منابع مشابه
Rendering lunar eclipses
Johannes Kepler first attributed the visibility of lunar eclipses to refraction in the Earth’s atmosphere in his Astronomiae Pars Optica in 1604. We describe a method for rendering images of lunar eclipses including color contributions due to refraction, dispersion, and scattering in the Earth’s atmosphere. We present an efficient model of refraction and scattering in the atmosphere, including ...
متن کاملA review of past eclipses
EE Cep is an eclipsing binary with a period of 5.6 years. The next eclipse will occur soon, in May–June 2003, and all available past eclipses were collected and briefly analysed. EE Cep shows very large changes of the shape and the depth of minima during different eclipses, however it is possible to single out some persistent features. The analysis suggests that the eclipsing body should be a l...
متن کاملTwo 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...
متن کاملHot Jupiters: Lands of Plenty
In late August 2005, 80 researchers from more than 15 countries convened for a 4-day conference entitled “The Tenth Anniversary of 51 Peg b: Status and Prospects for Hot Jupiter Studies”. The meeting was held at l’Observatoire de Haute-Provence, the location of the 1.93-m telescope and ELODIE spectrograph used to discover the planetary companion to 51 Peg roughly 10 years ago. I summarize sever...
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: Astronomische Nachrichten
سال: 1886
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18861132403