On the progenitor of sup ernova 1987A

M. Parthasarathy1 , David Branch, E. Baron, and David J. Jeffery
Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019
1 Indian Institute of Astrophysics, Koramangala, Bangalore - 560034, India

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 A previously unpublished ultralow­dispersion spectrum of Sand- uleak -69 202, the stellar progenitor of SN 1987A, is presented and the uncertain presupernova evolution of Sanduleak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

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