NOAO >   Observing Info >   Approved Programs >   2012B-0185

Small NOAO Logo

Proposal Information for 2012B-0185


PI: Mariska Kriek, University of California, Berkeley, mkriek@berkeley.edu
Address: Astronomy Department, Hearst Field Annex, Berkeley, CA 94720, USA

CoI: Therese Jones, University of California, Berkeley

Title: Physical Properties of Galaxies as a Function of Spectral Type

Abstract: The high-quality photometry of the NEWFIRM Medium-Band Survey has allowed us to characterize the galaxy population at z=0.5-2.0 using a novel approach. We have divided the galaxy population at z=[0.5,2] into 32 different spectral types, and constructed a composite spectral energy distribution (SED) for each. These SEDs enable us to pre-select galaxies of particular type; by observing a fraction of the galaxies per SED type, we can systematiclly study spectral properties as a function of galaxy type. This is the most effcient method to obtain spectroscopic samples that span the entire galaxy population, with a well-understood selection. We propose to use Hectospec to observe rest- frame UV and optical emission and absorption features for 600 bright galaxies at 0.5<z<1.0. The Hectospec spectra will be combined with Gemini/GNIRS spectra which target the 1.3<z<1.7 galaxies in our sample. We will systematically investigate how the physical properties of galaxies correlate with SED type, stellar mass, and redshift. This study will give new insights into the correlations between stellar populations, metallicities, dust, AGN activity, and galactic outflows in galaxies.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2012B-0185

noaoprop-help@noao.edu

Small NOAO Logo