منابع مشابه
Two Classes of Hot Jupiters
We identify two classes of transiting planet, based on their equilibrium temperatures and Safronov numbers. We examine various possible explanations for the dichotomy. It may reflect the influence of planet or planetesimal scattering in determining when planetary migration stops. Another possibility is that some planets lose more mass to evaporation than others. If this evaporation process pref...
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متن کاملTwo new ” very hot Jupiters ” among the OGLE transiting candidates
As a result of a radial velocity follow-up of OGLE planetary transit candidates in Carina, we report the discovery of two new transiting planets with very short orbital periods: OGLE-TR-113 with m=1.35 ±0.22M Jup , r=1.08 −0.13 R Jup , P=1.69 day. These detections bring to three the number of known " very hot Jupiters " (Jovian exoplanets like OGLE-TR-56 with periods much smaller than 3 days), ...
متن کاملVisual perception of markings.
Markings, such as designs, writings, diagrams, and depictions, are expressive and communicative human artifacts. The conventional assumption that findings from the study of the visual perception of markings-in particular, of pictures-can be generalized to real-world perception is examined and found to be false. The processes involved in the visual perception of the world and in the visual perce...
متن کاملAtmospheric escape from hot Jupiters
The extra-solar planet HD209458b has been found to have an extended atmosphere of escaping atomic hydrogen (Vidal-Madjar et al. 2003), suggesting that “hot Jupiters” closer to their parent stars could evaporate. Here we estimate the atmospheric escape (so called evaporation rate) from hot Jupiters and their corresponding life time against evaporation. The calculated evaporation rate of HD209458...
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ژورنال
عنوان ژورنال: Nature
سال: 1915
ISSN: 0028-0836,1476-4687
DOI: 10.1038/096172a0