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JWST COMPASS: NIRSpec/G395H Transmission Observations of the Sub-Neptune HD 15337 c

  • Authors: Nicole L. Wallack, Peter Gao, Michael Greklek-McKeon, Annabella Meech, Artyom Aguichine, Munazza K. Alam, Lili Alderson, Natasha E. Batalha, Natalie M. Batalha, Anna Gagnebin, Tyler A. Gordon, James Kirk, Mercedes López-Morales, Sarah E. Moran, Jea Iyanla Redai, Nicholas Scarsdale, Johanna Teske, Hannah R. Wakeford, Nicholas F. Wogan, Angie Wolfgang

Nicole L. Wallack et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 7.

Observed TESS (black points) and CHEOPS (blue points) TTVs for HD 15337 b (top panel) and c (bottom panel), and JWST TTVs for HD 15337 c (red points), with 100 random draws from only one mode of the multimodal posterior distribution for a third planet exterior to HD 15337 c (gray lines). We caution that since only HD 15337 c currently exhibits TTVs and that there are only 10 observations to fit 10 model parameters, any solution is inherently poorly constrained and the true configuration of the system cannot be determined yet.

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