Radio emission from supernovae. I - One to twelve year old supernovae

Details Radio emission from supernovae. I - One to twelve year old supernovae Radio emission from supernovae. I - One to twelve year old supernovae

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...336..421w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 336, Jan. 1, 1989, p. 421-428.

Astronomy and Astrophysics

Astrophysics

58

Main Sequence Stars, Radio Emission, Stellar Mass Ejection, Supernova Remnants, Very Large Array (Vla), Centimeter Waves, Flux Density, Radio Telescopes, Stellar Envelopes

Scientific paper

All recorded optical supernovae brighter than 14.0 mag from SN 1970A to SN 1981A were observed in May 1982 using VLA at 6 cm. Apart from the known radio supernovae (SN 1970G, SN 1979C, and SN 1980K), radio emissions were not detected from any of the objects to a limit of about 0.5 mJy. Limits on mass-loss rates from the presupernova systems are established. It is found that Type Ia Sns originate in systems which contain very little circumstellar material at the time of explosion. These systems are very different from those which originate Type Ib Sns. With some exceptions, Type II SNs originate with the high presupernova mass-loss rates expected from red supergiant progenitors with original main-sequence masses greater than about 8 solar masses.

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