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Exploration of Aspherical Ejecta Properties in Type Ia Supernovae: Progenitor Dependence and Applications to Progenitor Classification

Leung, Shing-Chi and Diehl, Roland and Nomoto, Ken'ichi and Siegert, Thomas (2021) Exploration of Aspherical Ejecta Properties in Type Ia Supernovae: Progenitor Dependence and Applications to Progenitor Classification. Astrophysical Journal, 909 (2). Art. No. 152. ISSN 0004-637X. doi:10.3847/1538-4357/abc9c1.

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Several explosions of type Ia supernovae (SNe Ia) have been found to exhibit deviations from spherical symmetry upon closer inspection. Examples are the gamma-ray lines from SN 2014J as measured by INTEGRAL/SPI and morphology information from radioactive isotopes in older remnants such as Tycho. A systematic study of the effects of parameters such as ignition geometry and burning morphology in SNe Ia is still missing. We use a two-dimensional hydrodynamics code with postprocessing nucleosynthesis and simulate the double detonations in a sub-Chandrasekhar-mass carbon–oxygen white dwarf starting from the nuclear runaway in the accumulated He envelope toward disruption of the white dwarf. We explore potential variety through four triggering scenarios that sample main asymmetry drivers. We further investigate their global effects on the aspherical structure of the ejecta based on individual elements. We apply the results to the well-observed SN 2014J and other recently observed SN remnants in order to illustrate how these new observational data, together with other observed quantities, help to constrain the explosion and progenitors of SNe Ia.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle Paper
Leung, Shing-Chi0000-0002-4972-3803
Diehl, Roland0000-0002-8337-9022
Nomoto, Ken'ichi0000-0001-9553-0685
Siegert, Thomas0000-0002-0552-3535
Alternate Title:Exploration of Aspherical Ejecta Properties in Type Ia Supernova: Progenitor Dependence and Applications to Progenitor Classification
Additional Information:© 2021. The American Astronomical Society. Received 2019 September 23; revised 2020 October 28; accepted 2020 November 10; published 2021 March 12. This work has been supported by the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan. S.C.L. acknowledges support from grants HST-AR-15021.001-A and 80NSSC18K1017. K.N. acknowledges support from JSPS KAKENHI grant Nos. JP17K05382 and JP20K04024. T.S. is supported by the German Research Society (DFG-Forschungsstipendium SI 2502/1-1). This research was also supported by the DFG cluster of excellence "Origin and Structure of the Universe." This article is also supported through the "ChETEC" COST Action (CA16117).
Group:TAPIR, Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
NASA Hubble FellowshipHST-AR-15021.001-A
Japan Society for the Promotion of Science (JSPS)JP17K05382
Japan Society for the Promotion of Science (JSPS)JP20K04024
Deutsche Forschungsgemeinschaft (DFG)SI 2502/1-1
European Cooperation in Science and Technology (COST)CA16117
Subject Keywords:Type Ia supernovae; Hydrodynamical simulations; Gamma-rays; Chemical abundances; Explosive nucleosynthesis; Supernova remnants
Issue or Number:2
Classification Code:Unified Astronomy Thesaurus concepts: Type Ia supernovae (1728); Hydrodynamical simulations (767); Gammarays (637); Chemical abundances (224); Explosive nucleosynthesis (503); Supernova remnants (1667)
Record Number:CaltechAUTHORS:20201209-113413659
Persistent URL:
Official Citation:Shing-Chi Leung et al 2021 ApJ 909 152
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:106979
Deposited By: George Porter
Deposited On:09 Dec 2020 21:02
Last Modified:16 Nov 2021 18:58

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