Astronomy and Astrophysics – Astronomy
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.5310l&link_type=abstract
American Astronomical Society, 192nd AAS Meeting, #53.10; Bulletin of the American Astronomical Society, Vol. 30, p.894
Astronomy and Astrophysics
Astronomy
1
Scientific paper
A recent VLA survey of two irregular galaxies resulted in the identification of 20 compact radio sources in NGC 4449 at 20 and 6 cm and 11 sources in IC 1613 at 6 cm. Flux densities and positions are presented along with the spectral indices for the radio sources in NGC 4449. The sample of compact radio sources in NGC 4449 is separated into supernova remnant and HII region candidates based on the spectral index. Both NGC 4449 and IC 1613 each have a previously detected radio supernova remnant. The flux densities of these supernova remnants obtained in this survey are compared to previously published values. Additionally, the radio images are compared with their respective Hα images which were taken at the National Astronomical Observatory in San Pedro Martir. The association of star formation regions and the radio sources is examined. The candidate supernova remnants in NGC 4449, a Magellanic irregular, are compared to a sample of 37 radio supernova remnants identified in the nearby spiral NGC 6946.
Duric Neb
Goss William Miller
Lacey Christina K.
Rosado Margarita
Valdez M.
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