Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26165
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, Ju-Jia | en_US |
dc.contributor.author | Wang, Xiao-Feng | en_US |
dc.contributor.author | Sasdelli, Michele | en_US |
dc.contributor.author | Zhang, Tian-Meng | en_US |
dc.contributor.author | Liu, Zheng-Wei | en_US |
dc.contributor.author | Mazzali, Paolo A. | en_US |
dc.contributor.author | Meng, Xiang-Cun | en_US |
dc.contributor.author | Maeda, Keiichi | en_US |
dc.contributor.author | Chen, Jun-Cheng | en_US |
dc.contributor.author | Huang, Fang | en_US |
dc.contributor.author | Zhao, Xu-Lin | en_US |
dc.contributor.author | Zhang, Kai-Cheng | en_US |
dc.contributor.author | Zhai, Qian | en_US |
dc.contributor.author | PIAN, Elena | en_US |
dc.contributor.author | Wang, Bo | en_US |
dc.contributor.author | Chang, Liang | en_US |
dc.contributor.author | Yi, Wei-Min | en_US |
dc.contributor.author | Wang, Chuan-Jun | en_US |
dc.contributor.author | Wang, Xue-Li | en_US |
dc.contributor.author | Xin, Yu-Xin | en_US |
dc.contributor.author | Wang, Jian-Guo | en_US |
dc.contributor.author | Lun, Bao-Li | en_US |
dc.contributor.author | Zheng, Xiang-Ming | en_US |
dc.contributor.author | Zhang, Xi-Liang | en_US |
dc.contributor.author | Fan, Yu-Feng | en_US |
dc.contributor.author | Bai, Jin-Ming | en_US |
dc.date.accessioned | 2020-06-22T14:22:05Z | - |
dc.date.available | 2020-06-22T14:22:05Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26165 | - |
dc.description.abstract | Photometric and spectroscopic observations of a slowly declining, luminous Type Ia supernova (SN Ia) SN 2011hr in the starburst galaxy NGC 2691 are presented. SN 2011hr is found to peak at {M}<SUB>B</SUB>=-19.84+/- 0.40 {mag}, with a postmaximum decline rate ∆m<SUB>15</SUB>(B) = 0.92 ± 0.03 mag. From the maximum-light bolometric luminosity, L=(2.30+/- 0.90)× {10}<SUP>43</SUP> {erg} {{{s}}}<SUP>-1</SUP>, we estimate the mass of synthesized <SUP>56</SUP>Ni in SN 2011hr to be M{(}<SUP>56</SUP>{Ni})=1.11+/- 0.43 {M}<SUB>☉ </SUB>. SN 2011hr appears more luminous than SN 1991T at around maximum light, and the absorption features from its intermediate-mass elements (IMEs) are noticeably weaker than those of the latter at similar phases. Spectral modeling suggests that SN 2011hr has IMEs of ∼0.07 {M}<SUB>☉ </SUB> in the outer ejecta, which is much lower than the typical value of normal SNe Ia (I.e., 0.3-0.4 {M}<SUB>☉ </SUB>) and is also lower than the value of SN 1991T (I.e., ∼0.18 {M}<SUB>☉ </SUB>). These results indicate that SN 2011hr may arise from a Chandrasekhar-mass white dwarf progenitor that experienced a more efficient burning process in the explosion. Nevertheless, it is still possible that SN 2011hr may serve as a transitional object connecting the SN 1991T-like SNe Ia with a superluminous subclass like SN 2007if given that the latter also shows very weak IMEs at all phases. | en_US |
dc.language.iso | eng | en_US |
dc.title | A Luminous Peculiar Type Ia Supernova SN 2011hr: More Like SN 1991T or SN 2007if? | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/817/2/114 | en_US |
dc.identifier.scopus | 2-s2.0-84957954891 | en_US |
dc.identifier.isi | 000369437900031 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/817/2/114 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 817 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 114 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016ApJ...817..114Z | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-8646-4858 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Zhang_JJ_2016_SN2011hr_apj_817_2_114.pdf | Pdf editoriale | 2.73 MB | Adobe PDF | View/Open |
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