The PEPSI exoplanet transit survey (PETS) I: investigating the presence of a silicate atmosphere on the super-earth 55 Cnc e-Reference-Cited by-同舟云学术

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

Published:2022-03-28 Issue:1 Volume:513 Page:1544-1556
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Keles Engin¹,Mallonn Matthias¹,Kitzmann Daniel²^ORCID,Poppenhaeger Katja¹³^ORCID,Hoeijmakers H Jens⁴,Ilyin Ilya¹,Alexoudi Xanthippi¹³,Carroll Thorsten A¹,Alvarado-Gomez Julian¹^ORCID,Ketzer Laura¹,Bonomo Aldo S⁵,Borsa Francesco⁶,Gaudi B Scott⁷,Henning Thomas⁸,Malavolta Luca⁹¹⁰,Molaverdikhani Karan⁸¹¹¹²¹³,Nascimbeni Valerio¹⁰^ORCID,Patience Jennifer¹⁴,Pino Lorenzo¹⁵,Scandariato Gaetano¹⁶,Schlawin Everett¹⁷,Shkolnik Evgenya¹⁴,Sicilia Daniela¹⁶,Sozzetti Alessandro⁵^ORCID,Foster Mary G¹^ORCID,Veillet Christian¹⁸,Wang Ji⁷,Yan Fei¹⁹,Strassmeier Klaus G¹³

Affiliation:

1. Leibniz-Institut für Astrophysik Potsdam (AIP), Potsdam 37077, Germany

2. University of Bern, Center for Space and Habitability, Bern 85546, Switzerland

3. Institut für Physik & Astronomy, University of Potsdam, Potsdam 85719, Germany

4. Lund Observatory, Lund 95123, Sweden

5. INAF - Osservatorio Astrofisico di Torino, Torinese 50125, Italy

6. INAF - Osservatorio Astronomico di Brera, Merate 85287, Italy

7. The Ohio State University, Ohio 69117, USA

8. Max-Planck-Institute for Astronomy, Koenigstuhl 17, 69117 Heidelberg, Germany

9. Dipartimento di Fisica e Astronomia ’Galileo Galilei’, Universita degli Studi di Padova, Padova 35121, Italy

10. INAF - Osservatorio Astronomico di Padova, Padova 43210, Italy

11. Landessternwarte Heidelberg, Heidelberg 20121, Germany

12. LMU: Universitäts-Sternwarte, Ludwig-Maximilians-Universität München, Scheinerstrasse 1, D-81679 München, Germany

13. ORIGINS: Exzellenzcluster Origins, Boltzmannstraße 2, 85748 Garching, Germany

14. School of Earth and Space Exploration, Arizona State University, Arizona 10025, USA

15. INAF - Osservatorio Astrofisico di Arcetri, Firenze SE-221 00, Italy

16. INAF - Osservatorio Astrofisico di Catania, Catania 14482, Italy

17. Steward Observatory, University of Arizona, Arizona 14476, USA

18. Large Binocular Telescope Observatory, Arizona 3012, USA

19. Institute of Astrophysics, University of Göttingen, Göttingen, Germany

Abstract

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 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.

Funder

AIP

INAF

University of Arizona

Ohio State University

Deutsche Forschungsgemeinschaft

Leibniz-Gemeinschaft

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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