Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21931106t&link_type=abstract
American Astronomical Society, AAS Meeting #219, #311.06
Astronomy and Astrophysics
Astronomy
Scientific paper
I present first results from SWELLS, the Sloan Lenses WFC Edge-on Late-type Lens Survey. Lenses are first identified spectroscopically and visually from SDSS database and then confirmed via Hubble Space Telescope imaging. The ongoing survey comprises 20 spiral galaxies acting as strong lenses to date. Extensive follow-up is ongoing with the Keck Telescope to obtain spatially resolved kinematics, K-band AO images, and perform a joint lensing and dynamical analysis to reconstruct the dark and luminous mass distribution and properties of the stellar orbits. I discuss the results in terms of their implication for understanding the formation and evolution of spiral galaxies and the absolute normalization of their stellar initial mass function.
I acknowledge support from NASA through HST grants GO-12292 and GO-11978 and from the Packard Foundation.
SWELLS Team
Treu Tommaso
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