APOD:2015.9.24

Sweet丿Kim (金) 天王星
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发表于:2015-09-24 17:39 [只看楼主] [划词开启]

LDN 988和小伙伴

影像提供与版权: 

Rafael Rodríguez Morales

说明: 

恒星正形成于黝黑的尘埃分子云LDN 988之内。位在这幅影像中心、距离约2,000光年远的LDN 988及邻近的暗星云,是1962年由Beverly T. Lynds发现于帕洛玛天文台巡天底板中并加以编录。在窄和近红外光波段对这个暗星云所进行的探索,找到了与数十颗新恒星相关的高能激震结构和数光年宽的外泛物质。


然而在这幅清晰的光学望远镜影像里,外观不规则的LDN 988及其伙伴天体,形如遮在天鹅座富星场前方的舞动线条形结构。在无光害地区裸眼即可辨认的此区域,是银河盘面上称为北煤袋星云的大片暗星云之一部分。

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LDN 988 and Friends 

Image Credit & Copyright: Rafael Rodríguez Morales

Explanation: Stars are forming in dark, dusty molecular cloud LDN 988. Seen near picture center some 2,000 light-years distant, LDN 988 and other nearby dark nebulae were cataloged by Beverly T. Lynds in 1962 using Palomar Observatory Sky Survey plates. Narrowband and near-infrared explorations of the dark nebula reveal energetic shocks and outflows light-years across associated with dozens of newborn stars. But in this sharp optical telescopic view, the irregular outlines of LDN 988 and friends look like dancing stick figures eclipsing the rich starfields of the constellation Cygnus. From dark sites the region can be identified by eye alone. It's part of the Great Rift of dark clouds along the plane of the Milky Way galaxy known as the Northern Coalsack.




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