Atmospheric Circulation of Exoplanets (2009)
Showman, Adam P., Cho, James Y-K., Menou, Kristen
We survey the basic principles of atmospheric dynamics relevant to explaining existing and future observations of exoplanets, both gas giant and terrestrial. Given the paucity of data on exoplanet...
Detecting the Wind-Driven Shapes of Extrasolar Giant Planets from Transit Photometry (2009)
Barnes, Jason W., Cooper, Curtis S., Showman, Adam P., Hubbard, William B.
Several processes can cause the shape of an extrasolar giant planet's shadow, as viewed in transit, to depart from circular. In addition to rotational effects, cloud formation, non-homogenous haze...
Generation of equatorial jets by large-scale latent heating on the giant planets (2009)
Three-dimensional numerical simulations show that large-scale latent heating resulting from condensation of water vapor can produce multiple zonal jets similar to those on the gas giants (Jupiter and...
Elemental abundances and minimum mass of heavy elements in the envelope of HD 189733b (2009)
Mousis, Olivier, Lunine, Jonathan I., Tinetti, Giovanna, Griffith, Caitlin A., Showman, Adam P., Alibert, Yann, ...
Oxygen (O) and carbon (C) have been inferred recently to be subsolar in abundance from spectra of the atmosphere of the transiting hot Jupiter HD 189733b. Yet, the mass and radius of the planet...
The 8 Micron Phase Variation of the Hot Saturn HD 149026b (2009)
Knutson, Heather A., Charbonneau, David, Cowan, Nicolas B., Fortney, Jonathan J., Showman, Adam P., Agol, Eric, ...
We monitor the star HD 149026 and its Saturn-mass planet at 8.0 micron over slightly more than half an orbit using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We find an increase...
Kaspi, Yohai, Flierl, Glenn R., Showman, Adam P.
The giant gas planets have hot convective interiors, and therefore a common assumption is that these deep atmospheres are close to a barotropic state. Here we show using a new anelastic general...
Sayanagi, Kunio M., Showman, Adam P., Dowling, Timothy E.
Three-dimensional numerical simulations of freely evolving stratified geostrophic turbulence on the β plane are presented as a simplified model of zonal jet formation on Jupiter. This study samples...
Showman, Adam P., Fortney, Jonathan J., Lian, Yuan, Marley, Mark S., Freedman, Richard S., Knutson, Heather A., ...
We present global, three-dimensional numerical simulations of HD 189733b and HD 209458b that couple the atmospheric dynamics to a realistic representation of non-gray cloud-free radiative transfer....
Multi-Wavelength Constraints on the Day-Night Circulation Patterns of HD 189733b (2008)
Knutson, Heather A., Charbonneau, David, Cowan, Nicolas B., Fortney, Jonathan J., Showman, Adam P., Agol, Eric, ...
We present new Spitzer observations of the phase variation of the hot Jupiter HD 189733b in the MIPS 24 micron bandpass, spanning the same part of the planet's orbit as our previous observations in...
Showman, Adam P., Cooper, Curtis S., Fortney, Jonathan J., Marley, Mark S.
We present global, three-dimensional numerical simulations of the atmospheric circulation on HD 209458b and HD 189733b and calculate the infrared spectra and light curves predicted by these...
Atmospheric Circulation of Hot Jupiters: A Review of Current Understanding (2007)
Showman, Adam P., Menou, Kristen, Cho, James Y-K.
Hot Jupiters are new laboratories for the physics of giant planet atmospheres. Subject to unusual forcing conditions, the circulation regime on these planets may be unlike anything known in the Solar...
Atmospheric dynamics of Pegasi planets (2007)
Showman, Adam P., Cooper, Curtis S.
We present three-dimensional numerical simulations of the atmospheric dynamics of close-orbiting planets such as HD209458b. Our simulations show that winds of several km/sec and day-night temperature...
A map of the day-night contrast of the extrasolar planet HD 189733b (2007)
Knutson, Heather A., Charbonneau, David, Allen, Lori E., Fortney, Jonathan J., Agol, Eric, Cowan, Nicolas B., ...
"Hot Jupiter" extrasolar planets are expected to be tidally locked because they are close (
Cooper, Curtis S., Showman, Adam P.
Chemical equilibrium considerations suggest that, assuming solar elemental abundances, carbon on HD 209458b is sequestered primarily as carbon monoxide (CO) and methane (CH4). The relative mole...
Resolving the Surfaces of Extrasolar Planets With Secondary Eclipse Light Curves (2006)
Williams, Peter K. G., Charbonneau, David, Cooper, Curtis S., Showman, Adam P., Fortney, Jonathan J.
We present a method that employs the secondary eclipse light curves of transiting extrasolar planets to probe the spatial variation of their thermal emission. This technique permits an observer to...
Dynamic Meteorology at the Photosphere of HD 209458b (2005)
Cooper, Curtis S., Showman, Adam P.
We calculate the meteorology of the close-in transiting extrasolar planet HD 209458b using a global, three-dimensional atmospheric circulation model. Dynamics are driven by perpetual irradiation of...
Evolution of "51Peg b-like" Planets (2002)
Guillot, Tristan, Showman, Adam P.
About one-quarter of the extrasolar giant planets discovered so far have orbital distances smaller than 0.1 AU. These ``51Peg b-like'' planets can now be directly characterized, as shown by the...
Atmospheric Circulation and Tides of "51Peg b-like" Planets (2002)
Showman, Adam P., Guillot, Tristan
We examine the properties of the atmospheres of extrasolar giant planets at orbital distances smaller than 0.1 AU from their stars. We show that these ``51Peg b-like'' planets are rapidly...