2023AJ....166..155R

Query : 2023AJ....166..155R

2023AJ....166..155R - Astron. J., 166, 155 (2023/October-0)

A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e.

RASMUSSEN K.C., CURRIE M.H., HAGEE C., VAN BUCHEM C., MALIK M., SAVEL A.B., BROGI M., RAUSCHER E., MEADOWS V., MANSFIELD M., KEMPTON E.M.-R., DESERT J.-M., WARDENIER J.P., PINO L., LINE M., PARMENTIER V., SEIFAHRT A., KASPER D., BRADY M. and BEAN J.L.

Abstract (from CDS):

Close-in lava planets represent an extreme example of terrestrial worlds, but their high temperatures may allow us to probe a diversity of crustal compositions. The brightest and most well-studied of these objects is 55 Cancri e, a nearby super-Earth with a remarkably short 17 hr orbit. However, despite numerous studies, debate remains about the existence and composition of its atmosphere. We present upper limits on the atmospheric pressure of 55 Cnc e derived from high-resolution time-series spectra taken with Gemini-N/MAROON-X. Our results are consistent with current crustal evaporation models for this planet which predict a thin ∼100 mbar atmosphere. We conclude that, if a mineral atmosphere is present on 55 Cnc e, the atmospheric pressure is below 100 mbar.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet atmospheres - Observational astronomy

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 : 2023AJ....166..155R

Basic data :
* rho01 Cnc e -- Extra-solar Planet
Other object types: otypes_help 		* (*,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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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 4 Display criteria :

Identifiers (6) :
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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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