2017年09月30日:星云NGC 281-(Portrait of NGC 281)

2017年09月30日:星云NGC 281-(Portrait of NGC 281)

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2017-09-30 / 0 评论 / 0 阅读 / 正在检测是否收录...

2017年09月30日:星云NGC 281-(Portrait of NGC 281)
2017年09月30日:星云NGC 281-(Portrait of NGC 281)--原图下载


Image Credit &Copyright: Eric Coles andMel Helm
说明: 透视星云NGC 281之时,你可能会漏看疏散星团IC 1590的成员星。然而,诞生于此星云内的这群大质量年轻亮星,却是激发星云发出辉光的终极能源。这幅星云NGC 281影像里的吸睛结构,是被星团炽热恒星的强烈高能恒星风和辐射,所雕塑和侵蚀出的云气柱和緻密尘埃云球之剪影。如果这些尘埃结构存在够久,它们有可能成为未来恒星诞生之所。NGC 281位在仙后座内,离我们大约1万光年远,因其外观,也常被戏称为小精灵星云。这幅清晰的组合影像,是由数张窄波段照片组合而成,其中,星云的氢、硫、氧原子辐射,分别以绿、红和蓝色加以呈现。以星云NGC 281的距离来估算,这幅影像涵盖了超过80光年的区域。

原文:

Image Credit &Copyright: Eric Coles andMel Helm
Explanation: Look through the cosmic cloud cataloged as NGC 281and you might miss the stars of open clusterIC 1590.Still, formedwithinthe nebula that cluster's young, massive starsultimately power the pervasivenebular glow.The eye-catching shapes looming inthisportrait of NGC 281 are sculpted columns and densedust globulesseen in silhouette, eroded by intense, energetic winds and radiationfrom the hot cluster stars.If they survive long enough,the dusty structures could also be sites of future star formation.Playfully calledthe Pacman Nebula because of its overall shape,NGC 281 is about 10,000 light-years away in the constellationCassiopeia.This sharp composite image was made throughnarrow-band filters,combining emission from the nebula's hydrogen, sulfur, and oxygenatoms in green, red, and blue hues.It spans over 80 light-years at the estimated distance of NGC 281.

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