ldn1471：风吹星腔
(原标题: LDN 1471: A Windblown Star Cavity)
2024-11-17
浏览次数: 12
这种不寻常的抛物线结构的原因是什么？这个被照亮的空腔，被称为LDN 1471，是由一颗新形成的恒星创造的，它被看作是抛物线顶端的明亮光源。这颗原恒星正在经历恒星外流，然后与英仙座分子云中的周围物质相互作用，使其变亮。我们只能看到空洞的一面，另一面被黑暗的尘埃所掩盖。抛物线形状是由恒星风吹出的空腔随着时间的推移而变宽造成的。在原恒星的两侧还可以看到两个额外的结构；这些被称为赫比格-哈罗天体，也是由流出物与周围物质的相互作用引起的。然而，是什么原因导致了腔壁上的条纹仍然未知。这张特色图片是由美国宇航局和欧洲航天局的哈勃太空望远镜在斯皮策太空望远镜的原始探测之后拍摄的。探索你的宇宙：随机APOD生成器
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What is the cause of this unusual parabolic structure? This illuminated cavity, known as LDN 1471, was created by a newly forming star, seen as the bright source at the peak of the parabola. This protostar is experiencing a stellar outflow which is then interacting with the surrounding material in the Perseus Molecular Cloud, causing it to brighten. We see only one side of the cavity -- the other side is hidden by dark dust. The parabolic shape is caused by the widening of the stellar-wind blown cavity over time. Two additional structures can also be seen either side of the protostar; these are known as Herbig-Haro objects, again caused by the interaction of the outflow with the surrounding material. What causes the striations on the cavity walls, though, remains unknown. The featured image was taken by NASA and ESA’s Hubble Space Telescope after an original detection by the Spitzer Space Telescope. Explore Your Universe: Random APOD Generator