Kazan Federal University Digital Repository

The evolution of luminous red nova at 2017jfs in NGC4470?

Show simple item record

dc.contributor.author Pastorello A.
dc.contributor.author Chen T.
dc.contributor.author Cai Y.
dc.contributor.author Morales-Garoffolo A.
dc.contributor.author Cano Z.
dc.contributor.author Mason E.
dc.contributor.author Barsukova E.
dc.contributor.author Benetti S.
dc.contributor.author Berton M.
dc.contributor.author Bose S.
dc.contributor.author Bufano F.
dc.contributor.author Callis E.
dc.contributor.author Cannizzaro G.
dc.contributor.author Cartier R.
dc.contributor.author Chen P.
dc.contributor.author Dong S.
dc.contributor.author Dyrbye S.
dc.contributor.author Elias-Rosa N.
dc.contributor.author Flörs A.
dc.contributor.author Fraser M.
dc.contributor.author Geier S.
dc.contributor.author Goranskij V.
dc.contributor.author Kann D.
dc.contributor.author Kuncarayakti H.
dc.contributor.author Onori F.
dc.contributor.author Reguitti A.
dc.contributor.author Reynolds T.
dc.contributor.author Losada I.
dc.contributor.author Sagués Carracedo A.
dc.contributor.author Schweyer T.
dc.contributor.author Smartt S.
dc.contributor.author Tatarnikov A.
dc.contributor.author Valeev A.
dc.contributor.author Vogl C.
dc.contributor.author Wevers T.
dc.contributor.author De Ugarte Postigo A.
dc.contributor.author Izzo L.
dc.contributor.author Inserra C.
dc.contributor.author Kankare E.
dc.contributor.author Maguire K.
dc.contributor.author Smith K.
dc.contributor.author Stalder B.
dc.contributor.author Tartaglia L.
dc.contributor.author Thöne C.
dc.contributor.author Valerin G.
dc.contributor.author Young D.
dc.date.accessioned 2020-01-15T20:52:15Z
dc.date.available 2020-01-15T20:52:15Z
dc.date.issued 2019
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/155464
dc.description.abstract © ESO 2019. We present the results of our photometric and spectroscopic follow-up of the intermediate-luminosity optical transient AT 2017jfs. At peak, the object reaches an absolute magnitude of Mg = -15:46 ± 0:15 mag and a bolometric luminosity of 5:5 × 1041 erg s-1. Its light curve has the doublepeak shape typical of luminous red novae (LRNe), with a narrow first peak bright in the blue bands, while the second peak is longer-lasting and more luminous in the red and near-infrared (NIR) bands. During the first peak, the spectrum shows a blue continuum with narrow emission lines of H and Fe II. During the second peak, the spectrum becomes cooler, resembling that of a K-type star, and the emission lines are replaced by a forest of narrow lines in absorption. About 5 months later, while the optical light curves are characterized by a fast linear decline, the NIR ones show a moderate rebrightening, observed until the transient disappears in solar conjunction. At these late epochs, the spectrum becomes reminiscent of that of M-type stars, with prominent molecular absorption bands. The late-time properties suggest the formation of some dust in the expanding common envelope or an IR echo from foreground pre-existing dust. We propose that the object is a common-envelope transient, possibly the outcome of a merging event in a massive binary, similar to NGC4490-2011OT1.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Binaries: Close
dc.subject Stars: Massive
dc.subject Stars: winds, outflows
dc.subject Supernovae: Individual: AT 2017jfs
dc.subject Supernovae: Individual: NGC440-2011OT1
dc.title The evolution of luminous red nova at 2017jfs in NGC4470?
dc.type Article
dc.relation.ispartofseries-volume 625
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00046361-2019-625-SID85071258065


Files in this item

This item appears in the following Collection(s)

  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account

Statistics