七尘姐妹
(原标题: Seven Dusty Sisters)
2024-09-29
浏览次数: 17
这真的是著名的昴宿星团吗？以其标志性的蓝色恒星而闻名，昴宿星团在红外光下被显示出来，周围的尘埃比恒星更耀眼。在这里，三种红外颜色被映射成视觉颜色（R=24， G=12， B=4.6微米）。这些基础图像是由美国宇航局的轨道宽视场红外探测探测器（WISE）航天器拍摄的。编号为M45，绰号七姐妹的昴宿星团碰巧位于一个经过的尘埃云中。来自昴宿星团大质量恒星的光和风优先排斥较小的尘埃颗粒，导致尘埃分层成细丝，如图所示。这张特色图片的跨度约为20光年，位于距金牛座约450光年的昴星团。
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Is this really the famous Pleiades star cluster? Known for its iconic blue stars, the Pleiades is shown here in infrared light where the surrounding dust outshines the stars. Here, three infrared colors have been mapped into visual colors (R=24, G=12, B=4.6 microns). The base images were taken by NASA's orbiting Wide Field Infrared Survey Explorer (WISE) spacecraft. Cataloged as M45 and nicknamed the Seven Sisters, the Pleiades star cluster is by chance situated in a passing dust cloud. The light and winds from the massive Pleiades stars preferentially repel smaller dust particles, causing the dust to become stratified into filaments, as seen. The featured image spans about 20 light years at the distance of the Pleiades, which lies about 450 light years distant toward the constellation of the Bull (Taurus).