昴宿星：七尘姐妹
(原标题: The Pleiades: Seven Dusty Sisters)
2024-01-29
浏览次数: 20
著名的昴宿星团正在缓慢地摧毁一部分经过的气体和尘埃云。昴宿星团是地球天空中最明亮的疏散星团，几乎在任何偏北的地方都可以用肉眼看到。在过去的10万年里，一个由气体和尘埃组成的区域偶然穿过昴宿星团，并在恒星和尘埃之间引起强烈的反应。经过的星云可能是拉德克利夫波的一部分，拉德克利夫波是一种新发现的气体和尘埃结构，连接着银河系附近的几个恒星形成区域。来自恒星光线的压力明显排斥周围蓝色反射星云中的尘埃，较小的尘埃颗粒被排斥得更强烈。短期的结果是，部分尘埃云变成了丝状和分层。这张特色的深度图像包含了近9个小时的曝光，是去年在美国犹他州的犹他州沙漠远程天文台拍摄的。
查看原文解释
The well-known Pleiades star cluster is slowly destroying part of a passing cloud of gas and dust. The Pleiades is the brightest open cluster of stars on Earth's sky and can be seen from almost any northerly location with the unaided eye. Over the past 100,000 years, a field of gas and dust is moving by chance right through the Pleiades star cluster and is causing a strong reaction between the stars and dust. The passing cloud might be part of the Radcliffe wave, a newly discovered structure of gas and dust connecting several regions of star formation in the nearby part of our Milky Way galaxy. Pressure from the stars' light significantly repels the dust in the surrounding blue reflection nebula, with smaller dust particles being repelled more strongly. A short-term result is that parts of the dust cloud have become filamentary and stratified. The featured deep image incorporates nearly 9 hours of exposure and was captured from Utah Desert Remote Observatory in Utah, USA, last year.
© Craig Stocks