2013MNRAS.430.3422A

Query : 2013MNRAS.430.3422A

2013MNRAS.430.3422A - Mon. Not. R. Astron. Soc., 430, 3422-3431 (2013/April-3)

Thermal emission at 3.6-8 µm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star.

ANDERSON D.R., SMITH A.M.S., MADHUSUDHAN N., WHEATLEY P.J., COLLIER CAMERON A., HELLIER C., CAMPO C., GILLON M., HARRINGTON J., MAXTED P.F.L., POLLACCO D., QUELOZ D., SMALLEY B., TRIAUD A.H.M.J. and WEST R.G.

Abstract (from CDS):

We report detection of thermal emission from the exoplanet WASP-19b at 3.6, 4.5, 5.8 and 8.0 µm. We used the InfraRed Array Camera on the Spitzer Space Telescope to observe two occultations of WASP-19b by its host star. We combine our new detections with previous measurements of WASP-19b's emission at 1.6 and 2.09µm to construct a spectral energy distribution of the planet's dayside atmosphere. By comparing this with model-atmosphere spectra, we find that the dayside atmosphere of WASP-19b lacks a strong temperature inversion. As WASP-19 is an active star (logR'HK = -4.50±0.03), this finding supports the hypothesis of Knutson, Howard and Isaacson that inversions are suppressed in hot Jupiters orbiting active stars. The available data are unable to differentiate between a carbon-rich and an oxygen-rich atmosphere.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): methods: data analysis - techniques: photometric - occultations - planets and satellites: atmospheres - planets and satellites: individual: WASP-19b - stars: individual: WASP-19

Simbad objects: 11

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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 HD 10069 SB* 01 37 25.0332798696 -45 40 40.374717456   9.74 9.30     F6IV/V 230 1
2 BD+57 793 * 04 21 52.7048156328 +57 49 01.889294952   10.27 9.85     F5V 152 2
3 BD+57 793b Pl 04 21 52.7048156328 +57 49 01.889294952           ~ 217 1
4 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 763 1
5 WASP-19 EB* 09 53 40.0765648584 -45 39 33.057187596   13.05 12.31 12.12 11.35 G8V 182 2
6 WASP-19b Pl 09 53 40.0765648584 -45 39 33.057187596           ~ 370 1
7 CD-27 10695 * 15 59 50.9491505016 -28 03 42.312819096   11.83 11.59 11.31 10.92 F4 120 1
8 TYC 2620-648-1 * 17 53 13.0489562760 +37 12 42.586493328   12.112 11.592     F8 46 2
9 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 306 2
10 NAME Cepheus Cloud SFR 22 00.0 +76 30           ~ 146 0
11 NGC 7538 OpC 23 13 37 +61 30.0           ~ 881 1

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