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Query : 2013MNRAS.432.2917P |
2013MNRAS.432.2917P - Mon. Not. R. Astron. Soc., 432, 2917-2944 (2013/July-2)
The prevalence of dust on the exoplanet HD 189733b from Hubble and Spitzer observations.
PONT F., SING D.K., GIBSON N.P., AIGRAIN S., HENRY G. and HUSNOO N.
Abstract (from CDS):
The combined spectrum is very different from the predictions of cloud-free models for hot Jupiters: it is dominated by Rayleigh scattering over the whole visible and near-infrared range, the only detected features being narrow sodium and potassium lines. We interpret this as the signature of a haze of condensate grains extending over at least five scaleheights. We show that a dust-dominated atmosphere could also explain several puzzling features of the emission spectrum and phase curves, including the large amplitude of the phase curve at 3.6µm, the small hotspot longitude shift and the hot mid-infrared emission spectrum. We discuss possible compositions and derive some first-order estimates for the properties of the putative condensate haze/clouds. We finish by speculating that the dichotomy between the two observationally defined classes of hot Jupiter atmospheres, of which HD 189733b and HD 209458b are the prototypes, might not be whether they possess a temperature inversion, but whether they are clear or dusty. We also consider the possibility of a continuum of cloud properties between hot Jupiters, young Jupiters and L-type brown dwarfs.
Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)
Journal keyword(s): techniques: spectroscopic - planets and satellites: atmospheres - stars: individual: HD 189733 - planetary systems
Simbad objects: 11
Number of rows : 11 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | WASP-12b | Pl | 06 30 32.7966092352 | +29 40 20.263502460 | ~ | 763 | 1 | |||||
2 | GJ 570 D | BD* | 14 57 14.96256 | -21 21 47.7504 | T8 | 225 | 1 | |||||
3 | * eta CrB C | BD* | 15 23 22.63488 | +30 14 56.2092 | L8V | 105 | 1 | |||||
4 | GJ 618.1 B | BD* | 16 20 26.1629452420 | -04 16 31.694082465 | 18.49 | L2.4V | 23 | 0 | ||||
5 | NAME V672 Lyr b | Pl | 19 04 09.8515616256 | +36 37 57.446680296 | ~ | 339 | 1 | |||||
6 | HD 189733b | Pl | 20 00 43.7129433648 | +22 42 39.073143456 | ~ | 1434 | 1 | |||||
7 | HD 189733 | BY* | 20 00 43.7129433648 | +22 42 39.073143456 | 9.241 | 8.578 | 7.648 | 7.126 | 6.68 | K2V | 895 | 1 |
8 | HD 209458b | Pl | 22 03 10.7727465312 | +18 53 03.549393384 | ~ | 1858 | 1 | |||||
9 | HD 218396d | Pl | 23 07 28.7157209544 | +21 08 03.310767492 | ~ | 238 | 1 | |||||
10 | HD 218396c | Pl | 23 07 28.7157209544 | +21 08 03.310767492 | ~ | 260 | 1 | |||||
11 | HD 218396 | El* | 23 07 28.7157209544 | +21 08 03.310767492 | 6.21 | 5.953 | F0+VkA5mA5 | 1138 | 0 |
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