The Phase-Dependent Infrared Brightness of the Extrasolar Planet ʊ Andromedae b
The Phase-Dependent Infrared Brightness of the Extrasolar Planet ʊ Andromedae b
复制标题
太阳系外行星 ʊ 仙女座 b 的相位相关红外亮度
DOI：
10.1126/science.1133904
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发表时间：
2006
期刊：
影响因子：
56.9
通讯作者：
L. J. Richardson
中科院分区：
文献类型：
--
作者：
J. Harrington;B. Hansen;S. Luszcz;S. Seager;D. Deming;K. Menou;J. Cho;L. J. Richardson
恒星υ仙女座由三颗已知行星环绕运行，其中最内部的行星的轨道周期为4.617天，质量至少为木星的0.69%。这颗行星距离它的主恒星足够近，以至于它吸收的辐射超过了它内部的热量损失。在这里，我们给出了用斯皮策太空望远镜获得的该系统的24微米光曲线。它显示出与最内侧行星轨道运动的位相变化，表明这类行星具有明显的热的亚恒星(白天)和冷的反恒星(夜间)面。
The star υ Andromedae is orbited by three known planets, the innermost of which has an orbital period of 4.617 days and a mass at least 0.69 that of Jupiter. This planet is close enough to its host star that the radiation it absorbs overwhelms its internal heat losses. Here, we present the 24-micrometer light curve of this system, obtained with the Spitzer Space Telescope. It shows a variation in phase with the orbital motion of the innermost planet, demonstrating that such planets possess distinct hot substellar (day) and cold antistellar (night) faces.