A Nondetection of Iron in the First High-resolution Emission 51ÁÔÆæÈë¿Ú of the Lava Planet 55 Cnc e
The Astronomical Journal IOP Publishing 166:4 (2023) 155-155
Abstract:
Abstract Close-in lava planets represent an extreme example of terrestrial worlds, but their high temperatures may allow us to probe a diversity of crustal compositions. The brightest and most well-studied of these objects is 55 Cancri e, a nearby super-Earth with a remarkably short 17 hr orbit. However, despite numerous studies, debate remains about the existence and composition of its atmosphere. We present upper limits on the atmospheric pressure of 55 Cnc e derived from high-resolution time-series spectra taken with Gemini-N/MAROON-X. Our results are consistent with current crustal evaporation models for this planet which predict a thin ∼100 mbar atmosphere. We conclude that, if a mineral atmosphere is present on 55 Cnc e, the atmospheric pressure is below 100 mbar.Modelling the effect of 3D temperature and chemistry on the cross-correlation signal of transiting ultra-hot Jupiters: a study of five chemical species on WASP-76b
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 525:4 (2023) 4942-4961
YARARA V2: Reaching sub m/s precision over a decade using PCA on line-by-line RVs
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On the detectability of strong lensing in near-infrared surveys
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 525:2 (2023) 2341-2354
Transit Timing Variations in the three-planet system: TOI-270
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