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dc.contributor.authorStritzinger, M. D.
dc.contributor.authorGalbany, Lluís
dc.identifier.citationStritzinger, M. D., Taddia, F., Fraser, M., Tauris, T. M., Suntzeff, N. B., Contreras, C., ... & Phillips, M. M. (2020). The Carnegie Supernova Project II. Observations of the intermediate luminosity red transient SNhunt120. arXiv preprint arXiv:2005.00319. []es_ES
dc.description.abstractWe present multiwavelength observations of two gap transients that were followed by the Carnegie Supernova Project-II. The observations are supplemented with data obtained by a number of different programs. Here in the first of two papers, we focus on the intermediate-luminosity red transient (ILRT) designated SNhunt120, while in a companion paper we examine the luminous red novae AT 2014ej. Our data set for SNhunt120 consists of an early optical discovery, estimated to be within three days after outburst, the subsequent optical and near-infrared broadband followup extending over a period of about two months, two visual and two near-infrared wavelength spectra, and Spitzer Space Telescope observations extending from early (+28 d) to late (+1155 d) phases. SNhunt120 resembles other ILRTs such as NGC 300-2008-OT and SN 2008S, and like these other ILRTs, SNhunt120 exhibits prevalent midinfrared emission at both early and late phases. From the comparison of SNhunt120 and other ILRTs to electron-capture supernova simulations, we find that the current models underestimate the explosion kinetic energy and thereby produce synthetic light curves that overestimate the luminosity. Finally, examination of pre-outburst Hubble Space Telescope images yields no progenitor detection.es_ES
dc.description.sponsorshipUSA's NSF AST-0306969 AST-0607438 AST-1008343 AST-1613426 AST-1613455 AST-1613472es_ES
dc.description.sponsorshipDanish Agency for Science and Technology and Innovationes_ES
dc.description.sponsorshipIndependent Research Fund Denmark (IRFD) 8021-00170Bes_ES
dc.description.sponsorshipVILLUM FONDEN 13261es_ES
dc.description.sponsorshipScience Foundation Irelandes_ES
dc.description.sponsorshipEuropean Union (EU) 754513es_ES
dc.description.sponsorshipAarhus University Research Foundationes_ES
dc.description.sponsorshipNational Science Foundation (NSF) AST1613455es_ES
dc.description.sponsorshipTexas A&M University Mitchell/Heep/Munnerlyn Chair in Observational Astronomyes_ES
dc.description.sponsorshipEuropean Union (EU) 839090es_ES
dc.description.sponsorshipEuropean Union (EU) PGC2018-095317-B-C21es_ES
dc.description.sponsorshipComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 1191038es_ES
dc.description.sponsorshipMinistry of Economy, Development, and Tourism's Millennium Science Initiative IC120009es_ES
dc.description.sponsorshipCatania University 55722062134es_ES
dc.publisherEDP Scienceses_ES
dc.rightsAtribución 3.0 España*
dc.subjectSupernovae: individual: SNhunt120es_ES
dc.subjectSupernovae: generales_ES
dc.titleThe Carnegie Supernova Project II Observations of the intermediate-luminosity red transient SNhunt120es_ES

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Atribución 3.0 España
Except where otherwise noted, this item's license is described as Atribución 3.0 España