The Emergence of the Infrared Transient VVV-WIT-06

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dc.contributor.authorMinniti, D.
dc.contributor.authorSaito, R.K.
dc.contributor.authorForster, F.
dc.contributor.authorPignata, G.
dc.contributor.authorIvanov, V.D.
dc.contributor.authorLucas, P.W.
dc.contributor.authorBeamin, J.C.
dc.contributor.authorBorissova, J.
dc.contributor.authorCatelan, M.
dc.contributor.authorGonzalez, O.A.
dc.contributor.authorHempel, M.
dc.contributor.authorHsiao, E.
dc.contributor.authorKurtev, R.
dc.contributor.authorMajaess, D.
dc.contributor.authorMasetti, N.
dc.contributor.authorMorrell, N.I.
dc.contributor.authorPhillips, M.M.
dc.contributor.authorPullen, J.B.
dc.contributor.authorRejkuba, M.
dc.contributor.authorSmith, L.
dc.contributor.authorSurot, F.
dc.contributor.authorValenti, E.
dc.contributor.authorZoccali, M.
dc.date.accessioned2018-05-28T21:06:08Z
dc.date.available2018-05-28T21:06:08Z
dc.date.issued2017-11
dc.descriptionIndexación: Scopuses_ES
dc.description.abstractWe report the discovery of an enigmatic large-amplitude (ΔKs >10.5 mag) transient event in near-IR data obtained by the VISTA Variables in the Via Lactea (VVV) ESO Public Survey. The object (designated VVV-WIT- 06) is located at R.A.=17:07:18.917, decl.=-39:06:26.45 (J2000), corresponding to Galactic coordinates l=347.14539, b=0.88522. It exhibits a clear eruption, peaking at Ks=9 mag during 2013 July and fading to Ks ∼ 16.5 in 2017. Our late near-IR spectra show post-outburst emission lines, including some broad emission lines (upward of FWHM ∼ 3000 km s-1). We estimate a total extinction of AV = 10-15 mag in the surrounding field, and no progenitor was observed in ZYJHKs images obtained during 2010-2012 (down to Ks > 18.5mag). Subsequent deep near-IR imaging and spectroscopy, in concert with the available multiband photometry, indicate that VVV-WIT-06 may be either: (i) the closest Type I SN observed in about 400 years, (ii) an exotic highamplitude nova that would extend the known realm of such objects, or (iii) a stellar merger. In all of these cases, VVV-WIT-06 is a fascinating and curious astrophysical target under any of the scenarios considered.es_ES
dc.description.urihttp://iopscience.iop.org/article/10.3847/2041-8213/aa9374/meta
dc.identifier.citationAstrophysical Journal Letters, 849(2), art. no. L23.es_ES
dc.identifier.issn2041-8205
dc.identifier.otherDOI: 10.3847/2041-8213/aa9374
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/5908
dc.language.isoenes_ES
dc.publisherInstitute of Physics Publishinges_ES
dc.subjectBinaries: closees_ES
dc.subjectGalaxy: stellar contentes_ES
dc.subjectNovae, cataclysmic variableses_ES
dc.subjectSupernovae: individuales_ES
dc.titleThe Emergence of the Infrared Transient VVV-WIT-06es_ES
dc.typeArtículoes_ES
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