HST Study of the Stellar Populations around SN 1987A

Details HST Study of the Stellar Populations around SN 1987A HST Study of the Stellar Populations around SN 1987A

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mcdg.proc..197r&link_type=abstract

The Magellanic Clouds and Other Dwarf Galaxies, Proceedings of the Bonn/Bochum-Graduiertenkolleg Workshop, held at the Physikzen

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Stellar Populations, Sn 1987A

Scientific paper

We present a short account of a study of the stellar population around SN 1987A based on an analysis of multi-band HST-WFPC2 images. The effective temperature, radius and reddening of each star were determined by fitting the measured broad band magnitudes to the ones calculated with model atmospheres. In addition, all stars with Hα equivalent widths in excess of 8 E were identified. An inspection to the HR diagram reveals the presence of several generations of stars, with ages between 1 and 150 Myr, superposed on a much older field population. The youngest stars in the field appear to be T Tau stars, characterized by strong H-alpha excesses. We conclude that SN 1987A is associated with a region in which star formation has been active over a long time interval and is still very active at present.

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