Reference : Spitzer Secondary Eclipses of WASP-18b
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/60743
Spitzer Secondary Eclipses of WASP-18b
English
Nymeyer, Sarah [> > > >]
Harrington, Joseph [> > > >]
Hardy, Ryan A [> > > >]
Stevenson, Kevin B [> > > >]
Campo, Christopher J [> > > >]
Madhusudhan, Nikku [> > > >]
Collier-Cameron, Andrew [> > > >]
Blecic, Jasmina [> > > >]
Bowman, William C [> > > >]
Britt, Christopher B T [> > > >]
Cubillos, Patricio [> > > >]
Hellier, Coel [> > > >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Maxted, Pierre F L [> > > >]
Hebb, Leslie [> > > >]
Wheatley, Peter J [> > > >]
Pollacco, Don [> > > >]
Anderson, David [> > > >]
1-Nov-2011
Astrophysical Journal
University of Chicago Press
742
1
35
Yes (verified by ORBi)
International
0004-637X
1538-4357
Chicago
IL
[en] Astrophysics - Earth and Planetary Astrophysics
[en] The transiting exoplanet WASP-18b was discovered in 2008 by the Wide Angle Search for Planets (WASP) project. The Spitzer Exoplanet Target of Opportunity Program observed secondary eclipses of WASP-18b using Spitzer's Infrared Array Camera (IRAC) in the 3.6-micron and 5.8-micron bands on 2008 December 20, and in the 4.5-micron and 8.0-micron bands on 2008 December 24. We report eclipse depths of 0.31+-0.02, 0.38+-0.03, 0.41+-0.02, 0.43+-0.03 %, and brightness temperatures of 2920 +- 90, 3150 +- 130, 3040 +- 130 and 2960 +- 130 K, respectively. WASP-18b is one of the hottest planets yet discovered - as hot as an M-class star. The planet's pressure-temperature profile features a thermal inversion. The observations also require WASP-18b to have near-zero albedo and almost no redistribution of energy from the day-side to the night side of the planet.
http://hdl.handle.net/2268/60743
10.1088/0004-637X/742/1/35
http://adsabs.harvard.edu/abs/2010arXiv1005.1017N

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