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dc.contributor.authorKóspál, Á.
dc.contributor.authorSzabó, Zs M.
dc.contributor.authorÁbrahám, P.
dc.contributor.authorKraus, S.
dc.contributor.authorTakami, M.
dc.contributor.authorLucas, P. W.
dc.contributor.authorPeña, C. Contreras
dc.contributor.authorUdalski, A.
dc.date.accessioned2020-02-19T01:18:14Z
dc.date.available2020-02-19T01:18:14Z
dc.date.issued2020-02-03
dc.identifier.citationKóspál , Á , Szabó , Z M , Ábrahám , P , Kraus , S , Takami , M , Lucas , P W , Peña , C C & Udalski , A 2020 , ' V346 Nor: the post-outburst life of a peculiar young eruptive star ' , The Astrophysical Journal , vol. 889 , no. 2 , 148 . https://doi.org/10.3847/1538-4357/ab6174
dc.identifier.issn1538-4357
dc.identifier.otherPURE: 19546775
dc.identifier.otherPURE UUID: 6bdcf21e-4315-4b60-a60a-d60000a6b0a9
dc.identifier.otherArXiv: http://arxiv.org/abs/1912.03753v1
dc.identifier.otherORCID: /0000-0002-8872-4462/work/68990526
dc.identifier.otherScopus: 85081326548
dc.identifier.urihttp://hdl.handle.net/2299/22305
dc.description.abstractFU Orionis-type objects (FUors) are young low-mass stars undergoing powerful accretion outbursts. The increased accretion is often accompanied by collimated jets and energetic, large-scale molecular outflows. The extra heating during the outburst may also induce detectable geometrical, chemical, and mineralogical changes in the circumstellar material, affecting possible planet formation around these objects. V346 Nor is a southern FUor with peculiar spectral characteristics. Decades after the beginning of its outburst, it unexpectedly underwent a fading event around 2010 due to a decrease in the mass accretion rate onto the star by at least two orders of magnitude. Here we present optical and near-infrared photometry and spectroscopy obtained after the minimum. Our light curves show a gradual re-brightening of V346 Nor, with its K s-band brightness only 1.5 mag below the outburst brightness level. Our Very Large Telescope (VLT)/XSHOOTER spectroscopic observations display several strong forbidden emission lines toward the source from various metals and molecular hydrogen, suggesting the launch of a new jet. Our N-band spectrum obtained with VLT/VISIR outlines a deeper silicate absorption feature than before, indicating that the geometry of the circumstellar medium has changed in the post-outburst period compared to peak brightness.en
dc.format.extent17
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rightsOpen
dc.subjectData behind figures
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleV346 Nor: the post-outburst life of a peculiar young eruptive staren
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85081326548&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2020-02-03
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/ab6174
rioxxterms.licenseref.uriOther
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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