木星ã¨åŒã˜ã‚µã‚¤ã‚ºã§10分ã®1ã®é‡ã•ã—ã‹ãªã„ã‚ãŸã‚ã‚ã®ã‚ˆã†ãªæƒ‘星「スーパーパフ惑星ã€ãŒè¦‹ã¤ã‹ã‚‹by Hubble ESA ãŠã¨ã‚座ã®æ–¹è§’ã«åœ°çƒã‹ã‚‰ç´„212光年離れãŸä½ç½®ã«ã‚ã‚‹æ’星「WASP-107ã€ã‚’公転ã™ã‚‹å¤ªé™½ç³»å¤–惑星「WASP-107bã€ã¯ã€æœ¨æ˜Ÿã‚„土星ã¨åŒã˜å·¨å¤§ã‚¬ã‚¹æƒ‘星ã§ã™ã€‚巨大ガス惑星ã¯ã‚¬ã‚¹ã§å½¢æˆã•ã‚ŒãŸã€Œå¤–層(エンベãƒãƒ¼ãƒ—)ã€ã¨å›ºä½“コアã‹ã‚‰ãªã‚‹ã€Œä¸å¿ƒæ ¸ã€ã§æ§‹æˆã•ã‚Œã¦ã„ã‚‹ã®ã§ã™ãŒã€WASP-107bã¯éžå¸¸ã«è»½ã„ãŸã‚ã€æœ¨æ˜Ÿã¨åŒã‚µã‚¤ã‚ºã§ã‚ã‚‹ã«ã‚‚ã‹ã‹ã‚らãšè³ªé‡ã¯ã‚ãšã‹10分ã®1程度ã®ã€Œã‚¹ãƒ¼ãƒ‘ーパフ惑星ã€ã§ã‚ã‚‹ã“ã¨ãŒæ˜Žã‚‰ã‹ã«ãªã£ã¦ã„ã¾ã™ã€‚ WASP-107b's Density Is Even Lower: A Case Study for the Physics of Planetary Gas Envelope Accretion and Orbital Migration - IOPscience https://iopscience.iop.org/article/10.384
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