A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e

Kaitlin C. Rasmussen; Miles H. Currie; Celeste Hagee; Christiaan van Buchem; Matej Malik; Arjun B. Savel; Matteo Brogi; Emily Rauscher; Victoria Meadows; Megan Mansfield; Eliza M.R. Kempton; Jean Michel Desert; Joost P. Wardenier; Lorenzo Pino; Michael Line; Vivien Parmentier; Andreas Seifahrt; David Kasper; Madison Brady; Jacob L. Bean

doi:10.3847/1538-3881/acf28e

A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e

Kaitlin C. Rasmussen, Miles H. Currie^*, Celeste Hagee, Christiaan van Buchem, Matej Malik, Arjun B. Savel, Matteo Brogi, Emily Rauscher, Victoria Meadows, Megan Mansfield, Eliza M.R. Kempton, Jean Michel Desert, Joost P. Wardenier, Lorenzo Pino, Michael Line, Vivien Parmentier, Andreas Seifahrt, David Kasper, Madison Brady, Jacob L. Bean

^*Corresponding author for this work

Geology and Geochemistry

Research output: Contribution to Journal › Article › Academic › peer-review

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.

Original language	English
Article number	155
Pages (from-to)	1-5
Number of pages	5
Journal	Astronomical Journal
Volume	166
Issue number	4
Early online date	12 Sept 2023
DOIs	https://doi.org/10.3847/1538-3881/acf28e
Publication status	Published - 1 Oct 2023

Bibliographical note

Funding Information:
We thank our anonymous reviewer for their comments and suggestions that improved the clarity and robustness of the paper. K.C.R. and M.H.C. share cofirst authorship. This work was performed by the Virtual Planetary Laboratory Team, a member of the NASA Nexus for Exoplanet System Science, funded via NASA Astrobiology Program grant No. 80NSSC18K0829. This research was also supported by grant No. 2019-1403 from the Heising-Simons Foundation.

Publisher Copyright:
© 2023. The Author(s). Published by the American Astronomical Society.

Funding

We thank our anonymous reviewer for their comments and suggestions that improved the clarity and robustness of the paper. K.C.R. and M.H.C. share cofirst authorship. This work was performed by the Virtual Planetary Laboratory Team, a member of the NASA Nexus for Exoplanet System Science, funded via NASA Astrobiology Program grant No. 80NSSC18K0829. This research was also supported by grant No. 2019-1403 from the Heising-Simons Foundation.

Funders	Funder number
Virtual Planetary Laboratory Team
National Aeronautics and Space Administration	2019-1403, 80NSSC18K0829
National Aeronautics and Space Administration
Heising-Simons Foundation

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Rasmussen, K. C., Currie, M. H., Hagee, C., van Buchem, C., Malik, M., Savel, A. B., Brogi, M., Rauscher, E., Meadows, V., Mansfield, M., Kempton, E. M. R., Desert, J. M., Wardenier, J. P., Pino, L., Line, M., Parmentier, V., Seifahrt, A., Kasper, D., Brady, M., & Bean, J. L. (2023). A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e. Astronomical Journal, 166(4), 1-5. Article 155. https://doi.org/10.3847/1538-3881/acf28e

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title = "A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e",

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.",

author = "Rasmussen, {Kaitlin C.} and Currie, {Miles H.} and Celeste Hagee and {van Buchem}, Christiaan and Matej Malik and Savel, {Arjun B.} and Matteo Brogi and Emily Rauscher and Victoria Meadows and Megan Mansfield and Kempton, {Eliza M.R.} and Desert, {Jean Michel} and Wardenier, {Joost P.} and Lorenzo Pino and Michael Line and Vivien Parmentier and Andreas Seifahrt and David Kasper and Madison Brady and Bean, {Jacob L.}",

note = "Funding Information: We thank our anonymous reviewer for their comments and suggestions that improved the clarity and robustness of the paper. K.C.R. and M.H.C. share cofirst authorship. This work was performed by the Virtual Planetary Laboratory Team, a member of the NASA Nexus for Exoplanet System Science, funded via NASA Astrobiology Program grant No. 80NSSC18K0829. This research was also supported by grant No. 2019-1403 from the Heising-Simons Foundation. Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

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Rasmussen, KC, Currie, MH, Hagee, C, van Buchem, C, Malik, M, Savel, AB, Brogi, M, Rauscher, E, Meadows, V, Mansfield, M, Kempton, EMR, Desert, JM, Wardenier, JP, Pino, L, Line, M, Parmentier, V, Seifahrt, A, Kasper, D, Brady, M & Bean, JL 2023, 'A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e', Astronomical Journal, vol. 166, no. 4, 155, pp. 1-5. https://doi.org/10.3847/1538-3881/acf28e

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T1 - A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e

AU - Rasmussen, Kaitlin C.

AU - Currie, Miles H.

AU - Hagee, Celeste

AU - van Buchem, Christiaan

AU - Malik, Matej

AU - Savel, Arjun B.

AU - Brogi, Matteo

AU - Rauscher, Emily

AU - Meadows, Victoria

AU - Mansfield, Megan

AU - Kempton, Eliza M.R.

AU - Desert, Jean Michel

AU - Wardenier, Joost P.

AU - Pino, Lorenzo

AU - Line, Michael

AU - Parmentier, Vivien

AU - Seifahrt, Andreas

AU - Kasper, David

AU - Brady, Madison

AU - Bean, Jacob L.

N1 - Funding Information: We thank our anonymous reviewer for their comments and suggestions that improved the clarity and robustness of the paper. K.C.R. and M.H.C. share cofirst authorship. This work was performed by the Virtual Planetary Laboratory Team, a member of the NASA Nexus for Exoplanet System Science, funded via NASA Astrobiology Program grant No. 80NSSC18K0829. This research was also supported by grant No. 2019-1403 from the Heising-Simons Foundation. Publisher Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - 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.

AB - 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.

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ER -

A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e

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