A Survey of Compact Radio Sources in NGC 6946

Details A Survey of Compact Radio Sources in NGC 6946 A Survey of Compact Radio Sources in NGC 6946

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apjs..109..417l&link_type=abstract

Astrophysical Journal Supplement v.109, p.417

Astronomy and Astrophysics

Astronomy

28

Galaxies: Individual Ngc Number: Ngc 6946, Galaxies: Ism, Galaxies: Spiral, Radio Continuum: Galaxies, Ism: Supernova Remnants, Surveys

Scientific paper

We report observational results of a VLA 20 cm and 6 cm survey of the nearby spiral galaxy NGC 6946. The purpose of the survey is to identify compact radio sources in NGC 6946. We report the detection of 118 such sources. Using the spectral index to discriminate between thermal and nonthermal emission, 37 candidate sources have been identified as possible supernova remnants or background objects, 31 candidate sources have been identified as possible H II regions, and six sources have been identified with inverted spectra. The remaining sources were detected only at 20 cm. A catalog summarizing the properties of the radio sources is presented. The source positions, flux densities, and spectral indices are listed in the catalog. An atlas consisting of contour maps of all detected sources is presented.

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