The unusual supernova 1987A |
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Authors: | Luis A Milone S Paolantonio V Briggi D Mendicini E Minniti |
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Institution: | (1) Observatorio Astronómico, Universidad Nacional de Córdoba, Córdoba, Argentina;(2) ATEL, Santa Fe, Argentina |
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Abstract: | V andB light curves for supernova 1987A covering some 120 days from the outburst are here presented and discussed; they are shown to be rather atypical for a type II supernova. The absolute magnitude at maximum brightness is also analyzed, and after applying a correction for interstellar absorption we obtainM
V, max, 0
=–16.1, andM
B, max, 0
=–14.7; is is then concluded that 1987A is a supernova quite fainter than average. A comparison with other known supernova is made and some similarity is found with peculiar objects such as 1948B in NGC 6946, and probably, 1909 A in M 101.Research supported in part by SECyT and CONICOR. |
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