Possible Solutions to the Radius Anomalies of Transiting Giant Planets

@article{Burrows2006PossibleST,
  title={Possible Solutions to the Radius Anomalies of Transiting Giant Planets},
  author={Adam Burrows and Ivan Huben{\'y} and J{\'a}n Budaj and W. B. Hubbard},
  journal={The Astrophysical Journal},
  year={2006},
  volume={661},
  pages={502-514}
}
We calculate the theoretical evolution of the radii of all 14 of the known transiting extrasolar giant planets (EGPs) for a variety of assumptions concerning atmospheric opacity, dense inner core masses, and possible internal power sources. We incorporate the effects of stellar irradiation and customize such effects for each EGP and star. Looking collectively at the family as a whole, we find that there are in fact two radius anomalies to be explained. Not only are the radii of a subset of the… Expand
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References

SHOWING 1-10 OF 61 REFERENCES
On the Radii of Extrasolar Giant Planets
We have computed evolutionary models for extrasolar planets that range in mass from 0.1MJ to 3.0MJ and that range in equilibrium temperature from 113 to 2000 K. We present four sequences of models,Expand
A correlation between the heavy element content of transiting extrasolar planets and the metallicity of their parent stars
Context. Nine extrasolar planets with masses between 110 and 430M⊕ are known to transit their star. The knowledge of their masses and radii allows an estimate of their composition, but uncertaintiesExpand
On the Radii of Close-in Giant Planets.
TLDR
It is found that HD 209458b must be a hydrogen-rich gas giant and the large radius of a close-in gas giant is not due to the thermal expansion of its atmosphere but to the high residual entropy that remains throughout its bulk by dint of its early proximity to a luminous primary. Expand
The Evolution of Irradiated Planets: Application to Transits
Extending the theory that we derived recently for HD 209458b to different cases of strongly irradiated gaseous exoplanets, we have calculated the consistent evolution of a new transiting planet,Expand
A COMPARISON OF OBSERVATIONALLY DETERMINED RADII WITH THEORETICAL RADIUS PREDICTIONS FOR SHORT-PERIOD TRANSITING EXTRASOLAR PLANETS
Two extrasolar planets, HD 209458b and TrES-1, are currently known to transit bright parent stars for which physical properties can be accurately determined. The two transiting planets have veryExpand
Evolution of "51 Pegasus b-like" planets
About one-quarter of the extrasolar giant planets discovered so far have orbital distances smaller than 0.1 AU. These “51 Peg b-like” planets can now be directly characterized, as shown by the planetExpand
A Theory for the Radius of the Transiting Giant Planet HD 209458B
Using a full frequency-dependent atmosphere code that can incorporate irradiation by a central primary star, we calculate self-consistent boundary conditions for the evolution of the radius of theExpand
THEORETICAL RADII OF TRANSITING GIANT PLANETS: THE CASE OF OGLE-TR-56b
We calculate radius versus age trajectories for the photometrically selected transiting extrasolar giant planet, OGLE-TR-56b, and find agreement between theory and observation, without introducing anExpand
Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 209458
We present evolutionary models for cool brown dwarfs and extra-solar giant planets. The models re- produce the main trends of observed methane dwarfs in near-IR color-magnitude diagrams. We alsoExpand
On the age of stars harboring transiting planets
Results of photometric surveys have brought to light the existence of a population of giant planets orbiting their host stars even closer than the hot Jupiters (HJ), with orbital periods below 3Expand
...
1
2
3
4
5
...