Amplitude Modulation of Short-timescale Hot Spot Variability

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dc.citation.articleNumber113en_US
dc.citation.issueNumber2en_US
dc.citation.journalTitleThe Astrophysical Journalen_US
dc.citation.volumeNumber906en_US
dc.contributor.authorBiddle, Lauren I.en_US
dc.contributor.authorLlama, Joeen_US
dc.contributor.authorCameron, Andrewen_US
dc.contributor.authorPrato, L.en_US
dc.contributor.authorJardine, Moiraen_US
dc.contributor.authorJohns-Krull, Christopher M.en_US
dc.date.accessioned2021-03-17T15:39:15Zen_US
dc.date.available2021-03-17T15:39:15Zen_US
dc.date.issued2021en_US
dc.description.abstractVariability of Classical T Tauri stars (CTTS) occurs over a vast range of timescales. CTTS in particular are subject to variability caused by accretion shocks, which can occur stochastically, periodically, or quasi-periodically on timescales over a few days. The detectability of young planets within these systems is likely hampered by activity; therefore, it is essential that we understand the origin of young star variability over a range of timescales to help disentangle stellar activity from signatures of planetary origin. We present an analysis of the stochastic small-amplitude photometric variability in the K2 lightcurve of CI Tau occurring on timescales of  lesssim1 day. We find the amplitude of this variability exhibits the same periodic signatures as detected in the large-amplitude variability, indicating that the physical mechanism modulating these brightness features is the same. The periods detected are also in agreement with the rotation period of the star (~6.6 days) and the orbital period of the planet (~9.0 days) known to drive pulsed accretion onto the star.en_US
dc.identifier.citationBiddle, Lauren I., Llama, Joe, Cameron, Andrew, et al.. "Amplitude Modulation of Short-timescale Hot Spot Variability." <i>The Astrophysical Journal,</i> 906, no. 2 (2021) IOP Publishing: https://doi.org/10.3847/1538-4357/abc889.en_US
dc.identifier.doihttps://doi.org/10.3847/1538-4357/abc889en_US
dc.identifier.urihttps://hdl.handle.net/1911/110183en_US
dc.language.isoengen_US
dc.publisherIOP Publishingen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by IOP Publishingen_US
dc.titleAmplitude Modulation of Short-timescale Hot Spot Variabilityen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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