M. Parthasarathy1 , David Branch, E. Baron, and David J. Jeffery
Abstract.
A previously unpublished ultralowdispersion spectrum of Sand-
uleak -69 202, the stellar progenitor of SN 1987A, is presented and the
uncertain
presupernova evolution of Sanduleak -69 202 is discussed.
Keywords: Supernovae: individual (SN
1987A) - techniques: ultralow -
dispersion spectra - Large Magellanic Cloud - supergiants - stars:
Sanduleak
-69 202
Homer L. Dodge Department of Physics and Astronomy, University of
Oklahoma, Norman,
OK 73019
1
Indian Institute of Astrophysics, Koramangala, Bangalore - 560034,
India