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dc.contributor.authorNinan, J. P-
dc.contributor.authorOjha, D. K-
dc.contributor.authorBhatt, B. C-
dc.contributor.authorMallick, K. K-
dc.contributor.authorTej, A-
dc.contributor.authorSahu, D. K-
dc.contributor.authorGhosh, S. K-
dc.contributor.authorMohan, V-
dc.identifier.citationASI Conference Series, Vol. 4, pp. 1-8en
dc.descriptionOpen Accessen
dc.description.abstractThe FU Orionis (FUor) or EX Orionis (EXor) phenomenon has attracted increasing attention in recent years and is now accepted as a crucial element in the early evolution of low-mass stars. FUor and EXor eruptions of young stellar objects (YSOs) are caused by strongly enhanced accretion from the surrounding disk. FUors display optical outbursts of &sim 4 mag or more and last for several decades, whereas EXors show smaller outbursts (Δ m ∼ 2 - 3 mag) that last from a few months to a few years and may occur repeatedly. Therefore, FUor/EXor eruptions represent a rare but very important phenomenon in early stellar evolution, during which a young low-mass YSO brightens by up to several optical magnitudes. Hence, long-term observations of this class of eruptive variables are important to design theoretical models of low-mass star formation. In this paper, we present recent results from our long-term monitoring observations of three rare types of eruptive young variables with the 2-m Himalayan Chandra Telescope (HCT) and the 2-m IUCAA Girawali Observatory (IGO) telescope.en
dc.publisherAstronomical Society of Indiaen
dc.rights© Astronomical Society of Indiaen
dc.subjectFormation – starsen
dc.subjectPre-main-sequence – starsen
dc.subjectOther – ISMen
dc.subjectClouds -- (ISM:) reflection nebulaeen
dc.titleThe outburst and nature of young eruptive low mass stars in dark cloudsen
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