Faint Radio Sources and Star Formation History

Details Faint Radio Sources and Star Formation History Faint Radio Sources and Star Formation History

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.600h&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

Faint extragalactic radio sources provide important information about global star formation history. Sensitive radio observations of the Hubble Deep Field and other fields have found that sub-mJy radio sources are predominantly associated with star formation activity rather than AGN. Radio observations of star forming galaxies have the advantage of being independent of dust content and extinction. We make a rough estimate of the redshift of peak star formation by using the FIR-radio correlation to compare the radio and FIR backgrounds. We also estimate a complete history of star formation by using the evolving radio luminosity function and the redshift distribution of sources to find the comoving luminosity density, and thus the star formation density, as a function of redshift.

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