Ejecta Masses in Type Ia Supernovae—Implications for the Progenitor and the Explosion Scenario*

Abstract The progenitor system(s) as well as the explosion mechanism(s) of thermonuclear (Type Ia) supernovae are long-standing issues in astrophysics. Here we present ejecta masses and other physical parameters for 28 recent Type Ia supernovae inferred from multiband photometric and optical spectroscopic data. Our results confirm that the majority of SNe Ia show observable ejecta masses below the Chandrasekhar-limit (having a mean M ej ≈ 1.1 ± 0.3 M ⊙ ), consistent with the predictions of recent sub- M Ch explosion models. They are compatible with models assuming either single- or double-degenerate progenitor configurations. We also recover a sub-sample of supernovae within 1.2 M ⊙ < M ej < 1.5 M ⊙ that are consistent with near-Chandrasekhar explosions. Taking into account the uncertainties of the inferred ejecta masses, about half of our SNe are compatible with both explosion models. We compare our results with those in previous studies, and discuss the caveats and concerns regarding the applied methodology.

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Publication Details

Journal
Publications of the Astronomical Society of the Pacific
Published
2024-09-01
DOI
https://doi.org/10.1088/1538-3873/ad6e18
Citations
3
Primary Topic
Gamma-ray bursts and supernovae
Type
article
Field-Weighted Citation Impact
0.99

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article

Ejecta Masses in Type Ia Supernovae—Implications for the Progenitor and the Explosion Scenario*

Zsófia Bora, I Bíró, A. Ordasi, Saurabh W. Jha et al.
3 citations
Publications of the Astronomical Society of the Pacific
Gamma-ray bursts and supernovae
0.99
article

Ejecta Masses in Type Ia Supernovae—Implications for the Progenitor and the Explosion Scenario*

Zsófia Bora, I Bíró, A. Ordasi, Saurabh W. Jha, C. Pellegrino, B. Cseh, Á. Sódor, Máté Krezinger, P. Székely, Csilla Kalup, József Vinkó, J. Burke, Zsófia Marianna Szabó, D. Hiramatsu, L. Kriskovics, A. V. Filippenko, Estefania Padilla Gonzalez, J. C. Wheeler, Réka Könyves-Tóth, István Csányi, B. Seli, Joseph Farah, Ágoston Horti-Dávid, K. Vida, G. Terreran, C. McCully, Tamás Szalai, Megan Newsome, András Pál, D. A. Howell, Attila Bódi, Róbert Szakáts, D. Bánhidi, Xiaofeng Wang, K. Azalee Bostroem, Olivér Norton Szabó, V. Varga, Tibor Hegedüs
article en
3 citations

Abstract

Abstract The progenitor system(s) as well as the explosion mechanism(s) of thermonuclear (Type Ia) supernovae are long-standing issues in astrophysics. Here we present ejecta masses and other physical parameters for 28 recent Type Ia supernovae inferred from multiband photometric and optical spectroscopic data. Our results confirm that the majority of SNe Ia show observable ejecta masses below the Chandrasekhar-limit (having a mean M ej ≈ 1.1 ± 0.3 M ⊙ ), consistent with the predictions of recent sub- M Ch explosion models. They are compatible with models assuming either single- or double-degenerate progenitor configurations. We also recover a sub-sample of supernovae within 1.2 M ⊙ < M ej < 1.5 M ⊙ that are consistent with near-Chandrasekhar explosions. Taking into account the uncertainties of the inferred ejecta masses, about half of our SNe are compatible with both explosion models. We compare our results with those in previous studies, and discuss the caveats and concerns regarding the applied methodology.

Publications of the Astronomical Society of the PacificVol. 136(9)
Rutgers, The State University of New Jersey (US), Eötvös Loránd University (HU), Las Cumbres Observatory Global Telescope Network (US), University of Arizona (US), University of California, Santa Barbara (US), University of St Andrews (GB), University of Szeged (HU), Beijing Planetarium (CN), Konkoly Observatory (HU), Université Bourgogne Franche-Comté (FR), Center for Astrophysics Harvard & Smithsonian (US), Scottish Universities Physics Alliance (GB), MTA-SZTE Research Group on Artificial Intelligence (HU), Max Planck Institute for Radio Astronomy (DE), The NSF AI Institute for Artificial Intelligence and Fundamental Interactions (US), The University of Texas at Austin (US), University of California, Berkeley (US), Tsinghua University (CN)
National Science Foundation, John Templeton Foundation, International Max Planck Research School for Environmental, Cellular and Molecular Microbiology, University of St Andrews, European Commission, Hungarian Scientific Research Fund, Magyar Tudományos Akadémia, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, International Max Planck Research School for Advanced Methods in Process and Systems Engineering, Magyarország Kormánya, Leibniz-Gemeinschaft, Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, National Research, Development and Innovation Office
Openalex Percentile: Top 23%
Gamma-ray bursts and supernovae
0.99
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