What do We Learn from IRAC Observations of Galaxies at 2<z<3.5?

Details What do We Learn from IRAC Observations of Galaxies at 2<z<3.5? What do We Learn from IRAC Observations of Galaxies at 2<z<3.5?

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..379..356w&link_type=abstract

Cosmic Frontiers ASP Conference Series, Vol. 379, proceedings of the conference held 31 July-4 August 2006 at Durham University,

Computer Science

Scientific paper

We study how IRAC helps to constrain the stellar populations of high redshift galaxies. A rest-frame U-V versus V-J diagram is a powerful diagnostic to distinguish dusty red galaxies from red galaxies with evolved stellar populations. The mass, age and extinction uncertainties are reduced more for red than for blue galaxies when including IRAC. The most massive galaxies at high redshift have red rest-frame U-V colors compared to lower mass galaxies.

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