Cosmology Seminar Announcement Dr. Eric Gawiser Yale " The MUSYC Census of Protogalaxies at z=3 " Date: Tuesday, February 22, 2005 Time: 12:10 pm 416 Physics Abstract: Despite recent advances in the study of galaxy formation, the progenitors of typical galaxies like the Milky Way have yet to be identified. The Multiwavelength Survey by Yale-Chile (MUSYC) is investigating the star formation rate, stellar mass, and dark matter halo mass of each known type of high-redshift protogalaxy in a common region of the z=3 universe in order to separate physical properties from selection effects. These protogalaxies include AGN, Lyman break galaxies, Lyman alpha emitters, Damped Lyman alpha absorption systems, and evolved optical-break galaxies. MUSYC consists of deep optical (UBVRIz+NB5000) and near-infrared (JHK) imaging of four quarter-square-degree fields on the sky, centered on CDF-S, HDF-S, SDSS1030+05 and CW1255+01. Three of these fields have satellite coverage, including Chandra, XMM, GALEX, HST-ACS, and Spitzer-IRAC+MIPS. Detailed studies of color-selected sources are being performed through spectroscopy on VLT-VIMOS, Magellan-IMACS and Gemini-GNIRS. I will present initial results, including our public UBVRIz images and catalogs of the 33'x34' Extended HDF-S, spectra from Magellan+IMACS, and determinations of the Lyman break galaxy and Lyman alpha emitter correlation functions at z=3.

E-Mail: gawiser@astro.yale.edu
Web Page: http://www.astro.yale.edu/gawiser/