Blue supergiant progenitor models of type II supernovae

We show that within all the uncertainties that govern the process of Roche-lobe overflow in case Br-type massive binaries, it cannot be excluded that a significant fraction of them merge and become single stars. We demonstrate that at least some of them will spend most of their core helium-burning p...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2013-04, Vol.552, p.np-np
Main Authors: Vanbeveren, D., Mennekens, N., Van Rensbergen, W., De Loore, C.
Format: Article
Language:English
Subjects:
Astronomy
Beryllium
binaries: close
Binary stars
Explosions
Progenitors (astrophysics)
Stars
stars: evolution
stars: massive
Supergiant stars
Supernovae
supernovae: general
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Summary:We show that within all the uncertainties that govern the process of Roche-lobe overflow in case Br-type massive binaries, it cannot be excluded that a significant fraction of them merge and become single stars. We demonstrate that at least some of them will spend most of their core helium-burning phase as hydrogen-rich blue stars, populating the massive blue supergiant region and/or the massive Be-type star population. The evolutionary simulations lead us to suspect that these mergers will explode as luminous blue hydrogen-rich stars, and it is tempting to link them to at least some superluminous supernovae.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201321072