Understanding The Nature Of Massive Starburst Galaxies Through Cosmic Times

Details Understanding The Nature Of Massive Starburst Galaxies Through Cosmic Times Understanding The Nature Of Massive Starburst Galaxies Through Cosmic Times

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934014r&link_type=abstract

American Astronomical Society, AAS Meeting #219, #340.14

Astronomy and Astrophysics

Astronomy

Scientific paper

Over the past decade, we have made great progress in studies of submillimeter galaxies (SMGs), which suggest that they represent a population of massive intense dusty starbursts at early cosmic times. SMGs are thought to be the progenitors of massive spheroidal galaxies at present day. Studies out to the largest cosmic distances are of key importance, because massive galaxies in the early universe are expected to grow in the densest peaks. This makes them ideal signposts of proto-cluster environments, back to the first billion years. Unfortunately, observational limitations in the past, in particular the requirement of a radio continuum counterpart and the requirement of optical redshifts (both of which are non-trivial to obtain for this extremely dusty galaxy population), have led to a considerable failure rate in correct identifications. These limitations thus yielded an incomplete understanding of the nature and physical properties of the SMG population as a whole. We here describe how direct identification of Herschel-selected SMGs through molecular and far-infrared fine structure emission lines help to overcome these limitations, yielding a more unbiased picture of the most intense massive starburst galaxies in the universe.

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