There is a consensus that type Ia supernovae (SNe Ia) arise from the thermonuclear explosion of white dwarf stars that accrete matter from a binary companion. However, direct observation of SN Ia progenitors is lacking, and the precise nature of the binary companion remains uncertain. A temporal series of high-resolution optical spectra of the SN Ia PTF 11kx reveals a complex circumstellar environment that provides an unprecedentedly detailed view of the progenitor system. Multiple shells of circumstellar material are detected, and the SN ejecta are seen to interact with circumstellar material starting 59 days after the explosion. These features are best described by a symbiotic nova progenitor, similar to RS Ophiuchi.
Tycho Brahe's 1572 Supernova as a Standard Type Ia as Revealed by Its Light-Echo SpectrumO Krause et al. Nature 456 (7222), 617-9. PMID 19052622.Type Ia supernovae are thermonuclear explosions of white dwarf stars in close binary systems. They play an important role as cosmological distance indicators and have led …
Detection of Circumstellar Material in a Normal Type Ia SupernovaF Patat et al. Science 317 (5840), 924-6. PMID 17626848.Type Ia supernovae are important cosmological distance indicators. Each of these bright supernovae supposedly results from the thermonuclear explosion of a white dwarf st …
No Signature of Ejecta Interaction With a Stellar Companion in Three Type Ia SupernovaeRP Olling et al. Nature 521 (7552), 332-5. PMID 25993963.Type Ia supernovae are thought to be the result of a thermonuclear runaway in carbon/oxygen white dwarfs, but it is uncertain whether the explosion is triggered by accret …
The Direct Identification of Core-Collapse Supernova ProgenitorsSD Van Dyk. Philos Trans A Math Phys Eng Sci 375 (2105). PMID 28923994. - ReviewTo place core-collapse supernovae (SNe) in context with the evolution of massive stars, it is necessary to determine their stellar origins. I describe the direct identifi …
Mass Loss and Stellar SuperwindsJS Vink. Philos Trans A Math Phys Eng Sci 375 (2105). PMID 28923999. - ReviewMass loss bridges the gap between massive stars and supernovae (SNe) in two major ways: (i) theoretically, it is the amount of mass lost that determines the mass of the s …
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