Abstract
White dwarf coalescence models for type Ia supernovae (SNe Ia) have been recently proposed [1,2] as an alternative to the standard scenario in which a white dwarf accretes hydrogen rich material from a companion star. The need for new models appeared after it was realized that it might be difficult to increase the white dwarf mass up to the Chandrasekhar limit by accretion, at least in a sufficiently large number of systems to account for the SN Ia rate in the Galaxy. Indeed, mass loss during hydrogen and helium flashes and off-center helium detonation considerably restrict the range of values of the accretion rate, white dwarf and companion masses for which central carbon ignition is possible. Another difficulty is the risk of contamination of the spectrum by stripped hydrogen from the companion. Even if a small window of parameters giving a SN Ia explosion may remain (the theoretical modelling of all the processes involved in the presupernova evolution is too uncertain to draw definite conclusions) the search for a new class of progenitors may turn to be more promising.
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
R. F. Webbink: Ap. J. 277, 355 (1984).
I. Jr. Iben, A. V. Tutukov: Ap. J. (Suppl.) 54, 335 (1984).
A. Tornambe’: M.N.R.A.S. 239, 771 (1989).
R. A. Saffer, J. Liebert, E. W. Olszewski: Ap. J. 334, 947 (1988).
A. Bragaglia, L. Greggio, A. Renzini, S. D’Odorico: Messenger 52, 35 (1988).
E. L. Robinson, A. W. Shafter: Ap. J. 322, 296 (1987).
W. Benz, R. L. Bowers, A. G. W. Cameron, W. H. Press: preprint (1989).
J. P. Ostriker, J. W. K. Mark: Ap. J. 151, 1075 (1968).
R. Mochkovitch, M. Livio: Astr. Ap. 202, 211 (1989).
K. Nomoto, F. K. Thielemann, K. Yokoi: Ap. J. 286, 644 (1984).
Y. Kawai, H. Saio, K. Nomoto: Ap. J. 328, 207 (1988).
K. Nomoto, I. Jr. Iben: Ap. J. 297, 531 (1985).
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1991 Springer-Verlag New York, Inc.
About this paper
Cite this paper
Mochkovitch, R., Livio, M. (1991). SN Ia Models by Coalescence of Two Carbon-Oxygen White Dwarfs. In: Woosley, S.E. (eds) Supernovae. Santa Cruz Summer Workshops in Astronomy and Astrophysics. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-2988-9_84
Download citation
DOI: https://doi.org/10.1007/978-1-4612-2988-9_84
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4612-7748-4
Online ISBN: 978-1-4612-2988-9
eBook Packages: Springer Book Archive