Faint Radio Sources and Star Formation History
The centimeter-wave luminosity of local radio galaxies correlates well with their star formation rate. We extend this correlation to surveys of high-redshift radio sources to estimate the global star formation history. The star formation rate found from radio observations needs no correction for dus...
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| Main Authors | , , , |
|---|---|
| Format | Journal Article |
| Language | English |
| Published |
20.07.2000
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| Subjects | |
| Online Access | Get full text |
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| Abstract | The centimeter-wave luminosity of local radio galaxies correlates well with
their star formation rate. We extend this correlation to surveys of
high-redshift radio sources to estimate the global star formation history. The
star formation rate found from radio observations needs no correction for dust
obscuration, unlike the values calculated from optical and ultraviolet data.
Three deep radio surveys have provided catalogs of sources with nearly complete
optical identifications and nearly 60% complete spectroscopic redshifts: the
Hubble Deep Field and Flanking Fields at 12h+62d, the SSA13 field at 13h+42d,
and the V15 field at 14h+52d. We use the redshift distribution of these radio
sources to constrain the evolution of their luminosity function. The epoch
dependent luminosity function is then used to estimate the evolving global star
formation density. At redshifts less than one, our calculated star formation
rates are significantly larger than even the dust-corrected optically-selected
star formation rates; however, we confirm the rapid rise from z=0 to z=1 seen
in those surveys. |
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| AbstractList | The centimeter-wave luminosity of local radio galaxies correlates well with
their star formation rate. We extend this correlation to surveys of
high-redshift radio sources to estimate the global star formation history. The
star formation rate found from radio observations needs no correction for dust
obscuration, unlike the values calculated from optical and ultraviolet data.
Three deep radio surveys have provided catalogs of sources with nearly complete
optical identifications and nearly 60% complete spectroscopic redshifts: the
Hubble Deep Field and Flanking Fields at 12h+62d, the SSA13 field at 13h+42d,
and the V15 field at 14h+52d. We use the redshift distribution of these radio
sources to constrain the evolution of their luminosity function. The epoch
dependent luminosity function is then used to estimate the evolving global star
formation density. At redshifts less than one, our calculated star formation
rates are significantly larger than even the dust-corrected optically-selected
star formation rates; however, we confirm the rapid rise from z=0 to z=1 seen
in those surveys. |
| Author | Richards, E. A Windhorst, R. A Haarsma, D. B Partridge, R. B |
| Author_xml | – sequence: 1 givenname: D. B surname: Haarsma fullname: Haarsma, D. B organization: Calvin College – sequence: 2 givenname: R. B surname: Partridge fullname: Partridge, R. B organization: Haverford College – sequence: 3 givenname: R. A surname: Windhorst fullname: Windhorst, R. A organization: Arizona State – sequence: 4 givenname: E. A surname: Richards fullname: Richards, E. A organization: Arizona State |
| BackLink | https://doi.org/10.48550/arXiv.astro-ph/0007315$$DView paper in arXiv https://doi.org/10.1086/317225$$DView published paper (Access to full text may be restricted) |
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| Snippet | The centimeter-wave luminosity of local radio galaxies correlates well with
their star formation rate. We extend this correlation to surveys of
high-redshift... |
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| SubjectTerms | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics |
| Title | Faint Radio Sources and Star Formation History |
| URI | https://arxiv.org/abs/astro-ph/0007315 |
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