Stellar and total mass in early-type lensing galaxies

Details Stellar and total mass in early-type lensing galaxies Stellar and total mass in early-type lensing galaxies

2005-03-07

arxiv.org/abs/astro-ph/0503168v1

Astrophys.J. 623 (2005) L5-L8

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, uses emulateapj. Accepted for publication in The Astrophysical Journal Letters

Scientific paper

10.1086/429995

For 18 well-observed gravitationally lensed QSOs, we compare new non-parametric mass profiles for the lensing galaxies with stellar-population models derived from published HST photometry. The large volume of parameter space searched -- with respect to the possible star formation histories -- allows us to infer robust estimates and uncertainties for the stellar masses. The most interesting results are: (1) the transition from little or no dark matter in the inner regions (

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