Radio observations of starburst galaxies

Details Radio observations of starburst galaxies Radio observations of starburst galaxies

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302..640s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 302, March 15, 1986, p. 640-649.

Astronomy and Astrophysics

Astronomy

65

Galactic Radiation, Radio Sources (Astronomy), Starburst Galaxies, Stellar Evolution, Astronomical Maps, Compact Galaxies, Galactic Nuclei, H Ii Regions, Luminosity, Mass Ratios, Nonthermal Radiation, Supernova Remnants

Scientific paper

Scaled array observations were made with the VLA at 1465 MHz and 4885 MHz of starburst regions having various morphologies. These are blue compact galaxies Mrk 59 and II Zw 40; starburst nuclei Mrk 52, 357, 603, 1089, 1259, and 1344; and giant H II regions NGC 595, 604, 5455, 5461, and 5471 in M33 and M101. Radio spectra are deconvolved into thermal and nonthermal components, which relate to the ionizing radiation from the starburst and the number of supernova remnants from the starburst. Starburst models based on various forms of the initial mass function are compared to the radio observations and to IRAS data. Results for starburst nuclei match expectations for a conventional IMF, but blue compact galaxies and giant H II regions show a deficiency of nonthermal radiation, implying a possible deficiency of supernova remnants.

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