Images of embedded Jovian planet formation at a wide separation around AB Aurigae
Images of embedded Jovian planet formation at a wide separation around AB Aurigae
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DOI：
10.1038/s41550-022-01634-x
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发表时间：
2022-04
期刊：
影响因子：
14.1
通讯作者：
T. Currie;Kellen D. Lawson;G. Schneider;W. Lyra;J. Wisniewski;C. Grady;O. Guyon;Motohide Tamura-
中科院分区：
文献类型：
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作者：
T. Currie;Kellen D. Lawson;G. Schneider;W. Lyra;J. Wisniewski;C. Grady;O. Guyon;Motohide Tamura-
嵌入在婴儿恒星周围的圆盘中的原行星的直接图像提供了理解木星等气体巨行星形成的关键。使用斯巴鲁望远镜和哈勃太空望远镜，我们发现了一个木星原行星围绕御夫座AB轨道的证据，在一个广泛的投影分离（~93 Au），可能负责多个行星诱导的功能在磁盘。它的辐射是可再生的，是来自嵌入的原行星的再处理辐射。我们还确定了两个结构位于430-580 Au是行星形成的候选网站。这些数据揭示了行星形成的嵌入阶段和原行星的发现宽，>50 Au分离的特点，大多数成像系外行星。由于至少有一颗团块状的原行星和多个旋臂，AB Aur系统也可能提供了一个长期以来被认为是木星形成的经典模型的替代方案的证据，即盘（引力）不稳定性。
Direct images of protoplanets embedded in disks around infant stars provide the key to understanding the formation of gas giant planets such as Jupiter. Using the Subaru Telescope and the Hubble Space Telescope, we find evidence for a Jovian protoplanet around AB Aurigae orbiting at a wide projected separation (~93 au), probably responsible for multiple planet-induced features in the disk. Its emission is reproducible as reprocessed radiation from an embedded protoplanet. We also identify two structures located at 430–580 au that are candidate sites of planet formation. These data reveal planet formation in the embedded phase and a protoplanet discovery at wide, >50 au separations characteristic of most imaged exoplanets. With at least one clump-like protoplanet and multiple spiral arms, the AB Aur system may also provide the evidence for a long-considered alternative to the canonical model for Jupiter’s formation, namely disk (gravitational) instability.