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

Keles, EnginEnginKelesMallonn, MatthiasMatthiasMallonnKitzmann, DanielDanielKitzmannPoppenhaeger, KatjaKatjaPoppenhaegerHoeijmakers, H. JensH. JensHoeijmakersIlyin, IlyaIlyaIlyinAlexoudi, XanthippiXanthippiAlexoudiCarroll, Thorsten A.Thorsten A.CarrollAlvarado-Gomez, JulianJulianAlvarado-GomezKetzer, LauraLauraKetzerBONOMO, ALDO STEFANOALDO STEFANOBONOMOBORSA, FrancescoFrancescoBORSAGaudi, ScottScottGaudiHenning, ThomasThomasHenningMalavolta, LucaLucaMalavoltaMolaverdikhani, KaranKaranMolaverdikhaniNASCIMBENI, VALERIOVALERIONASCIMBENIPatience, JenniferJenniferPatiencePINO, LorenzoLorenzoPINOSCANDARIATO, GAETANOGAETANOSCANDARIATOSchlawin, EverettEverettSchlawinShkolnik, EvgenyaEvgenyaShkolnikSICILIA, DanielaDanielaSICILIASOZZETTI, AlessandroAlessandroSOZZETTIFoster, Mary G.Mary G.FosterVeillet, ChristianChristianVeilletWang, JiJiWangYan, FeiFeiYanStrassmeier, Klaus G.Klaus G.Strassmeier2024-03-052024-03-0520220035-8711http://hdl.handle.net/20.500.12386/34869The 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....STAMPAenThe pepsi exoplanet transit survey (PETS) I: Investigating the presence of a silicate atmosphere on the super-earth 55 Cnc eArticle10.1093/mnras/stac8102-s2.0-85130631758https://academic.oup.com/mnras/article/513/1/1544/6555041http://www.scopus.com/inward/record.url?eid=2-s2.0-85130631758&partnerID=MN8TOARSFIS/05 - ASTRONOMIA E ASTROFISICA