Manganese spread in Ursa Minor as a proof of sub-classes of type Ia supernovae

2017/08/30 by G. Cescutti, Gabriele Cescutti, Chiaki Kobayashi +1 · 1 citation
Physics and Astronomy · #Astro and Planetary Science #Astronomy and Astrophysical Research #Chandrasekhar limit #Gamma-ray bursts and supernovae #Low Mass #Nucleosynthesis #Supernova #Type (biology) #White dwarf #astro-ph.GA #astro-ph.HE #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201731398

published as A&A 607, A23 (2017) · 8 pages, 6 figures, accepted for publication in A&A

arxiv created 2017/08/30 · openalex publication_date 2017/09/04 · openalex created_date 2017/09/15 · arxiv updated 2017/11/01 · openalex updated_date 2026/08/05

Abstract

Context. Recently, new sub-classes of Type Ia supernovae (SNe Ia) were discovered, including SNe Iax. The suggested progenitors of SNe Iax are relatively massive, possibly hybrid C+O+Ne white dwarfs, which can cause white dwarf winds at low metallicities. There is another class that can potentially occur at low or zero metallicities; sub-Chandrasekhar mass explosions in single and/or double degenerate systems of standard C+O white dwarfs. These explosions have different nucleosynthesis yields compared to the normal, Chandrasekhar mass explosions.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• The Star Formation History and Spatial Distribution of Stellar Populations in the Ursa Minor Dwarf Spheroidal Galaxy
• The Evolution and Explosion of Massive Stars. II. Explosive Hydrodynamics and Nucleosynthesis
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• The observed properties of dwarf galaxies in and around the Local Group

Cited by

• Why Are Peculiar Type Ia Supernovae More Likely to Show the Signature of a Single-degenerate Model?