2020MNRAS.494.5449C


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.18CEST02:35:12

2020MNRAS.494.5449C - Mon. Not. R. Astron. Soc., 494, 5449-5472 (2020/June-1)

Detection of Na, K, and H2O in the hazy atmosphere of WASP-6b.

CARTER A.L., NIKOLOV N., SING D.K., ALAM M.K., GOYAL J.M., MIKAL-EVANS T., WAKEFORD H.R., HENRY G.W., MORRELL S., LOPEZ-MORALES M., SMALLEY B., LAVVAS P., BARSTOW J.K., GARCIA MUNOZ A., GIBSON N.P. and WILSON P.A.

Abstract (from CDS):

We present new observations of the transmission spectrum of the hot Jupiter WASP-6b both from the ground with the Very Large Telescope FOcal Reducer and Spectrograph (FORS2) from 0.45 to 0.83 µm, and space with the Transiting Exoplanet Survey Satellite from 0.6 to 1.0 µm and the Hubble Space Telescope (HST) Wide Field Camera 3 from 1.12 to 1.65 µm. Archival data from the HST Space Telescope Imaging Spectrograph (STIS) and Spitzer are also re-analysed on a common Gaussian process framework, of which the STIS data show a good overall agreement with the overlapping FORS2 data. We also explore the effects of stellar heterogeneity on our observations and its resulting implications towards determining the atmospheric characteristics of WASP-6b. Independent of our assumptions for the level of stellar heterogeneity we detect Na I, K I, and H2O absorption features and constrain the elemental oxygen abundance to a value of [O/H] ≃ -0.9 ± 0.3 relative to solar. In contrast, we find that the stellar heterogeneity correction can have significant effects on the retrieved distributions of the [Na/H] and [K/H] abundances, primarily through its degeneracy with the sloping optical opacity of scattering haze species within the atmosphere. Our results also show that despite this presence of haze, WASP-6b remains a favourable object for future atmospheric characterization with upcoming missions such as the James Webb Space Telescope.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: photometric - techniques: spectroscopic - planets and satellites: atmospheres - planets and satellites: composition - stars: activity

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 WASP-96b Pl 00 04 11.1376733184 -47 21 38.322931111           ~ 23 0
2 CPD-23 1329b Pl 06 33 24.2672798716 -23 29 10.296975033           ~ 24 0
3 WASP-31b Pl 11 17 45.3578468391 -19 03 17.216528280           ~ 97 1
4 WASP-39b Pl 14 29 18.4151765921 -03 26 40.203046112           ~ 107 1
5 HD 189733b Pl 20 00 43.7130382888 +22 42 39.071811263           ~ 1168 1
6 WASP-6b Pl 23 12 37.7368657624 -22 40 26.277489164           ~ 106 1
7 WASP-6 * 23 12 37.7368657624 -22 40 26.277489164   12.90 11.91     G8V 72 1
8 2MASS J23124095-2243232 * 23 12 40.9528699339 -22 43 23.159505423           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2021.05.18-02:35:13

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