Reference : Thermal emission at 3.6-8 micron from WASP-19b: a hot Jupiter without a stratosphere ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/107263
Thermal emission at 3.6-8 micron from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star
English
Anderson, D. R. mailto [> > > >]
Smith, A. M. S. [> > > >]
Madhusudhan, N. [> > > >]
Wheatley, P. J. [> > > >]
Collier Cameron, A. [> > > >]
Hellier, C. [> > > >]
Campo, C. [> > > >]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
Harrington, J. [> > > >]
Maxted, P. F. L. [> > > >]
Pollacco, D. [> > > >]
Queloz, D. [> > > >]
Smalley, B. [> > > >]
Triaud, A H M J [> > > >]
West, R. G. [> > > >]
1-Apr-2013
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
430
4
3422-3431
Yes (verified by ORBi)
International
0035-8711
Oxford
United Kingdom
[en] Astrophysics - Earth and Planetary Astrophysics
[en] 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 2.09 μm 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 (log R'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.
http://hdl.handle.net/2268/107263
http://adsabs.harvard.edu/abs/2013MNRAS.430.3422A

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