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

被引：0

作者：

Bora, Zsofia ^{[1
,2
]}

Konyves-Toth, Reka ^{[1
,3
]}

Vinko, Jozsef ^{[1
,2
,3
,4
]}

Banhidi, Dominik ^{[5
]}

Biro, Imre Barna ^{[5
,6
]}

Bostroem, K. Azalee ^{[7
]}

Bodi, Attila ^{[1
]}

Burke, Jamison ^{[8
]}

Csanyi, Istvan ^{[5
]}

Cseh, Borbala ^{[1
,9
]}

Farah, Joseph ^{[8
,10
]}

Filippenko, Alexei V. ^{[11
]}

Hegedus, Tibor ^{[5
]}

Hiramatsu, Daichi ^{[12
,13
]}

Horti-David, Agoston ^{[1
,2
]}

Howell, D. Andrew ^{[8
,10
]}

Jha, Saurabh W. ^{[14
]}

Kalup, Csilla ^{[1
,2
]}

Krezinger, Mate ^{[1
,2
]}

Kriskovics, Levente ^{[1
]}

McCully, Curtis ^{[8
]}

Newsome, Megan ^{[8
,10
]}

Ordasi, Andras ^{[1
]}

Gonzalez, Estefania Padilla ^{[8
,10
]}

Pal, Andras ^{[1
]}

Pellegrino, Craig ^{[8
,10
]}

Seli, Balint ^{[1
,2
]}

Sodor, Adam ^{[1
]}

Szabo, Zsofia Marianna ^{[1
,15
,16
]}

Szabo, Oliver Norton ^{[1
,2
]}

Szakats, Robert ^{[1
]}

Szalai, Tamas ^{[3
]}

Szekely, Peter ^{[3
]}

Terreran, Giacomo ^{[8
]}

Varga, Vazsony ^{[1
,2
]}

Vida, Krisztian ^{[1
]}

Wang, Xiaofeng ^{[17
,18
,19
]}

Wheeler, J. Craig ^{[4
]}

机构：

[1] HUN REN CSFK Konkoly Observ, Konkoly Thege M ut 15-17, H-1121 Budapest, Hungary

[2] Eotvos Lorand Univ, Budapest, Hungary

[3] Univ Szeged, Inst Phys, Dept Expt Phys, Dom Ter 9, H-6720 Szeged, Hungary

[4] Univ Texas Austin, Dept Astron, 2515 Speedway, Stop C1400, Austin, TX 78712 USA

[5] Univ Szeged, Baja Astron Observ, Szeged Ut Kt 766, H-6500 Baja, Hungary

[6] ELKH SZTE Stellar Astrophys Res Grp, Szeged Ut Kt 766, H-6500 Baja, Hungary

[7] Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA

[8] Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA

[9] MTA ELTE Lendulet Momentum Milky Way Res Grp, Szombathely, Hungary

[10] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[11] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[12] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[13] NSF Inst Artificial Intelligence & Fundamental In, Cambridge, MA USA

[14] Rutgers State Univ, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA

[15] Univ St Andrews, Scottish Univ Phys Alliance SUPA, Sch Phys & Astron, North Haugh KY16 9SS, St Andrews, Scotland

[16] Max Planck Inst Radioastron, Auf Dem Hugel 69, D-53121 Bonn, Germany

[17] Tsinghua Univ, Phys Dept, Beijing, Peoples R China

[18] Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing, Peoples R China

[19] Beijing Acad Sci & Technol, Beijing Planetarium, Beijing, Peoples R China

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2024年 / 136卷 / 09期

基金：

芬兰科学院;

关键词：

LIGHT-CURVE SHAPES; IMPROVED DISTANCES; DETONATION MODELS; VIOLENT MERGERS; SNE IA; TIME; LUMINOSITY; CONSTRAINTS; SPECTRA; DIVERSITY;

D O I：

10.1088/1538-3873/ad6e18

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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) approximate to 1.1 +/- 0.3 M (circle dot)), 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 (circle dot) < M (ej) < 1.5 M (circle dot) 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.

引用

页数：29

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