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Radio Non-Detection of the Type II Supernova 2012hs in ESO 213-2

ATel #4667; S. D. Ryder (AAO), C. J. Stockdale (Marquette), A. Soderberg (Harvard)
on 22 Dec 2012; 05:47 UT
Credential Certification: Stuart Ryder (sdr@aao.gov.au)

Subjects: Radio, Supernovae

The young Type II Supernova 2012hs (CBET #3347) in the galaxy ESO 213-2 has been observed with the ATCA + CABB 2 GHz backend system on 2012 Dec 20.6 at a frequency of 18 GHz. No radio emission was detected at the supernova location, to a 3-sigma upper limit of 0.08 mJy. Adopting a host galaxy distance of 24 Mpc from NED, this implies an upper limit on the luminosity at 18 GHz of 5.5E25 erg/s/Hz. We would like to extend our thanks to the ATCA staff and to V. Kilborn for enabling these observations. The Australia Telescope Compact Array is part of the Australia Telescope which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO.