半人马座Ω星团
[align=center][color=red][b]影像提供:[/b] [/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://trifle.gsfc.nasa.gov/UIT/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiwQz5v360CRgr7G7OYRke6SSTuFA][color=red]UIT[/color][/url][color=red] , [/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.nasa.gov/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhh2WOEFuYhIPCADm4vnlr4pwmdZuw][color=red]NASA[/color][/url] [/align][img]http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0010/omgcen_uit_big.gif[/img]
[color=green][b]说明:[/b]一个年老的红色[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/globular_clusters.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhj5iqP2fbTl_kO9cSNIiw9yQ5JJMw][color=green]球状星团(globular clusters)[/color][/url][color=green]里，真得会有炽色的蓝色恒星吗？ [align=left]从[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://trifle.gsfc.nasa.gov/UIT/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiwQz5v360CRgr7G7OYRke6SSTuFA]紫外光望远镜(Ultraviolet Imaging Telescope)[/url]所拍摄的右半幅影像中，可以看出答案是肯定的！ [/align][align=left]上面影像中的[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/messier/xtra/ngc/n5139.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhg2TdvndNqdxn5U8zzbDJ0sElSM3g]半人马座Ω星团(Omega Centauri)[/url] ，是我们银河系200多个球状[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/messier/cluster.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjaNAINMhzRMm--kI4nDZSWetdpOw]星团[/url]中最大的一个。 [/align][align=left]Ω星团拥有100多万颗恒星，在左半幅影像里就可以看到星团内的许多恒星。 [/align][align=left]如果在[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://snoopy.gsfc.nasa.gov/~orfeus2/ultraviolet.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgH04kV3TQmtSeToBnSLTwIgdZRzA]紫外光[/url]波段拍摄Ω星团，就可以看到右半幅影像所呈现的情景。 [/align][align=left]星团内有数量不少的蓝色恒星，大部份的这类恒星在演化的过程上多比[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/sun.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhuungQu5e4PKmab2PupIIndjerGQ]太阳[/url]要老。 [/align][align=left]这些恒星不再以[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://pearl1.lanl.gov/periodic/elements/1.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhippk8Z776Ve8dVAPkaO--he6UKYQ]氢[/url]为[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://fusedweb.pppl.gov/CPEP/Chart.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiKBezfZ1VO2AK1WkzQ1QWxrqc_9Q]核融合[/url]的燃料，而是正在把[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://pearl1.lanl.gov/periodic/elements/2.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhh3rIDcoX38jyBZbsJboGGAOPPa5Q]氦[/url]融合成[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://pearl1.lanl.gov/periodic/elements/6.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgKLRHDTu-pXwz-T9Zj47U2LaP1zw]碳[/url] 。 [/align][align=left]它们很快地就会抛出外层的气壳，成为一团团还在冒烟的"碳灰"，或者说它们很快就会变成为[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap000730.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjrmUwx5m8QNjZv04kBg2ojVB504Q]白矮星[/url] 。[/color] ::42:: ::42:: ::42:: [size=2][color=magenta](转自成大天文学教室)[/color][/size][/align] 果然够猛 .....不过为什么不继续核聚变直到铁呢
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