of galaxy clustering on their properties is investigated. We measured the color-, star formation rate- and stellar mass-weighted or "marked" correlation functions in the SDSS DR4 galaxy catalog, and then compare with the mock catalog produced by the semi-analytical model (SAM) of galaxy formation. It is shown that the SAM can be in good agreement with the SDSS observations while taking the color and stellar mass as marked galactic properties. However, one striking feature revealed by the SDSS sample is the independence of the galaxy clustering on the star formation rate, which shows a significant discrepancy with what predicted by the SAM, and it remains a worthy issue for the further study.

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