The NRAO VLA Sky Survey
J. J. Condon, W. D. Cotton, E. W. Greisen, R. A. Perley, Greg B Taylor, J. J. Broderick
The Astronomical Journal · 1998 · 5,781 citationsOpen access
Abstract
The NRAO VLA Sky Survey (NVSS) covers the sky north of J2000.0 δ = -40° (82% of the celestial sphere) at 1.4 GHz. The principal data products are (1) a set of 2326 4° × 4° continuum "cubes" with three planes containing Stokes I , Q , and U images plus (2) a catalog of almost 2 × 10 6 discrete sources stronger than S ≈ 2.5 mJy. The images all have θ = 45'' FWHM resolution and nearly uniform sensitivity. Their rms brightness fluctuations are σ ≈ 0.45 mJy beam -1 ≈ 0.14 K (Stokes I ) and σ ≈ 0.29 mJy beam -1 ≈ 0.09 K (Stokes Q and U ). The rms uncertainties in right ascension and declination vary from ≲1'' for the N ≈ 4 × 10 5 sources stronger than 15 mJy to 7'' at the survey limit. The NVSS was made as a service to the astronomical community. All data products, user software, and updates are being released via the World Wide Web as soon as they are produced and verified.
Cite this paper
Condon, J. J., Cotton, W. D., Greisen, E. W., Yin, Q. F., Perley, R. A., Taylor, G. B., & Broderick, J. J. (1998). The NRAO VLA sky survey. The Astronomical Journal, 115(5), 1693–1716. https://doi.org/10.1086/300337
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