ВНИМАНИЕ! На форуме начался конкурс - астрофотография месяца ИЮЛЬ!
0 Пользователей и 1 Гость просматривают эту тему.
Ее тепловой режим - средний между тепловыми режимами Венеры и Меркурия. Так что спутники будут каменными и безжизненными, вроде Меркурия или Луны.Но до прохладных гигантов осталось совсем немного, да
Its periastron distance of 0.36 astronomical units is by far the largest of all transiting planets, yielding a ‘temperate’ photospheric temperature estimated to be between 250 and 430 K.
Effective temperatures of Corot-9b have been calculated using a black-body approximation for the host-star emission and a uniform redistribution of absorbed heat energy between the planet’s day and night side. Following the planet classification based on temperature regimes by Sudarsky et al. , there are two possible outcomes for CoRoT-9b: For one, it may be among class III planets with temperatures > 350K, which have clear atmosphere without cloud-cover and low Bond-albedos of 0.09-0.12. With this albedo, CoRoT-9b’s temperatures would range from 380K at apoastron to 430K at periastron. CoRoT-9b may also be among Class II planets, with much lower temperatures (250 - 290 K) due to a significantly higher Bond-albedo of ~0.8 from the condensation of HO in the upper troposphere. The strong inverse dependency of the albedo on temperatures 14 near 350K makes a locking into either class II or class III possible. Transits occur not far from periastron, hence temperatures during transit would be only slightly (< 30K) lower than at periastron. Day/night temperature variations are expected to be very small: For one, from its low tidal dissipation we estimate a timescale for rotational slow-down on the order of 100 Gyr; so its rotation should still be close to the unknown, but likely rapid primordial rate. For another, the planet’s radiative timescale at the photosphere, which is inversely proportional to the cube of the photospheric temperature, should be around 50 times longer than for a standard Hot-Giant planet with a 1500K irradiation temperature.
Ну хорошо. Давайте тупо посчитаем эффективную температуру Венеры.
Планета, конечно, далеко не "нормальная", поскольку в таких температурных условиях планета-гигант не может образоваться. Обычный "тёплый" юпитер, доплеровской методикой подобных планет обнаружено уже множество .
Как уже много раз говорилось в теме "Открытия новых Экзопланет", планета могла образоваться дальше от звезды, а затем мигрировать.