ADS Astronomy Abstract Service

Title:
A 4.85 GHz sky survey. 3: Epoch 1986 and combined (1986+1987) maps covering 0 deg less than delta less than +75 deg
Authors:
CONDON, J. J.; BRODERICK, J. J.; SEIELSTAD, G. A.; DOUGLAS, K.; GREGORY, P. C.
Affiliation:
AANational Radio Astronomy Observatory, Charlottesville, VA, US ABVirginia Polytechnic Inst. and State Univ., Blacksburg, VA, US ACUniv. of North Dakota, Grand Forks, ND, US ADUniv. of British Columbia, Vancouver, BC, Canada AEUniv. of British Columbia, Vancouver, BC, Canada
Journal:
The Astronomical Journal, vol. 107, no. 5, p. 1829-1833
Publication Date:
05/1994
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
BRIGHTNESS DISTRIBUTION, DECLINATION, MAPPING, RADIO ASTRONOMY, SKY SURVEYS (ASTRONOMY), CIRCULAR POLARIZATION, DATA INTEGRATION, DATA REDUCTION, RADIO TELESCOPES
Bibliographic Code:
1994AJ....107.1829C

Abstract

The National Radio Astronomy Observatory (NRAO) seven-beam receiver was used on the 91 m telescope in Green Bank, WV during 1986 November to survey the declination band 0 deg less than delta less than +75 deg at 4.85 GHz. We made sky maps from the 1986 data alone, primarily for comparison with the epoch 1987 maps (Condon et al., (1989)) to allow variability studies of a large, unbiased sample of sources selected at 4.85 GHz. The 1986 and 1987 data sets were combined, reedited, and mapped to yield maps fully covering the Omega = 6.07 sr region 0 deg less than delta less than +75 deg with noise and position uncertainties divided by nearly square root of two. The 1986 and combined (1986+1987) maps are available on Flexible Image Transport System (FITS)-format tapes.