A Possible Mass-Density and Star Formation Density relation at z=5.7

Details A Possible Mass-Density and Star Formation Density relation at z=5.7 A Possible Mass-Density and Star Formation Density relation at z=5.7

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.7720c&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #77.20; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

Using a narrow band filter centered at 815 Angstroms on Subaru/Suprime-Cam we find 110 galaxies at z=5.7 in a volume of 175 x 175 x 50 Mpc. These objects have a significant clustering signal, and several large structures are visible. Furthermore, the objects with the brightest UV continuum tend to be in dense regions. We derive ages of 0.1 Gyr, and masses of 109 Msun for the brightest objects detected with IRAC. A stacking analysis of the fainter objects yields a constant z-3.6um color down to z<28 indicating all objects are of a similar age. Assuming this constant age, the z band magnitude can be used as a proxy for both mass and star formation rate. This implies a mass-density and star formation density relation at z=5.7.

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