Galaxy-Galaxy Weak Lensing and Intrinsic Alignments

Details Galaxy-Galaxy Weak Lensing and Intrinsic Alignments Galaxy-Galaxy Weak Lensing and Intrinsic Alignments

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.1617c&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #16.17; Bulletin of the American Astronomical Society, Vol. 33, p.1334

Astronomy and Astrophysics

Astronomy

Scientific paper

The mean shear profile of distant galaxies around foreground galaxies has been used to constrain the galaxy-mass correlation function through weak gravitational lensing. Here we examine whether faint foreground galaxies misidentified as background sources could contaminate these measurements through their intrinsic alignments. We use Nbody simulations of halos in a CDM cosmology, and find a significant signal. We then present an application to data from the Sloan Digital Sky Survey.

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