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dc.contributor.authorDavid, Trevor J.
dc.contributor.authorPetigura, Erik A.
dc.contributor.authorHillenbrand, Lynne A.
dc.contributor.authorCody, Ann Marie
dc.contributor.authorCameron, Andrew Collier
dc.contributor.authorStauffer, John R.
dc.contributor.authorFulton, B. J.
dc.contributor.authorIsaacson, Howard T.
dc.contributor.authorHoward, Andrew W.
dc.contributor.authorHowell, Steve B.
dc.contributor.authorEverett, Mark E.
dc.contributor.authorWang, Ji
dc.contributor.authorBenneke, Björn
dc.contributor.authorHellier, Coel
dc.contributor.authorWest, Richard G.
dc.contributor.authorPollacco, Don
dc.contributor.authorAnderson, David R.
dc.identifier.citationDavid , T J , Petigura , E A , Hillenbrand , L A , Cody , A M , Cameron , A C , Stauffer , J R , Fulton , B J , Isaacson , H T , Howard , A W , Howell , S B , Everett , M E , Wang , J , Benneke , B , Hellier , C , West , R G , Pollacco , D & Anderson , D R 2017 , ' A transient transit signature associated with the young star RIK-210 ' Astrophysical Journal , vol. 835 , no. 2 , 168 . DOI: 10.3847/1538-4357/835/2/168en
dc.identifier.otherPURE: 249376545
dc.identifier.otherPURE UUID: fe67559d-8c76-49d9-bfad-f6d4caf9d306
dc.identifier.otherScopus: 85012000435
dc.description.abstractWe find transient transit-like dimming events within the K2 time series photometry of the young star RIK-210 in the Upper Scorpius OB association. These dimming events are variable in depth, duration, and morphology. High spatial resolution imaging revealed that the star is single and radial velocity monitoring indicated that the dimming events cannot be due to an eclipsing stellar or brown dwarf companion. Archival and follow-up photometry suggest the dimming events are transient in nature. The variable morphology of the dimming events suggests they are not due to a single spherical body. The ingress of each dimming event is always shallower than egress, as one would expect for an orbiting body with a leading tail. The dimming events are periodic and synchronous with the stellar rotation. However, we argue it is unlikely the dimming events could be attributed to anything on the stellar surface based on the observed depths and durations. Variable obscuration by a protoplanetary disk is unlikely on the basis that the star is not actively accreting and lacks the infrared excess associated with an inner disk. Rather, we explore the possibilities that the dimming events are due to magnetospheric clouds, a transiting protoplanet surrounded by circumplanetary dust and debris, eccentric orbiting bodies undergoing periodic tidal disruption, or an extended field of dust or debris near the corotation radius.en
dc.relation.ispartofAstrophysical Journalen
dc.rights© 2017 The American Astronomical Society. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectCircumstellar matteren
dc.subjectPlanetstar interactionsen
dc.subjectStars: magnetic fielden
dc.subjectStars: pre-main sequenceen
dc.subjectStars: rotationen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectAstronomy and Astrophysicsen
dc.subjectSpace and Planetary Scienceen
dc.titleA transient transit signature associated with the young star RIK-210en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.description.statusPeer revieweden

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