2022MNRAS.513.1544K

Query : 2022MNRAS.513.1544K

2022MNRAS.513.1544K - Mon. Not. R. Astron. Soc., 513, 1544-1556 (2022/June-2)

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

KELES E., MALLONN M., KITZMANN D., POPPENHAEGER K., HOEIJMAKERS H.J., ILYIN I., ALEXOUDI X., CARROLL T.A., ALVARADO-GOMEZ J., KETZER L., BONOMO A.S., BORSA F., GAUDI B.S., HENNING T., MALAVOLTA L., MOLAVERDIKHANI K., NASCIMBENI V., PATIENCE J., PINO L., SCANDARIATO G., SCHLAWIN E., SHKOLNIK E., SICILIA D., SOZZETTI A., FOSTER M.G., VEILLET C., WANG J., YAN F. and STRASSMEIER K.G.

Abstract (from CDS):

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 x R_P. In conclusion, we do not find evidence of a widely extended silicate envelope on this super-Earth reaching several planetary radii.

Journal keyword(s): planets and satellites: atmospheres - planets and satellites: composition

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	* rho01 Cnc e	Pl	08 52 35.8111044043	+28 19 50.954994470						~	682	1

Query : 2022MNRAS.513.1544K

Basic data :

* rho01 Cnc e -- Extra-solar Planet
Other object types:	`* (*,HD)`, `Pl (2004ApJ)`, `Pl? (TOI)`
ICRS coord. (ep=J2000) :	`08 52 35.8111044043 +28 19 50.954994470 (Optical) [ 0.0299 0.0198 90 ] A 2020yCat.1350....0G`
FK4 coord. (ep=B1950 eq=1950) :	`08 49 37.3653494907 +28 31 23.237903251 [ 0.0299 0.0198 90 ]`
Gal coord. (ep=J2000) :	`196.7946531107533 +37.6988974333162 [ 0.0299 0.0198 90 ]`
Proper motions mas/yr :	`-485.681 -233.517 [0.040 0.037 90] A` `2020yCat.1350....0G`
Parallaxes (mas):	`79.4482 [0.0429] A` `2020yCat.1350....0G`

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*` rho01 Cnc e`**	`HD 75732e`	`TOI-1773e`
*` 55 Cnc e`**	`NAME Janssen`	`TOI-1773.01`

References (682 between 1850 and 2026) (Total 682)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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HD 75732e

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