Unveiling the Physics of the First Galaxies

Details Unveiling the Physics of the First Galaxies Unveiling the Physics of the First Galaxies

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50310c&link_type=abstract

Spitzer Proposal ID #50310

Computer Science

Scientific paper

We propose to observe 92 spectroscopically confirmed 4.54.5 bright enough to study in detail (Eyles et al. 2007; Yan et al. 2005) and the proposed observations are a factor of 5 more efficient than blank field surveys for these bright objects due to their low surface density. Very little is known about galaxies in this redshift range because they are faint and relatively rare. Also, the region of the galaxy Spectral Energy Distribution (SED) containing mass and age information is redshifted to the near and mid infrared where it is more difficult to measure. The proposed IRAC observations provide some of the key pieces of information required to study these high redshift objects. This project complements the extremely deep observations of z>5 galaxies in GOODS and UDF by probing the bright end and knee of the luminosity function as well as probing a large enough volume to reduce the effects of cosmic variance.

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