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Title:
The SSA22 Proto-cluster at z = 3.09
Authors:
Chapman, S. C.; Baugh, C.
Affiliation:
AA(California Institute of Technology, Pasadena, CA, 91125, U.S.A.), AB(Department of Physics, University of Durham, South Rd, Durham DH1 3LE, UK)
Publication:
Clusters of Galaxies: Probes of Cosmological Structure and Galaxy Evolution, from the Carnegie Observatories Centennial Symposia. Carnegie Observatories Astrophysics Series. Edited by J.S. Mulchaey, A. Dressler, and A. Oemler, 2004. Pasadena: Carnegie Observatories, http://www.ociw.edu/ociw/symposia/series/symposium3/proceedings.html
Publication Date:
00/2004
Origin:
AUTHOR
Bibliographic Code:
2004cgpc.sympE...7C

Abstract

The measurement of 100 spectroscopic redshifts for the millimeter and submillimeter galaxies (Chapman et al. 2004, Ivison et al. 2004) marks a new era in the study of the most luminous galaxies in the early Universe. Rising to the challenge of this information infusion, we have developed a semi-analytic prescription of the SCUBA galaxies, which we use to assess the relative biasing of submm-luminous galaxies over a large volume. We hold our simulations up to the test of the SSA22 proto-cluster region at z = 3.09, finding that our predictions have been validated by the discovery of three SCUBA galaxies lying at z ˜3.1. Two of these SCUBA galaxies have also been detected in the CO molecule, verifying their large molecular gas mass, and setting a limit to their (large) dynamical mass. We then use the SSA22 cluster as a fiducial from which to begin a systematic calibration of the submm galaxy overdensities in our full survey.
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