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Authordc.contributor.authorLeloudas, G. 
Authordc.contributor.authorStritzinger, M. D. es_CL
Authordc.contributor.authorSollerman, J. es_CL
Authordc.contributor.authorBurns, C. R. es_CL
Authordc.contributor.authorKozma, C. es_CL
Authordc.contributor.authorKrisciunas, K. es_CL
Authordc.contributor.authorMaund, J. R. es_CL
Authordc.contributor.authorMilne, P. es_CL
Authordc.contributor.authorFilippenko, A. V. es_CL
Authordc.contributor.authorFransson, C. es_CL
Authordc.contributor.authorGaneshalingam, M. es_CL
Authordc.contributor.authorHamuy Wackenhut, Mario es_CL
Authordc.contributor.authorLi, W. es_CL
Authordc.contributor.authorPhillips, M. M. es_CL
Authordc.contributor.authorSchmidt, B. P. es_CL
Authordc.contributor.authorSkottfelt, J. es_CL
Authordc.contributor.authorTaubenberger, S. es_CL
Authordc.contributor.authorBoldt, L. es_CL
Authordc.contributor.authorFynbo, J. P. U. es_CL
Authordc.contributor.authorGonzalez, L. es_CL
Authordc.contributor.authorSalvo, M. es_CL
Authordc.contributor.authorThomas-Osip, J. es_CL
Admission datedc.date.accessioned2014-01-13T15:34:33Z
Available datedc.date.available2014-01-13T15:34:33Z
Publication datedc.date.issued2009-10
Cita de ítemdc.identifier.citationA&A 505, 265–279 (2009)en_US
Identifierdc.identifier.otherdoi: 10.1051/0004-6361/200912364
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/126219
General notedc.descriptionArtículo de publicación ISI.en_US
Abstractdc.description.abstractAims. We study a thermonuclear supernova (SN), emphasizing very late phases. Methods. An extensive dataset for SN 2003hv that covers the flux evolution from maximum light to day + 786 is presented. This includes 82 epochs of optical imaging, 24 epochs of near-infrared (NIR) imaging, and 10 epochs of optical spectroscopy. These data are combined with published nebular-phase IR spectra, and the observations are compared to model light curves and synthetic nebular spectra. Results. SN 2003hv is a normal Type Ia supernova (SN Ia) with photometric and spectroscopic properties consistent with its rarely observed B-band decline-rate parameter, Delta m(15)(B) = 1.61 +/- 0.02. The blueshift of the most isolated [FeII] lines in the nebular-phase optical spectrum appears consistent with those observed in the IR at similar epochs. At late times there is a prevalent color evolution from the optical toward the NIR bands. We present the latest-ever detection of a SN Ia in the NIR in Hubble Space Telescope images. The study of the ultraviolet/optical/infrared (UVOIR) light curve reveals that a substantial fraction of the flux is "missing" at late times. Between 300 and 700 days past maximum brightness, the UVOIR light curve declines linearly following the decay of radioactive (56)Co, assuming full and instantaneous positron trapping. At 700 days we detect a possible slowdown of the decline in optical-bands, mainly in the V-band. Conclusions. The data are incompatible with a dramatic infrared catastrophe (IRC). However, the idea that an IRC occurred in the densest regions before 350 days can explain the missing flux from the UVOIR wavelengths and the flat-topped profiles in the NIR. We argue that such a scenario is possible if the ejecta are clumpy. The observations suggest that positrons are most likely trapped in the ejecta.en_US
Lenguagedc.language.isoenen_US
Publisherdc.publisherEDP Sciencesen_US
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectsupernovae: generalen_US
Títulodc.titleThe normal Type Ia SN 2003hv out to very late phasesen_US
Document typedc.typeArtículo de revista


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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile