The Nature of the brightest Submm Source behind the Bullet Cluster

Details The Nature of the brightest Submm Source behind the Bullet Cluster The Nature of the brightest Submm Source behind the Bullet Cluster

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atnf.prop.3678l&link_type=abstract

ATNF proposal C2459, Semester: October, 2010

Physics

Surveys And Studies Of Distant Galaxies, Atca

Scientific paper

We prose to conduct C0 (J=1-0) and CO(J=3-2) observations of the brightest submm source behind the Bullet Cluster, hereafter Source #1. This highly magnified (>50 time) source at z=2.79.is, most likely, a low-mass starforming galaxy. The aim of the proposed observations is twofold. First, by resolving the Source #1 into its brightest components A and B, which has not been resolved inany the previous submm and mm observations, we will be able to impose tighter constraints on the Bullet's lens model. Second, we will use the CO observations to to derive physical parameters and improve upon the results derived from spectral observations of PAH and H2 using Spitzer IRS reported by Gonzalez et al. (2010). By modeling all the available observation using the synthesis code GRASIL we will be able to establish categorically the nature of Source #1. These observations will allow us to probe stellar formation in, probably, the most common galaxies at z~3. Our proposed observations will enable ATCA to make a pioneering contribution to the study of galaxy evolution before ALMA goes into operation.

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