2018ApJ...869..108B

Query : 2018ApJ...869..108B

2018ApJ...869..108B - Astrophys. J., 869, 108-108 (2018/December-3)

Atmospheric mass loss from hot Jupiters irradiated by stellar superflares.

BISIKALO D.V., SHEMATOVICH V.I., CHERENKOV A.A., FOSSATI L. and MOSTL C.

Abstract (from CDS):

Because of their activity, late-type stars are known to host powerful flares producing intense high-energy radiation on short timescales that may significantly affect the atmosphere of nearby planets. We employ a one-dimensional aeronomic model to study the reaction of the upper atmosphere of the hot Jupiter HD 209458b to the additional high-energy irradiation caused by a stellar flare. Atmospheric absorption of the additional energy produced during a flare leads to local atmospheric heating, accompanied by the formation of two propagating shock waves. We present estimates of the additional atmospheric loss occurring in response to the flare. We find the mass-loss rate at the exobase level to significantly increase (3.8 x 1010, 8 x 1010, and 3.5 x 1011 g s–1 for 10, 100, and 1000 times the high-energy flux of the quiet star, respectively) in comparison to that found considering the inactive star (2 x 1010 g s–1).

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): planet-star interactions - planets and satellites: atmospheres - planets and satellites: physical evolution - stars: flare

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 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 2037 1

Query : 2018ApJ...869..108B

Basic data :
HD 209458b -- Extra-solar Planet
Other object types: otypes_help 		Pl? (), Pl (2000ApJ), * (HD)
ICRS coord. (ep=J2000) : 		22 03 10.7727465312 +18 53 03.549393384 (Optical) [ 0.0213 0.0227 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		22 00 48.0717927453 +18 38 32.219124290 [ 0.0213 0.0227 90 ]
Gal coord. (ep=J2000) : 		076.7533281569711 -28.5269056004135 [ 0.0213 0.0227 90 ]
Proper motions mas/yr : 		29.766 -17.976 [0.028 0.025 90] A 2020yCat.1350....0G
Parallaxes (mas): 		20.7694 [0.0266] A 2020yCat.1350....0G
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HD 209458b NAME Osiris

References (2037 between 1850 and 2026) (Total 2037)
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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