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SUMMARY:PETS: The PEPSI Exoplanet Transit Survey - Investigating the prese
 nce of a silicate atmosphere  on the super-Earth 55 Cnc e
DTSTART;VALUE=DATE-TIME:20220908T080000Z
DTEND;VALUE=DATE-TIME:20220908T081500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115915Z
UID:indico-contribution-109@meetings.aip.de
DESCRIPTION:Speakers: Engin Keles (AIP)\nThe PEPSI Exoplanet Transit Surve
 y (PETS) is a spectroscopic survey of exoplanet transits\, secondary eclip
 ses\, and host-star characterization. In this collaborative effort from AI
 P\, MPIA\, INAF\, University of Arizona\, Ohio State University and the LB
 T\, a large number of targets have been observed with the goal to characte
 rize planetary atmospheres in detail. \n\nTowards the atmospheric characte
 rization of smaller planets\, the super-Earth exoplanet 55 Cnc e is one of
  the most promising terrestrial exoplanets studied to date. Here\, we pres
 ent a high-resolution spectroscopic transit observation of this planet wit
 hin the PETS survey. 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 absorpt
 ion of various atomic and ionized species. \n\nNot finding absorption for 
 any of the investigated species\, we are able to set absorption limits wit
 h a median value of 1.9 x Rp\, ruling out  the evidence of a widely extend
 ed silicate envelope on this super-Earth reaching several planetary radii.
 \n\nhttps://meetings.aip.de/event/16/contributions/109/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/16/contributions/109/
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