Ejecta Masses in Type Ia Supernovae—Implications for the Progenitor and the Explosion Scenario*
Year: 2024
Type: article
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.
Authors: Zsófia Bora, Réka Könyves-Tóth, József Vinkó, Dominik Bánhidi, Imre Barna Bíró, K. Azalee Bostroem, Attila Bódi, Jamison Burke, István Csányi, Borbála Cseh, Joseph Farah, Alexei V. Filippenko, Tibor Hegedüs, Daichi Hiramatsu, Ágoston Horti-Dávid, D. Andrew Howell, Saurabh W. Jha, Csilla Kalup, Máté Krezinger, Levente Kriskovics, Curtis McCully, Megan Newsome, András Ordasi, Estefania Padilla Gonzalez, András Pál, Craig Pellegrino, Bálint Seli, Ádám Sódor, Zsófia Marianna Szabó, Olivér Norton Szabó, Róbert Szakáts, Tamás Szalai, Péter Székely, Giacomo Terreran, Vázsony Varga, Krisztián Vida, Xiaofeng Wang, J. Craig Wheeler
Institutions: Eötvös Loránd University, Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences, University of Szeged, The University of Texas at Austin, University of Arizona, Las Cumbres Observatory Global Telescope Network, University of California, Santa Barbara, University of California, Berkeley, Center for Astrophysics Harvard & Smithsonian, The NSF AI Institute for Artificial Intelligence and Fundamental Interactions, Rutgers, The State University of New Jersey, University of St Andrews, Scottish Universities Physics Alliance, Max Planck Institute for Radio Astronomy, Beijing Planetarium, Beijing Academy of Science and Technology, Tsinghua University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,165
Funders: School of Earth and Environmental Sciences, University of St Andrews, 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
Awards: G104587016, G134384773, G1794428649, G1943662793, G2190636616, G2275909756, Collaborative Research: Searching for the Expelled Envelope of Stripped-Envelope Supernovae, G2890494086, G2897167732, G298428782, G3743470659, G3919879982, G4021427475, G4581537389, Speeding up the messenger: immediate detection of multimessenger transients with Las Cumbres Observatory, G5519330468, G6340528518, G6874394419, G6943664901, G7208144342, G7321118147, G7331554726, G7339330145, G7483388087, G7489253783, G7682328652, G7694217703, G7917496354, G804656356, G8243417788, G8414750800, G8787842239, G926811402, Establishing a Templeton LSST Early-Career Research Fellowship, Revealing Supernova Progenitors with Las Cumbres Observatory, G993751968
OpenAlex ID: W4402240217