Infrared Properties of High-z Galaxies

Details Infrared Properties of High-z Galaxies Infrared Properties of High-z Galaxies

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50387n&link_type=abstract

Spitzer Proposal ID #50387

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Scientific paper

We propose to compute the SEDs of high-redshift galaxies in cosmological hydrodynamic simulations using the spectrophotometric code GRASIL (Silva et al. 1998) with the wavelength coverage from 100 angstroms to 1 meter. The proposed method will improve the earlier work in the treatment of infrared (IR) emission from dust in high-z star-forming galaxies, by performing the calculation in a more ab initio fashion. Based on the computed SEDs and magnitudes in IRAC/MIPS bands, we will generate the light-cone output of galaxies by stitching numerous simulation output, and examine the number counts, redshift distribution, luminosity functions (LFs) and color-color diagrams by comparing with the Spitzer results directly. In particular, we will assess the validity of the recent claim by Lacey et al. that a top-heavy IMF is necessary to explain the strong evolution of mid-IR LF at 0

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