Progenitors of type Ia supernovae in elliptical galaxies
Although there is a nearly universal agreement that type Ia supernovae are associated with the thermonuclear disruption of a CO white dwarf, the exact nature of their progenitors is still unknown. The single degenerate scenario envisages a white dwarf accreting matter from a non-degenerate companion in a binary system. Nuclear energy of the accreted matter is released in the form of electromagnetic radiation or gives rise to numerous classical nova explosions prior to the supernova event. We show that combined X-ray output of supernova progenitors and statistics of classical novae predicted in the single degenerate scenario are inconsistent with X-ray and optical observations of nearby early type galaxies and galaxy bulges. White dwarfs accreting from a donor star in a binary system and detonating at the Chandrasekhar mass limit can account for no more than {approx}5% of type Ia supernovae observed in old stellar populations.
- OSTI ID:
- 21611627
- Journal Information:
- AIP Conference Proceedings, Vol. 1379, Issue 1; Conference: Conference on astrophysics of neutron stars 2010: A conference in honor of M. Ali Alpar, Izmir (Turkey), 2-6 Aug 2010; Other Information: DOI: 10.1063/1.3629478; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
COSMIC PHOTONS
COSMIC X-RAY BURSTS
GALAXIES
MASS
NOVAE
STAR ACCRETION
STATISTICS
SUPERNOVAE
WHITE DWARF STARS
BINARY STARS
BOSONS
COSMIC RADIATION
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DWARF STARS
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
EVOLUTION
IONIZING RADIATIONS
MASSLESS PARTICLES
MATHEMATICS
PHOTONS
PHYSICS
PRIMARY COSMIC RADIATION
RADIATIONS
STAR EVOLUTION
STARS
VARIABLE STARS