Webb finds candidates for first young brown dwarfs outside the Milky Way : 無料・フリー素材/写真
Webb finds candidates for first young brown dwarfs outside the Milky Way / James Webb Space Telescope
| 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 | It’s giving rainbows and unicorns, like a middle school binder 🌈 Meet NGC 602, a young star cluster in the Small Magellanic Cloud (one of our satellite galaxies), where astronomers using @NASAWebb have found candidates for the first brown dwarfs outside of our galaxy. This star cluster has a similar environment to the kinds of star-forming regions that would have existed in the early Universe—with very low amounts of elements heavier than hydrogen and helium. It’s drastically different from our own solar neighborhood and close enough to study in detail. Brown dwarfs are… not quite stars, but also not quite gas giant planets either. Typically they range from about 13 to 75 Jupiter masses. They are sometimes free-floating and not gravitationally bound to a star like a planet would be. But they do share some characteristics with exoplanets, like storm patterns and atmospheric composition. @NASAHubble showed us that NGC 602 harbors some very young low-mass stars; Webb is showing us how significant and extensive objects like brown dwarfs are in this cluster. Scientists are excited to better be able to understand how they form, particularly in an environment similar to the harsh conditions of the early universe.Read more: esawebb.org/news/weic2425/ Image description: A star cluster is shown inside a large nebula of many-coloured gas and dust. The material forms dark ridges and peaks of gas and dust surrounding the cluster, lit on the inner side, while layers of diffuse, translucent clouds blanket over them. Around and within the gas, a huge number of distant galaxies can be seen, some quite large, as well as a few stars nearer to us which are very large and bright.Image Credit: ESA/Webb, NASA & CSA, P. Zeidler, E. Sabbi, A. Nota, M. Zamani (ESA/Webb) |
| 撮影日 | 2024-10-23 13:38:20 |
| 撮影者 | James Webb Space Telescope , Greenbelt, MD, USA |
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