The Seven Sisters, also known as the Pleiades, seem to float on a bed of feathers in a new infrared image from NASA's Spitzer Space Telescope. Clouds of dust sweep around the stars, swaddling them in a cushiony veil.
The view is quite different from the usual observation of these stars in the western sky. Right now, the famous family of stars is "stepping out" in the evening skies with a very bright and dazzling Venus. During the period from around April 10 to 13, the Pleiades shine like a cluster of diamonds just above Venus. On April 19, the crescent moon will join the party, sliding between Venus and the Pleiades for a special viewing.
For more information, read The Seven Sisters Pose for Spitzer - and for You!
Image credit: NASA
昴星团的最新红外图，4月10日到13日正处在金星上方附近。
说明：疾驰在距离我们近400光年远的宇宙尘埃中，可爱的昴星团或者说七姐妹星团在天文影像中都是以其壮观的蓝色反射星云而闻名。在可见光波段下，星光被尘埃雕刻并反射，但在这张由斯皮策太空望远镜拍摄的红外影像中，尘埃本身发出了光芒。这张假彩色影像在天空中覆盖大约1度，也就是说在昴星团内横跨7光年，在影像中黄色和红色部分是尘埃中最致密的区域。经过对这片接近年轻星团的探索后，斯皮策收集到的数据显示了其内有许多温度低质量小的恒星，褐矮星或者说是衰败的恒星，可能还有行星状碎片盘。想要在今晚看到昴星团吗？朝金星附近看去，它就位于日落后西方的明亮的昏星旁。（翻译：陈昌）
译文来自：http://www.bjp.org.cn/apod/2007-04/13/content_7519.htm
[ 本帖最后由 活动星图 于 2007-4-16 18:20 编辑 ] |
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