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The PEPSI exoplanet transit survey (PETS) I : Investigating the presence of a silicate atmosphere on the super-earth 55 Cnc e

Keles, Engin ; Mallonn, Matthias ; Kitzmann, Daniel ; Poppenhaeger, Katja ; Hoeijmakers, H. Jens LU ; Ilyin, Ilya ; Alexoudi, Xanthippi ; Carroll, Thorsten A. ; Alvarado-Gomez, Julian and Ketzer, Laura , et al. (2022) In Monthly Notices of the Royal Astronomical Society 513(1). p.1544-1556
Abstract

The study of exoplanets and especially their atmospheres can reveal key insights on their evolution by identifying specific atmospheric species. For such atmospheric investigations, high-resolution transmission spectroscopy has shown great success, especially for Jupiter-type planets. Towards the atmospheric characterization of smaller planets, the super-Earth exoplanet 55 Cnc e is one of the most promising terrestrial exoplanets studied to date. Here, we present a high-resolution spectroscopic transit observation of this planet, acquired with the PEPSI instrument at the Large Binocular Telescope. Assuming the presence of Earth-like crust species on the surface of 55 Cnc e, from which a possible silicate-vapor atmosphere could have... (More)

The study of exoplanets and especially their atmospheres can reveal key insights on their evolution by identifying specific atmospheric species. For such atmospheric investigations, high-resolution transmission spectroscopy has shown great success, especially for Jupiter-type planets. Towards the atmospheric characterization of smaller planets, the super-Earth exoplanet 55 Cnc e is one of the most promising terrestrial exoplanets studied to date. Here, we present a high-resolution spectroscopic transit observation of this planet, acquired with the PEPSI instrument at the Large Binocular Telescope. Assuming the presence of Earth-like crust species on the surface of 55 Cnc e, from which a possible silicate-vapor atmosphere could have originated, we search in its transmission spectrum for absorption of various atomic and ionized species such as Fe, Fe +, Ca, Ca +, Mg, and K, among others. Not finding absorption for any of the investigated species, we are able to set absorption limits with a median value of 1.9 × RP. In conclusion, we do not find evidence of a widely extended silicate envelope on this super-Earth reaching several planetary radii.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
planets and satellites: Atmospheres, planets and satellites: Composition
in
Monthly Notices of the Royal Astronomical Society
volume
513
issue
1
pages
13 pages
publisher
Oxford University Press
external identifiers
  • scopus:85130631758
ISSN
0035-8711
DOI
10.1093/mnras/stac810
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
id
ac1334e4-621b-4d9a-843f-cd919f531fc8
date added to LUP
2022-08-18 16:19:14
date last changed
2024-04-16 23:36:10
@article{ac1334e4-621b-4d9a-843f-cd919f531fc8,
  abstract     = {{<p>The study of exoplanets and especially their atmospheres can reveal key insights on their evolution by identifying specific atmospheric species. For such atmospheric investigations, high-resolution transmission spectroscopy has shown great success, especially for Jupiter-type planets. Towards the atmospheric characterization of smaller planets, the super-Earth exoplanet 55 Cnc e is one of the most promising terrestrial exoplanets studied to date. Here, we present a high-resolution spectroscopic transit observation of this planet, acquired with the PEPSI instrument at the Large Binocular Telescope. Assuming the presence of Earth-like crust species on the surface of 55 Cnc e, from which a possible silicate-vapor atmosphere could have originated, we search in its transmission spectrum for absorption of various atomic and ionized species such as Fe, Fe +, Ca, Ca +, Mg, and K, among others. Not finding absorption for any of the investigated species, we are able to set absorption limits with a median value of 1.9 × RP. In conclusion, we do not find evidence of a widely extended silicate envelope on this super-Earth reaching several planetary radii. </p>}},
  author       = {{Keles, Engin and Mallonn, Matthias and Kitzmann, Daniel and Poppenhaeger, Katja and Hoeijmakers, H. Jens and Ilyin, Ilya and Alexoudi, Xanthippi and Carroll, Thorsten A. and Alvarado-Gomez, Julian and Ketzer, Laura and Bonomo, Aldo S. and Borsa, Francesco and Gaudi, B. Scott and Henning, Thomas and Malavolta, Luca and Molaverdikhani, Karan and Nascimbeni, Valerio and Patience, Jennifer and Pino, Lorenzo and Scandariato, Gaetano and Schlawin, Everett and Shkolnik, Evgenya and Sicilia, Daniela and Sozzetti, Alessandro and Foster, Mary G. and Veillet, Christian and Wang, Ji and Yan, Fei and Strassmeier, Klaus G.}},
  issn         = {{0035-8711}},
  keywords     = {{planets and satellites: Atmospheres; planets and satellites: Composition}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{1}},
  pages        = {{1544--1556}},
  publisher    = {{Oxford University Press}},
  series       = {{Monthly Notices of the Royal Astronomical Society}},
  title        = {{The PEPSI exoplanet transit survey (PETS) I : Investigating the presence of a silicate atmosphere on the super-earth 55 Cnc e}},
  url          = {{http://dx.doi.org/10.1093/mnras/stac810}},
  doi          = {{10.1093/mnras/stac810}},
  volume       = {{513}},
  year         = {{2022}},
}