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SNe Ia AND THEIR ENVIRONMENT

Title: SNe Ia AND THEIR ENVIRONMENT: THEORY AND APPLICATIONS TO SN 2014J.
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Name(s): Dragulin, Paul, author
Hoeflich, Peter, author
Type of Resource: text
Genre: Text
Date Issued: 2016-02-10
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: We present theoretical semi-analytic models for the interaction of stellar winds with the interstellar medium (ISM) or prior mass loss implemented in our code SPICE, assuming spherical symmetry and power-law ambient density profiles and using the Pi-theorem. This allows us to test a wide variety of configurations, their functional dependencies, and to find classes of solutions for given observations. Here, we study Type Ia Supernova (SN Ia) surroundings of single and double degenerate systems, and their observational signatures. Winds may originate from the progenitor prior to the white dwarf (WD) stage, the WD, a donor star, or an accretion disk (AD). For M-Ch explosions, the AD wind dominates and produces a low-density void several light years across, surrounded by a dense shell. The bubble explains the lack of observed interaction in late time SN light curves for, at least, several years. The shell produces narrow ISM lines Doppler shifted by 10-100 km s(-1), and equivalent widths of approximate to 100 m angstrom and approximate to 1 m angstrom in cases of ambient environments with constant density and produced by prior mass loss, respectively. For SN2014J, both mergers and MCh mass explosions have been suggested based on radio and narrow lines. As a consistent and most likely solution, we find an AD wind running into an environment produced by the red giant wind of the progenitor during the pre-WD stage, and a short delay, 0.013-1.4 Myr, between the WD formation and the explosion. Our framework may be applied more generally to stellar winds and star formation feedback in large scale galactic evolution simulations.
Identifier: FSU_libsubv1_wos_000370370800026 (IID), 10.3847/0004-637X/818/1/26 (DOI)
Keywords: carnegie supernova project, chandrasekhar mass models, circumstellar material, circumstellar matter, hydrodynamics, large-magellanic-cloud, light echoes, progenitor system, rich matter, self-similar solutions, stars: winds, outflows, supernovae: general, supernovae: individual (SN2014J), white-dwarf models, x-ray-emission
Publication Note: The publisher’s version of record is available at http://www.dx.doi.org/10.3847/0004-637X/818/1/26
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000370370800026
Owner Institution: FSU
Is Part Of: Astrophysical Journal.
0004-637X
Issue: iss. 1, vol. 818

Choose the citation style.
Dragulin, P., & Hoeflich, P. (2016). SNe Ia AND THEIR ENVIRONMENT: THEORY AND APPLICATIONS TO SN 2014J. Astrophysical Journal. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000370370800026