Present and near term Extragalactic Surveys

Details Present and near term Extragalactic Surveys Present and near term Extragalactic Surveys

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21112102h&link_type=abstract

American Astronomical Society, AAS Meeting #211, #121.02; Bulletin of the American Astronomical Society, Vol. 39, p.951

Astronomy and Astrophysics

Astronomy

Scientific paper

Submillimetre obsertvations have revolutionized our understanding of
the star formation history of the universe, pointing to an epoch of
very rapid star formation at the time of assembly of the largest
galaxies. To date, surveys have only uncovered a few hundred
submillimetre-detected starburst galaxies because of the small areas
surveyed and the very rapidly falling flux distribution. The data are
sufficient to make the importance of these large galaxies clear, but
their relation to present day galaxies, their AGN fraction and the
mechanisms which trigger the starbursts remain unresolved. Progress
is expected from a new suite of instruments such as BLAST, SCUBA2,
SPIRE, and AzTEC which have taken advantage of a revolution in
submillimetre array technology to provide a new level of both
sensitivity and area coverage. In this talk I will review what we have
learned to date and what we expect to learn from these newest surveys,
many of which already have data. Rapid progress in understanding the
history of star formation in massive galaxies is expected in the
coming 24 months. The number of galaxies studied will increase by
orders of magnitude and the star-formation rate limits of the surveys
will drop dramatically. However, measuring the submillimetre
signature of star formation at redshift three from a galaxy the size
of the Milky Way will remain beyond the reach of the current crop of
surveys.

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