2022MNRAS.513L..15S

Query : 2022MNRAS.513L..15S

2022MNRAS.513L..15S - Mon. Not. R. Astron. Soc., 513, L15-L19 (2022/June-2)

The hot Neptune WASP-166 b with ESPRESSO II: confirmation of atmospheric sodium.

SEIDEL J.V., CEGLA H.M., DOYLE L., LAFARGA M., BROGI M., GANDHI S., ANDERSON D.R., ALLART R., BUCHSCHACHER N., LOVIS C. and SOSNOWSKA D.

Abstract (from CDS):

The hot Neptune desert, a distinct lack of highly irradiated planets in the size range of Neptune, remains one of the most intriguing results of exoplanet population studies. A deeper understanding of the atmosphere of exoplanets sitting at the edge or even within the Neptune desert will allow us to better understand if planetary formation or evolution processes are at the origin of the desert. A detection of sodium in WASP-166 b was presented previously with tentative line broadening at the 3.4 σ with the HARPS spectrograph. We update this result with two transits observed with the ESPRESSO spectrograph, confirming the detection in each night and the broadened character of the line. This result marks the first confirmed resolved sodium detection within the Neptune desert. In this work, we additionally highlight the importance of treating low-SNR spectral regions particularly where absorption lines of stellar sodium and planetary sodium overlap at mid transit - an important caveat for future observations of the system.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): Instrumentation: spectrographs - Methods: observational - Techniques: spectroscopic - Planets and satellites: atmospheres - Planetary Systems

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 BD-20 2976b Pl 09 39 30.0861120120 -20 58 56.881266564           ~ 51 0

Query : 2022MNRAS.513L..15S

Basic data :
BD-20 2976b -- Extra-solar Planet
Other object types: otypes_help 		Pl? (2019AJ,TOI,...), Pl (2021ApJS), * (BD)
ICRS coord. (ep=J2000) : 		09 39 30.0861120120 -20 58 56.881266564 (Optical) [ 0.0125 0.0112 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		09 37 11.3032784031 -20 45 20.565353085 [ 0.0125 0.0112 90 ]
Gal coord. (ep=J2000) : 		253.9619530532195 +23.1363689160634 [ 0.0125 0.0112 90 ]
Proper motions mas/yr : 		-55.101 11.152 [0.016 0.014 90] A 2020yCat.1350....0G
Parallaxes (mas): 		8.7523 [0.0141] A 2020yCat.1350....0G
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Hierarchy : number of linked objects
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Identifiers (5) :
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BD-20 2976b TOI-576.01 WASP-166b
NAME-IAU Catalineta TOI-576b

References (51 between 1850 and 2026) (Total 51)
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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