Confusion-limited 1. 49-GHz VLA survey centered on alpha = 13 h 00 m 37 s, delta = + 30 deg 34 arcmin

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Astron. J.; (United States)

OSTI ID:5733790

Mitchell, K J; Condon, J J

A deep VLA map at alpha = 13 h 00 m 37 s and delta = +30 deg 34 arcmin was made using the VLA at 1.49 GHz. Positions, flux densities, and angular sizes were measured from Gaussian fits to sources with map peak flux densities of 70 micro-Jy or more. A Palomar Schmidt IIIa-J plate was used to make position-coincidence optical identifications of these sources. The sky density of discrete sources stronger than 84 micro-Jy was determined by direct counting, while the density of sources with flux densities between 10 and 84 micro-Jy was estimated from the map P(D) distribution. The counts from this survey and a previous one are consistent within their statistical uncertainties. They were combined and converted to the nearby 1.4 GHz frequency. The 60 micron far-infrared counts of extragalactic sources can be predicted from an evolutionary model that fits the 1.4 GHz counts of radio sources in spiral galaxies. 20 references.

• Research Organization: Virginia Polytechnic Institute and State Univ., Blacksburg; National Radio Astronomy Observatory, Charlottesville, VA
• OSTI ID: 5733790
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 90; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
COORDINATES
COSMIC RADIO SOURCES
EARTH PLANET
ELECTROMAGNETIC RADIATION
FLUX DENSITY
GALAXIES
MAPS
MICROWAVE RADIATION
NORTHERN HEMISPHERE
PLANETS
RADIATIONS
SIZE
SPIRAL CONFIGURATION