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Gaia 18dvy: A New FUor in the Cygnus OB3 Association

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dc.abstract.enWe present optical-infrared photometric and spectroscopic observations of Gaia 18dvy, located in the Cygnus OB3 association at a distance of 1.88 kpc. Gaia 18dvy was noted by the Gaia alerts system when its light curve exhibited a ≳4 mag rise in 2018-2019. The brightening was also observable at mid-infared wavelengths. The infrared colors of Gaia 18dvy became bluer as the outburst progressed. Its optical and near-infrared spectroscopic characteristics in the outburst phase are consistent with those of bona fide FU Orionis-type young eruptive stars. The progenitor of the outburst is probably a low-mass K-type star with an optical extinction of ˜3 mag. A radiative transfer modeling of the circumstellar structure, based on the quiescent spectral energy distribution, indicates a disk with a mass of 4 × 10<SUP>-3</SUP> M<SUB>⊙</SUB>. Our simple accretion disk modeling implies that the accretion rate had been exponentially increasing for more than 3 yr until mid-2019, when it reached a peak value of 6.9 × 10<SUP>-6</SUP> M<SUB>⊙</SUB> yr<SUP>-1</SUP>. In many respects, Gaia 18dvy is similar to the FU Ori-type object HBC 722.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWyrzykowski, Łukasz
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorZieliński, Paweł
dc.contributor.authorSzegedi-Elek, E.
dc.contributor.authorÁbrahám, P.
dc.contributor.authorKun, M.
dc.contributor.authorKóspál, Á.
dc.contributor.authorChen, L.
dc.contributor.authorMarton, G.
dc.contributor.authorMoór, A.
dc.contributor.authorKiss, C.
dc.contributor.authorPál, A.
dc.contributor.authorSzabados, L.
dc.contributor.authorVarga, J.
dc.contributor.authorVarga-Verebélyi, E.
dc.contributor.authorAndreas, C.
dc.contributor.authorBachelet, E.
dc.contributor.authorBischoff, R.
dc.contributor.authorBódi, A.
dc.contributor.authorBreedt, E.
dc.contributor.authorBurgaz, U.
dc.contributor.authorButterley, T.
dc.contributor.authorCarrasco, J. M.
dc.contributor.authorČepas, V.
dc.contributor.authorDamljanovic, G.
dc.contributor.authorGezer, Ilknur
dc.contributor.authorGodunova, V.
dc.contributor.authorGurgul, A.
dc.contributor.authorHardy, L.
dc.contributor.authorHildebrandt, F.
dc.contributor.authorHoffmann, S.
dc.contributor.authorHundertmark, M.
dc.contributor.authorIhanec, Nada
dc.contributor.authorJanulis, R.
dc.contributor.authorKalup, Cs.
dc.contributor.authorKaczmarek, Z.
dc.contributor.authorKönyves-Tóth, R.
dc.contributor.authorKrezinger, M.
dc.contributor.authorKruszyńska, Katarzyna
dc.contributor.authorLittlefair, S.
dc.contributor.authorMaskoliūnas, M.
dc.contributor.authorMészáros, L.
dc.contributor.authorMikołajczyk, P.
dc.contributor.authorMugrauer, M.
dc.contributor.authorNetzel, Henryka
dc.contributor.authorOrdasi, A.
dc.contributor.authorPakštienė, E.
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorSárneczky, K.
dc.contributor.authorSeli, B.
dc.contributor.authorSimon, A.
dc.contributor.authorŠiškauskaitė, K.
dc.contributor.authorSódor, Á.
dc.contributor.authorSokolovsky, K. V.
dc.contributor.authorStenglein, W.
dc.contributor.authorStreet, R.
dc.contributor.authorSzakáts, R.
dc.contributor.authorTomasella, L.
dc.contributor.authorTsapras, Y.
dc.contributor.authorVida, K.
dc.contributor.authorZdanavičius, J.
dc.contributor.authorZieliński, Mateusz
dc.contributor.authorZiółkowska, O.
dc.date.accessioned2024-01-25T01:43:00Z
dc.date.available2024-01-25T01:43:00Z
dc.date.copyright2020-05-23
dc.date.issued2020
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume899
dc.identifier.doi10.3847/1538-4357/ABA129
dc.identifier.issn0004-637X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/107680
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2020ApJ...899..130S
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal
dc.relation.pages130
dc.rightsOther
dc.sciencecloudnosend
dc.titleGaia 18dvy: A New FUor in the Cygnus OB3 Association
dc.typeJournalArticle
dspace.entity.typePublication