A Definitive Test of the Nature of SN 1961V: Supernova vs. Luminous Blue Variable

Details A Definitive Test of the Nature of SN 1961V: Supernova vs. Luminous Blue Variable A Definitive Test of the Nature of SN 1961V: Supernova vs. Luminous Blue Variable

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9371c&link_type=abstract

HST Proposal ID #9371

Computer Science

Hst Proposal Id #9371

Scientific paper

The most massive stars evolve into luminous blue variables {LBVs} and end their lives in supernovae {SNe}. Studies of the late evolutionary stages of the most massive stars will aid our understanding of the chemical enrichment and stellar energy feedback in a galaxy. The final days of the most massive stars can be confusing, as LBV outbursts often mimic SN explosions. The nature of three SNe have been called into question: SN 1954J and SN 1997bs are most likely LBVs, but the nature of SN 1961V is still debatable. SN 1961V is a peculiar SN in a complex environment. Its decaying nonthermal radio emission is consistent with a radio supernova, while its optical light curve and initial expansion velocity suggest an LBV outburst similar to Eta Car. HST WFC1 images could not conclusively identify the LBV. SN 1961V is either a bona fide SN related to exotic hypernovae or failed supernovae, or a superluminous LBV that is the most massive star known. We request STIS observations, necessary for their high spatial resolution, to use emission lines to identify LBV candidates and to discriminate among LBV ejecta nebula, decades-old SN/SNR, and mature SNR that are present within 1" from SN 1961V.

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