2006A&A...458L..13C

Query : 2006A&A...458L..13C

2006A&A...458L..13C - Astronomy and Astrophysics, volume 458L13-16 (2006/11-1)

Stellar X-ray heating of planet atmospheres.

CECCHI-PESTELLINI C., CIARAVELLA A. and MICELA G.

Abstract (from CDS):

To investigate the effects of the stellar X-ray irradiation on planet atmospheres, we study the X-ray transfer and energy deposition in a hydrogen rich gas. We construct an accurate X-ray transfer model taking both photoionization and Compton scattering into account; the electron energy deposition is followed by tracking the discrete exchange processes between electrons and the gas mixture. Exospheric heating rates are derived as functions of the pressure in model atmospheres using a wide range of X-ray luminosity, spectral hardness representative of different stellar ages, and distances from the parent star. The computed heating rates suggest that X-ray irradiation might be an important heating source in planetary exospheres even at large distances from the parent star.

Abstract Copyright: ∼

Journal keyword(s): planetary systems - X-rays: stars - radiative transfer

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 : 2006A&A...458L..13C

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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Hierarchy : number of linked objects
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Identifiers (2) :
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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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HD 209458b

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