2017MNRAS.470.4557H

Query : 2017MNRAS.470.4557H

2017MNRAS.470.4557H - Mon. Not. R. Astron. Soc., 470, 4557-4563 (2017/October-1)

A new statistical method for characterizing the atmospheres of extrasolar planets.

HENDERSON C.S., SKEMER A.J., MORLEY C.V. and FORTNEY J.J.

Abstract (from CDS):

By detecting light from extrasolar planets, we can measure their compositions and bulk physical properties. The technologies used to make these measurements are still in their infancy, and a lack of self-consistency suggests that previous observations have underestimated their systemic errors. We demonstrate a statistical method, newly applied to exoplanet characterization, which uses a Bayesian formalism to account for underestimated errorbars. We use this method to compare photometry of a substellar companion, GJ 758b, with custom atmospheric models. Our method produces a probability distribution of atmospheric model parameters including temperature, gravity, cloud model (fsed) and chemical abundance for GJ 758b. This distribution is less sensitive to highly variant data and appropriately reflects a greater uncertainty on parameter fits.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: statistical - planets and satellites: atmospheres - planets and satellites: atmospheres

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 182488B BD* 19 23 34.0227 +33 13 19.041           T9 79 0

Query : 2017MNRAS.470.4557H

Basic data :
HD 182488B -- Brown Dwarf
Other object types: otypes_help 		** (**,WDS), * (GJ,HD), BD* (2009ApJ)
ICRS coord. (ep=J2000) : 		19 23 34.0227 +33 13 19.041 (Near-IR) [ ] C 2012ApJS..201...19D
FK4 coord. (ep=B1950 eq=1950) : 		19 21 40.7725 +33 07 17.415 [ ]
Gal coord. (ep=J2000) : 		066.0764796 +08.3832096 [ ]
Proper motions mas/yr : 		83.3418 162.235 [0.141652 0.275744 90] ~ 2012ApJS..201...19D
Parallaxes (mas): 		63.45 [0.35] ~ 2012ApJS..201...19D
Spectral type: 		T9 E ~
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Identifiers (4) :
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** THA 1B GJ 758 B HD 182488B WDS J19236+3313B

References (79 between 1850 and 2026) (Total 79)
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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GJ 758 B HD 182488B WDS J19236+3313B

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