2022ApJ...939...95M

Query : 2022ApJ...939...95M

2022ApJ...939...95M - Astrophys. J., 939, 95 (2022/November-2)

Transverse Vector Decomposition Method for Analytical Inversion of Exoplanet Transit Spectra.

MATCHEV K.T., MATCHEVA K. and ROMAN A.

Abstract (from CDS):

We develop a new method for analytical inversion of binned exoplanet transit spectra and for retrieval of planet parameters. The method has a geometrical interpretation and treats each observed spectrum as a single vector $\overrightarrow{r}$ in the multidimensional spectral space of observed bin values. We decompose the observed $\overrightarrow{r}$ into two orthogonal components: a wavelength-independent component ${\overrightarrow{r}}_{\parallel }$ corresponding to the spectral mean across all observed bins, and a transverse component ${\overrightarrow{r}}_{\perp }$ that is wavelength dependent and contains the relevant information about the atmospheric chemistry. The method allows us to extract, without any prior assumptions or additional information, the relative mass (or volume) mixing ratios of the absorbers in the atmosphere, the scale height to stellar radius ratio, H/RS, and the atmospheric temperature. The method is illustrated and validated with several examples of increasing complexity.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet atmospheres - Exoplanet atmospheric composition - Transits - Transmission spectroscopy - Radiative transfer - Analytical mathematics

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 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 847 1

Query : 2022ApJ...939...95M

Basic data :
WASP-12b -- Extra-solar Planet
Other object types: otypes_help 		Pl (), Pl? (TOI,WASP)
ICRS coord. (ep=J2000) : 		06 30 32.7966092352 +29 40 20.263502460 (Optical) [ 0.0153 0.0132 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		06 27 21.2768800507 +29 42 26.838969205 [ 0.0153 0.0132 90 ]
Gal coord. (ep=J2000) : 		184.0830946617460 +08.9363998587517 [ 0.0153 0.0132 90 ]
Proper motions mas/yr : 		-1.519 -6.761 [0.019 0.015 90] A 2020yCat.1350....0G
Parallaxes (mas): 		2.4213 [0.0166] A 2020yCat.1350....0G
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Identifiers (3) :
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TOI-1725b TOI-1725.01 WASP-12b

References (847 between 1850 and 2026) (Total 847)
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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