2016ApJ...832..191N


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.18CEST16:00:01

2016ApJ...832..191N - Astrophys. J., 832, 191-191 (2016/December-1)

VLT FORS2 comparative transmission spectroscopy: detection of Na in the atmosphere of WASP-39b from the ground.

NIKOLOV N., SING D.K., GIBSON N.P., FORTNEY J.J., EVANS T.M., BARSTOW J.K., KATARIA T. and WILSON P.A.

Abstract (from CDS):

We present transmission spectroscopy of the warm Saturn-mass exoplanet WASP-39b made with the Very Large Telescope FOcal Reducer and Spectrograph (FORS2) across the wavelength range 411-810 nm. The transit depth is measured with a typical precision of 240 parts per million (ppm) in wavelength bins of 10 nm on a V = 12.1 mag star. We detect the sodium absorption feature (3.2σ) and find evidence of potassium. The ground-based transmission spectrum is consistent with Hubble Space Telescope (HST) optical spectroscopy, supporting the interpretation that WASP-39b has a largely clear atmosphere. Our results demonstrate the great potential of the recently upgraded FORS2 spectrograph for optical transmission spectroscopy, with which we obtained HST-quality light curves from the ground.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): planets and satellites: atmospheres - stars: individual: WASP-39 - techniques: photometric - techniques: spectroscopic - techniques: spectroscopic

Simbad objects: 7

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Number of rows : 7

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-19b Pl 09 53 40.0764883458 -45 39 33.055979403           ~ 283 1
2 WASP-31b Pl 11 17 45.3578468391 -19 03 17.216528280           ~ 97 1
3 WASP-39b Pl 14 29 18.4151765921 -03 26 40.203046112           ~ 107 1
4 WASP-39 * 14 29 18.4151765921 -03 26 40.203046112   12.93 12.09 12.17 11.29 ~ 36 1
5 2MASS J14292245-0321010 PM* 14 29 22.4486850650 -03 21 01.127185262           ~ 2 0
6 HD 189733b Pl 20 00 43.7130382888 +22 42 39.071811263           ~ 1168 1
7 WASP-6b Pl 23 12 37.7368657624 -22 40 26.277489164           ~ 106 1

    Equat.    Gal    SGal    Ecl

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2021.05.18-16:00:01

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