Forming Exoplanet PDS 70b (Illustration) : 無料・フリー素材/写真
Forming Exoplanet PDS 70b (Illustration) / NASA Hubble
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | This illustration of the newly forming exoplanet PDS 70b shows how material may be falling onto the giant world as it builds up mass. Using Hubble’s ultraviolet light sensitivity, researchers got a unique look at radiation from extremely hot gas falling onto the planet, allowing them to directly measure the planet’s mass growth rate for the first time.The planet PDS 70b is encircled by its own gas-and-dust disk that’s siphoning material from the vastly larger circumstellar disk in this solar system. The researchers hypothesize that magnetic field lines extend from its circumplanetary disk down to the exoplanet’s atmosphere and are funneling material onto the planet’s surface. The illustration shows one possible magnetospheric accretion configuration, but the magnetic field’s detailed geometry requires future work to probe.The remote world has already bulked up to five times the mass of Jupiter over a period of about 5 million years, but is anticipated to be in the tail end of its formation process. PDS 70b orbits the orange dwarf star PDS 70 approximately 370 light-years from Earth in the constellation Centaurus.Credit: NASA, ESA, STScI, Joseph Olmsted (STScI)For more information, visit: hubblesite.org/contents/news-releases/2021/news-2021-021Find us on Twitter, Instagram, Facebook and YouTube |
| 撮影日 | 2021-04-20 09:41:22 |
| 撮影者 | NASA Hubble |
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