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- W1594944680 abstract "Evidence for a circumstellar shell surrounding SN 1987A is presented, based on UV observations. In May 1987, narrow (less than 1500 km/s) emission lines began to appear in the short wavelength IUE spectra (Wamsteker et al., 1987 and Kirshner et al., 1987) It is suggested that the narrow UV emission lines are due to photoionization of the circumstellar shell by the UV emission expected when the shock hits the surface of the star SK -69 deg 202. Because the gas is N-rich, has a low velocity, and may be located a light-year from the supernova, it is suggested that it was ejected from the progenitor during a red supergiant phase. Also, it is found that the hydrogen mass above a velocity of 6,000 km/s for SN 1987A is between 1 and 6 solar masses." @default.
- W1594944680 created "2016-06-24" @default.
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- W1594944680 date "1988-01-01" @default.
- W1594944680 modified "2023-09-27" @default.
- W1594944680 title "Ultraviolet observations of SN 1987A - Clues to mass loss" @default.
- W1594944680 hasPublicationYear "1988" @default.
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