On the Progenitor of Supernova 1987A

Abstract

A previously unpublished ultralow-dispersion spectrum of Sanduleak -69 202, the stellar progenitor of SN 1987A, is presented and the uncertain presupernova evolution of Sanduleak -69 202 is discussed.

9 pages including 2 figures, accepted by Bull. Astron. Soc. India, a version with higher quality figures is available at http://nhn.ou.edu/~branch/87A.pdf