학술논문
A Non-Detection of Iron in the First High-Resolution Emission Study of the Lava Planet 55 Cnc e
Document Type
Working Paper
Author
Rasmussen, Kaitlin C.; Currie, Miles H.; Hagee, Celeste; van Buchem, Christiaan; Malik, Matej; Savel, Arjun B.; Brogi, Matteo; Rauscher, Emily; Meadows, Victoria; Mansfield, Megan; Kempton, Eliza M. R.; Desert, Jean-Michel; Wardenier, Joost P.; Pino, Lorenzo; Line, Michael; Parmentier, Vivien; Seifahrt, Andreas; Kasper, David; Brady, Madison; Bean, Jacob L.
Source
Subject
Language
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-hour 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 $\sim$ 100 mbar atmosphere. We conclude that, if a mineral atmosphere is present on 55 Cnc e, the atmospheric pressure is below 100 mbar.
Comment: Accepted to the AJ. 7 pages, 5 figures
Comment: Accepted to the AJ. 7 pages, 5 figures