MACS0647：韦伯早期宇宙的引力透镜
(原标题: MACS0647: Gravitational Lensing of the Early Universe by Webb)
2023-01-18
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MACS0647星系团的引力透镜效应——巨大的前景星系团扭曲并透镜了远处背景星系沿着视线发出的光——在詹姆斯韦伯太空望远镜（JWST）最近拍摄的这张多色红外图像中得到了生动的展示。特别是，背景源MACS0647-JD被星团透镜了三次。当第一次被哈勃太空望远镜发现时，MACS0647-JD被观察到是一个无定形的斑点。然而，通过韦伯望远镜，这个单一的来源被揭示为一对或一小群星系。MACS0647-JD天体的颜色也不同，这可能表明这些星系的年龄或尘埃含量存在差异。这些新图像提供了宇宙大爆炸后仅仅几亿年后的星系的罕见例子。探索你的宇宙：随机APOD生成器
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Gravitational lensing by the galaxy cluster MACS0647 -- in which the massive foreground cluster distorts and lenses the light emitted by distant background galaxies along the line of sight — is on vivid display here in this recent multi-color infrared image from the James Webb Space Telescope (JWST). In particular, the background source MACS0647-JD is seen to be lensed three times by the cluster. When first discovered with the Hubble Space Telescope, MACS0647-JD was observed as an amorphous blob. With Webb though, this single source is revealed to be a pair or small group of galaxies. The colors of the MACS0647-JD objects are different as well -- indicating differences potentially in the age or dust content of these galaxies. These new images provide rare examples of galaxies in an era only a few 100 million years after the Big Bang. Explore Your Universe: Random APOD Generator