HH 30：正在形成行星的恒星系统
(原标题: HH 30: A Star System with Planets Now Forming)
2025-02-19
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恒星和行星是如何形成的？詹姆斯·韦伯太空望远镜与哈勃和地球上的ALMA合作，在原行星系统赫比格-哈罗30中发现了新的线索。观测结果显示，大的尘埃颗粒更集中在一个中央圆盘上，在那里它们可以形成行星。韦伯拍摄的这张特色图像显示了活跃HH-30系统的许多属性。粒子喷流被垂直喷出，如图所示为红色，而一个富含尘埃的黑暗圆盘穿过中心，阻挡了来自恒星或仍在那里形成的恒星的光线。反射蓝色的尘埃在中央圆盘的上方和下方呈抛物线状，尽管目前尚不清楚为什么在左下方出现一条尾巴。研究行星是如何在HH 30中形成的，可以帮助天文学家更好地了解我们太阳系中的行星是如何形成的，包括我们的地球。
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How do stars and planets form? New clues have been found in the protoplanetary system Herbig-Haro 30 by the James Webb Space Telescope in concert with Hubble and the Earth-bound ALMA. The observations show, among other things, that large dust grains are more concentrated into a central disk where they can form planets. The featured image from Webb shows many attributes of the active HH-30 system. Jets of particles are being expelled vertically, shown in red, while a dark dust-rich disk is seen across the center, blocking the light from the star or stars still forming there. Blue-reflecting dust is seen in a parabolic arc above and below the central disk, although why a tail appears on the lower left is currently unknown. Studying how planets form in HH 30 can help astronomers better understand how planets in our own Solar System once formed, including our Earth.