Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29335
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Bose, Subhash | en_US |
dc.contributor.author | Dong, Subo | en_US |
dc.contributor.author | ELIAS DE LA ROSA, NANCY DEL CARMEN | en_US |
dc.contributor.author | Shappee, B. J. | en_US |
dc.contributor.author | Bersier, David | en_US |
dc.contributor.author | BENETTI, Stefano | en_US |
dc.contributor.author | Stritzinger, M. D. | en_US |
dc.contributor.author | Grupe, D. | en_US |
dc.contributor.author | Kochanek, C. S. | en_US |
dc.contributor.author | Prieto, J. L. | en_US |
dc.contributor.author | Chen, Ping | en_US |
dc.contributor.author | Kuncarayakti, H. | en_US |
dc.contributor.author | Mattila, Seppo | en_US |
dc.contributor.author | Morales-Garoffolo, Antonia | en_US |
dc.contributor.author | Morrell, Nidia | en_US |
dc.contributor.author | Onori, F. | en_US |
dc.contributor.author | Reynolds, Thomas M. | en_US |
dc.contributor.author | Siviero, A. | en_US |
dc.contributor.author | Somero, Auni | en_US |
dc.contributor.author | Stanek, K. Z. | en_US |
dc.contributor.author | Terreran, Giacomo | en_US |
dc.contributor.author | Thompson, Todd A. | en_US |
dc.contributor.author | TOMASELLA, Lina | en_US |
dc.contributor.author | Ashall, C. | en_US |
dc.contributor.author | Gall, Christa | en_US |
dc.contributor.author | Gromadzki, M. | en_US |
dc.contributor.author | Holoien, T. W. -S. | en_US |
dc.date.accessioned | 2020-12-30T10:13:51Z | - |
dc.date.available | 2020-12-30T10:13:51Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 2041-8205 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29335 | - |
dc.description.abstract | We report distinctly double-peaked Hα and Hβ emission lines in the late-time, nebular-phase spectra (≳200 days) of the otherwise normal at early phases (≲100 days) type IIP supernova ASASSN-16at (SN 2016X). Such distinctly double-peaked nebular Balmer lines have never been observed for a type II SN. The nebular-phase Balmer emission is driven by the radioactive <SUP>56</SUP>Co decay, so the observed line profile bifurcation suggests a strong bipolarity in the <SUP>56</SUP>Ni distribution or in the line-forming region of the inner ejecta. The strongly bifurcated blueshifted and redshifted peaks are separated by ∼3 × 10<SUP>3</SUP> km s<SUP>-1</SUP> and are roughly symmetrically positioned with respect to the host-galaxy rest frame, implying that the inner ejecta are composed of two almost-detached blobs. The red peak progressively weakens relative to the blue peak, and disappears in the 740 days spectrum. One possible reason for the line-ratio evolution is increasing differential extinction from continuous formation of dust within the envelope, which is also supported by the near-infrared flux excess that develops after ∼100 days. | en_US |
dc.language.iso | eng | en_US |
dc.title | Strongly Bipolar Inner Ejecta of the Normal Type IIP Supernova ASASSN-16at | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/2041-8213/ab0558 | en_US |
dc.identifier.scopus | 2-s2.0-85063487155 | en_US |
dc.identifier.isi | 000459993200002 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/2041-8213/ab0558 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 873 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | L3 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 27 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | ESP | en_US |
dc.contributor.country | CHL | en_US |
dc.contributor.country | DNK | en_US |
dc.contributor.country | FIN | en_US |
dc.contributor.country | POL | en_US |
dc.contributor.country | CHN | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL LETTERS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019ApJ...873L...3B | 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.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0002-1381-9125 | - |
crisitem.author.orcid | 0000-0002-3256-0016 | - |
crisitem.author.orcid | 0000-0002-3697-2616 | - |
crisitem.journal.journalissn | 2041-8205 | - |
crisitem.journal.ance | E196528 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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File | Descrizione | Dimensioni | Formato | |
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2019ApJ...873L...3B_journal.pdf | pdf editoriale | 1.99 MB | Adobe PDF | Visualizza/apri |
2019ApJ...873L...3B_postprint.pdf | preprint | 1.01 MB | Adobe PDF | Visualizza/apri |
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