The Unresolved Stellar Populations of Galaxies in the HUDF

Details The Unresolved Stellar Populations of Galaxies in the HUDF The Unresolved Stellar Populations of Galaxies in the HUDF

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20917103r&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #171.03; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We present preliminary results of a pixel-by-pixel stellar population study of well-resolved, intermediate redshift (z 1) galaxies in the Hubble Ultra-Deep Field. We fit the publicly available HST images from ACS and NICMOS with stellar population synthesis models (Bruzual & Charlot 2003) at each pixel for galaxies with measured spectroscopic redshifts. This allows us to simultaneously estimate the stellar mass, star formation rate, age, and extinction from the best-fit model SED at each pixel. Given the NICMOS pixel size (0.09 "/pix) and the typical galaxy redshift (z 1), we estimate these parameters on sub-kiloparsec linear scales in each galaxy.
Support for this work was provided by NASA through grant number AR-10974.01A from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.

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