Galaxy-Galaxy Lensing Studies from COMBO-17
Abstract
We study the dark matter halos of galaxies with galaxy-galaxy lensing using the COMBO-17 survey. This survey offers an unprecedented data set for studying lens galaxies at z=0.2-0.7 including redshift information and spectral classification from 17 optical filters for objects brighter than R=24. So far, redshifts and classification for the lens galaxies have mainly been available for local surveys like the Sloan Digital Sky Survey (SDSS). Further, redshifts for the source galaxies have typically not been available at all but had to be estimated from redshift probability distribution which - for faint surveys - even had to be extrapolated.
- Publication:
-
Gravitational Lensing Impact on Cosmology
- Pub Date:
- June 2005
- DOI:
- 10.1017/S174392130500205X
- arXiv:
- arXiv:astro-ph/0409320
- Bibcode:
- 2005IAUS..225..249K
- Keywords:
-
- Astrophysics
- E-Print:
- 6 pages, 5 figures. To be published in the proceedings of IAU Symposium No. 225: The Impact of Gravitational Lensing on Cosmology, Y. Mellier and G. Meylan, eds