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dc.contributor.authorPoppenhaeger, K.
dc.contributor.authorCody, A. M.
dc.contributor.authorCovey, K. R.
dc.contributor.authorGünther, H. M.
dc.contributor.authorHillenbrand, L. A.
dc.contributor.authorPlavchan, P.
dc.contributor.authorRebull, L. M.
dc.contributor.authorStauffer, J. R.
dc.contributor.authorWolk, S. J.
dc.contributor.authorEspaillat, C.
dc.contributor.authorForbrich, J.
dc.contributor.authorGutermuth, R. A.
dc.contributor.authorHora, J. L.
dc.contributor.authorMorales-Calderon, M.
dc.contributor.authorSong, Inseok
dc.date.accessioned2017-07-12T16:33:37Z
dc.date.available2017-07-12T16:33:37Z
dc.date.issued2015-09-22
dc.identifier.citationPoppenhaeger , K , Cody , A M , Covey , K R , Günther , H M , Hillenbrand , L A , Plavchan , P , Rebull , L M , Stauffer , J R , Wolk , S J , Espaillat , C , Forbrich , J , Gutermuth , R A , Hora , J L , Morales-Calderon , M & Song , I 2015 , ' YSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720 ' , The Astronomical Journal , vol. 150 , no. 4 . https://doi.org/10.1088/0004-6256/150/4/118
dc.identifier.issn0004-6256
dc.identifier.otherPURE: 11212129
dc.identifier.otherPURE UUID: bfa6ab35-3a1f-4e16-aa55-a5f12bf48285
dc.identifier.otherArXiv: http://arxiv.org/abs/1507.04325v1
dc.identifier.otherScopus: 84946845251
dc.identifier.otherORCID: /0000-0001-8694-4966/work/62751214
dc.identifier.urihttp://hdl.handle.net/2299/18904
dc.descriptionK. Poppenhaeger, et al., “YSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720”, The Astronomical Journal, Vol. 150(4), September 2015. © 2015. The American Astronomical Society. All rights reserved.
dc.description.abstractWe present a time-variability study of young stellar objects in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 micron with the Spitzer Space Telescope; this study is part of the Young Stellar Object VARiability project (YSOVAR). We have collected light curves for 181 cluster members over 40 days. We find a high variability fraction among embedded cluster members of ca. 70%, whereas young stars without a detectable disk display variability less often (in ca. 50% of the cases) and with lower amplitudes. We detect periodic variability for 33 sources with periods primarily in the range of 2-6 days. Practically all embedded periodic sources display additional variability on top of their periodicity. Furthermore, we analyze the slopes of the tracks that our sources span in the color-magnitude diagram (CMD). We find that sources with long variability time scales tend to display CMD slopes that are at least partially influenced by accretion processes, while sources with short variability time scales tend to display extinction-dominated slopes. We find a tentative trend of X-ray detected cluster members to vary on longer time scales than the X-ray undetected members.en
dc.format.extent22
dc.language.isoeng
dc.relation.ispartofThe Astronomical Journal
dc.subjectastro-ph.SR
dc.titleYSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1088/0004-6256/150/4/118
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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