A Unified Catalog of Radio Objects Detected by FIRST, NVSS, WENSS, GB6, and SDSS

Details A Unified Catalog of Radio Objects Detected by FIRST, NVSS, WENSS, GB6, and SDSS A Unified Catalog of Radio Objects Detected by FIRST, NVSS, WENSS, GB6, and SDSS

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21113219k&link_type=abstract

American Astronomical Society, AAS Meeting #211, #132.19; Bulletin of the American Astronomical Society, Vol. 39, p.964

Other

Scientific paper

We have constructed a publicly-available unified catalog of radio sources detected by GB6 (6cm), FIRST (20cm), NVSS (20cm), WENSS (92cm), and SDSS DR6 (optical). The catalog has over 2 million objects detected by FIRST and/or NVSS and over 400,000 detected by both, and about 20,000 detected by all four radio surveys. We use the 20 cm radio fluxes to efficiently categorize sources into three classes of radio morphology. Radio color-magnitude-morphology distributions show a clear structure suggesting strong underlying physical correlations. Most radio sources have a steep radio spectral slope that shows a nearly constant rise from 6 to 92 cm, but sources unresolved on a 5 arcsec scale at 20 cm tend to have flat radio spectra. Roughly one third of sources have an optical counterpart, and so can be classified as galaxy (resolved) or quasar (unresolved). Compact radio sources with flat radio spectra are dominated by quasars, while other kinds of radio sources show similar numbers of galaxies and quasars. The observed radio spectral slope for quasars becomes flatter as optical luminosity increases; radio loudness and morphology for galaxies are correlated with their position in the optical color-luminosity diagram.

Affiliated with

Also associated with

No associations

Rating

A Unified Catalog of Radio Objects Detected by FIRST, NVSS, WENSS, GB6, and SDSS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Unified Catalog of Radio Objects Detected by FIRST, NVSS, WENSS, GB6, and SDSS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Unified Catalog of Radio Objects Detected by FIRST, NVSS, WENSS, GB6, and SDSS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1482091