Õòîíè÷åñêàÿ ïëàíåòà
Þïèòåð, ïîòåðÿâøèé ñâîþ ãàçîâóþ îáîëî÷êó, èëè õòîíè÷åñêàÿ ïëàíåòà (àíãë. Chthonian planet) â ãèïîòåòè÷åñêèé êëàññ ýêçîïëàíåò, êîòîðûå îáðàçîâàëèñü â ðåçóëüòàòå óëåòó÷èâàíèÿ ãàçîâ èç àòìîñôåðû ãàçîâîãî ãèãàíòà. Òàêîå óëåòó÷èâàíèå ïðîèñõîäèò ó ãîðÿ÷èõ þïèòåðîâ èç-çà ñèëüíîé áëèçîñòè ê çâåçäå â ïëàíåòà ïîñòåïåííî òåðÿåò ñâîþ àòìîñôåðó.  ðåçóëüòàòå îò ãàçîâîãî ãèãàíòà îñòà¸òñÿ òîëüêî íåáîëüøîå êàìåííîå èëè ìåòàëëè÷åñêîå ÿäðî, è ïëàíåòà ïåðåõîäèò â êëàññ ïëàíåò çåìíîé ãðóïïû. [1] Ïðèìåðîì ïëàíåòû, òåðÿþùåé ñâîþ ãàçîâóþ îáîëî÷êó, ÿâëÿåòñÿ HD 209458 b (Îñèðèñ). Ïîêà îíà íå îòíîñèòñÿ ê ïëàíåòàì çåìíîé ãðóïïû, íî ïåðåéä¸ò â ýòîò êëàññ â î÷åíü äàëåêîì áóäóùåì.
Áûñòðåå òåðÿþò ñâîþ îáîëî÷êó ïëàíåòû ñ ìàëîé ìàññîé èëè ñèëüíî íàãðåòûå ïëàíåòû (êîðîòêîïåðèîäè÷åñêèå ãîðÿ÷èå Þïèòåðû).
[ïðàâèòü] Îáíàðóæåííûå ïëàíåòû ýòîãî êëàññà
Ñâåðõçåìëÿ COROT-7 b, ïî âñåé âèäèìîñòè, ÿâëÿåòñÿ ïåðâîé îáíàðóæåííîé ïëàíåòîé ýòîãî êëàññà (ïëàíåòà ïðåäñòàâëÿåò ñîáîé òâ¸ðäîå ÿäðî ðàíåå ñóùåñòâîâàâøåãî ãàçîâîãî ãèãàíòà). [2]
[ïðàâèòü] Ñì. òàêæå
[ïðàâèòü] Ïðèìå÷àíèÿ
- â‘ Hébrard G., Lecavelier Des Étangs A., Vidal-Madjar A., Désert J.-M., Ferlet R. (2003), Evaporation Rate of Hot Jupiters and Formation of Chthonian Planets, Extrasolar Planets: Today and Tomorrow, ASP Conference Proceedings, Vol. 321, held 30 June â 4 July 2003, Institut dâ™astrophysique de Paris, France. Edited by Jean-Philippe Beaulieu, Alain Lecavelier des Étangs and Caroline Terquem.
- â‘ Exoplanets Exposed to the Core. AstroBiology Magazine (25 àïðåëÿ 2009). Àðõèâèðîâàíî èç ïåðâîèñòî÷íèêà 10 àïðåëÿ 2012. Ïðîâåðåíî 13 èþëÿ 2009.
