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Discovery and Characterization of the TOI-4468 Planetary System: A Transiting Hot Jupiter with a Lone Nearby Outer Companion

  • Authors: Joseph R. Livesey, Benjamin J. Hord, Juliette Becker, Andrew Vanderburg, Joseph E. Rodriguez, Elise Koo, Chelsea X. Huang, Guðmundur Stefánsson, Karen A. Collins, Ivan A. Strakhov, Zijun He, Maxwell A. Kroft, Robert Aloisi, Khalid Barkaoui, Fabian Rodriguez Frustaglia, Alyssa Jankowski, Kinga Kasprzyk, Judith Korth, Coleman Nelson, Hannu Parviainen, Adam Popowicz, Manfred Raetz, Richard P. Schwarz, Eva Stafne, Keivan G. Stassun, Thomas G. Beatty, Paul Foster, Thomas MacLean, Devansh Mathur, Lizhou Sha, Melinda Soares-Furtado

Joseph R. Livesey et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 6.

Stellar activity indicators for TOI-4468 measured by NEID: the chromatic index (CRX) and differential line width (dLW). There appears to be some evidence of variation in dLW on the same period as the RV signal attributed to TOI-4468.03. Without more data, however, we cannot verify whether the additional RV signal is due to stellar activity or to a third planet in the system.

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