Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...310l..35u&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 310, Nov. 1, 1986, p. L35-L37. Research supported b
Astronomy and Astrophysics
Astrophysics
60
Binary Stars, Peculiar Stars, Stellar Evolution, Supernovae, Helium, Light Curve, Main Sequence Stars, Roche Limit, Stellar Mass, Stellar Mass Ejection
Scientific paper
Hot hydrogen-deficient binaries such as Upsilon Sgr and KS Per are suggested as the stars most likely to become Type Ib supernovae. These systems satisfy the preexplosion constraints imposed by Type Ib observations by not having any hydrogen in their atmospheres (explaining their spectra), being truncated at the Roche lobe (explaining their light curves), and having large main-sequence masses (explaining their presence in extreme Population I locations). Although none of those known seems to be in danger of exploding, a system with a current primary mass of about solar masses may do so by core collapse.
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