Keles, Engin; Mallonn, Matthias; Kitzmann, Daniel; Poppenhaeger, Katja; Hoeijmakers, Herman; Ilyin, Ilya; Alexoudi, Xanthippi; Carroll, Thorsten A; Alvarado-Gomez, Julian; Ketzer, Laura; Bonomo, Aldo S; Borsa, Francesco; Gaudi, B Scott; Henning, Thomas; Malavolta, Luca; Molaverdikhani, Karan; Nascimbeni, Valerio; Patience, Jennifer; Pino, Lorenzo; Scandariato, Gaetano; ... (2022). The PEPSI exoplanet transit survey (PETS) I: investigating the presence of a silicate atmosphere on the super-earth 55 Cnc e. Monthly notices of the Royal Astronomical Society, 513(1), pp. 1544-1556. Oxford University Press 10.1093/mnras/stac810
|
Text
stac810.pdf - Published Version Available under License Publisher holds Copyright. Download (3MB) | Preview |
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.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute 10 Strategic Research Centers > Center for Space and Habitability (CSH) 08 Faculty of Science > Physics Institute > NCCR PlanetS |
UniBE Contributor: |
Kitzmann, Daniel, Hoeijmakers, Herman Jens |
Subjects: |
500 Science > 520 Astronomy 600 Technology > 620 Engineering 500 Science > 530 Physics |
ISSN: |
0035-8711 |
Publisher: |
Oxford University Press |
Language: |
English |
Submitter: |
Danielle Zemp |
Date Deposited: |
10 Mar 2023 09:54 |
Last Modified: |
10 Mar 2023 23:26 |
Publisher DOI: |
10.1093/mnras/stac810 |
BORIS DOI: |
10.48350/179714 |
URI: |
https://boris.unibe.ch/id/eprint/179714 |
Actions (login required)
 |
Edit item |