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Authordc.contributor.authorFolatelli, Gastón 
Authordc.contributor.authorBersten, Melina C. es_CL
Authordc.contributor.authorKuncarayakti, Hanindyo es_CL
Authordc.contributor.authorOlivares Estay, Felipe es_CL
Authordc.contributor.authorAnderson, Joseph P. es_CL
Authordc.contributor.authorHolmbo, Simon es_CL
Authordc.contributor.authorMaeda, Keiichi es_CL
Authordc.contributor.authorMorrell, Nidia es_CL
Authordc.contributor.authorNomoto, Ken’ichi es_CL
Authordc.contributor.authorPignata Libralato, Giuliano es_CL
Authordc.contributor.authorStritzinger, Maximilian es_CL
Authordc.contributor.authorContreras, Carlos es_CL
Authordc.contributor.authorForster, Francisco es_CL
Authordc.contributor.authorHamuy Wackenhut, Mario es_CL
Authordc.contributor.authorPhillips, Mark M. es_CL
Authordc.contributor.authorPrieto, José Luis es_CL
Authordc.contributor.authorValenti, Stefano es_CL
Authordc.contributor.authorAfonso, Paulo es_CL
Authordc.contributor.authorAltenmuller, Konrad es_CL
Authordc.contributor.authorElliott, Jonny es_CL
Authordc.contributor.authorGreiner, Jochen es_CL
Authordc.contributor.authorUpdike, Adria es_CL
Authordc.contributor.authorHaislip, Joshua B. es_CL
Authordc.contributor.authorLaCluyze, Aaron P. es_CL
Authordc.contributor.authorMoore, Justin P. es_CL
Authordc.contributor.authorReichart, Daniel E. es_CL
Admission datedc.date.accessioned2014-09-02T15:33:42Z
Available datedc.date.available2014-09-02T15:33:42Z
Publication datedc.date.issued2014-09-01
Cita de ítemdc.identifier.citationThe Astrophysical Journal, 792:7 (24pp), 2014 September 1en_US
Identifierdc.identifier.otherdoi:10.1088/0004-637X/792/1/7
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/126471
General notedc.descriptionArtículo de publicación de ISI.en_US
Abstractdc.description.abstractWe present extensive optical and near-infrared photometric and spectroscopic observations of the stripped-envelope supernova SN 2010as. Spectroscopic peculiarities such as initially weak helium features and low expansion velocities with a nearly flat evolution place this object in the small family of events previously identified as transitional Type Ib/c supernovae (SNe). There is ubiquitous evidence of hydrogen, albeit weak, in this family of SNe, indicating that they are in fact a peculiar kind of Type IIb SNe that we name “flat-velocity Type IIb. The flat-velocity evolution—which occurs at different levels between 6000 and 8000 km s−1 for different SNe—suggests the presence of a dense shell in the ejecta. Despite the spectroscopic similarities, these objects show surprisingly diverse luminosities. We discuss the possible physical or geometrical unification picture for such diversity. Using archival Hubble Space Telescope images, we associate SN 2010as with a massive cluster and derive a progenitor age of ≈6 Myr, assuming a single star-formation burst, which is compatible with a Wolf–Rayet progenitor. Our hydrodynamical modeling, on the contrary, indicates that the pre-explosion mass was relatively low, ≈4 M . The seeming contradiction between a young age and low pre-SN mass may be solved by a massive interacting binary progenitor.en_US
Lenguagedc.language.isoen_USen_US
Publisherdc.publisherThe American Astronomical Societyen_US
Keywordsdc.subjectsupernovae: generalen_US
Títulodc.titleSupernova 2010as: the lowest-velocity member of a family of flat-velocity type IIb supernovaeen_US
Document typedc.typeArtículo de revista


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