The bolometric light curve of SN1993J and the nature of its progenitor

Details The bolometric light curve of SN1993J and the nature of its progenitor The bolometric light curve of SN1993J and the nature of its progenitor

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993japa...14...53r&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 14, no. 2, p. 53-63.

Statistics

Computation

28

Light Curve, Stellar Evolution, Supernovae, Astronomical Photometry, Computational Astrophysics, Hydrogen, Stellar Envelopes, Stellar Luminosity, Stellar Mass Ejection

Scientific paper

We have constructed the bolometric light curve of SN1993J based on UBVRI(JHK) photometric data obtained from various sources and assuming A(V) = 0 and a distance modulus of 27.6. Effective temperatures and photosphere radius at various times have been obtained from detailed blackbody fits. The bolometric light curve shows two maxima. The short rise time to the second maximum, and the luminosities at the minimum and the second maximum are used to constrain the properties of the progenitor star. The total mass of the hydrogen envelope MH, in the star is found to be less than about 0.2 solar mass at the time of explosion, and the explosion ejected about 0.05 solar mass of Ni-56. Thin hydrogen envelope combined with a sufficient presupernova luminosity suggest that the exploding star was in a binary with a probable period range of 5-11 yr.

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