期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 452, 期 2, 页码 2195-2207出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv1409
关键词
stars: evolution; supergiants; supernovae: general; supernovae: individual: SN 1997bs
资金
- NASA [NAS 5-26555]
- [GO-13477]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1515876] Funding Source: National Science Foundation
We present new, late-time Hubble Space Telescope and Spitzer Space Telescope observations of the archetypal supernova (SN) impostor SN 1997bs. We show that SN 1997bs remains much fainter than its progenitor, posing a challenge for the canonical picture of late-time obscuration by dust forming in a shell ejected during the transient. The possibility that the star survived cloaked behind a dusty, steady wind is also disfavoured. The simplest explanation is that SN 1997bs was a subluminous Type IIn SN, although it is currently impossible to rule out the possibility that the star survived either behind an obscuring dusty shell greater than or similar to 1 M-circle dot or with a significantly decreased intrinsic luminosity. Continued monitoring of the system is the most promising means of ultimately resolving the question.
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