NGC 1316:星系互击后
[align=center][color=red][b]影响提供&[color=red] [/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/lib/about_apod.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhglUnxgKv89Sn_NzjTaQMRE7zC5Pw#srapply][color=red]版权[/color][/url][color=red] [/color][color=red]:[/color][/b][color=red] [/color][/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.martinpughastrophotography.id.au/&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhvn0whTv8yK0Z-olIvOYbftA-ylA][color=red]Martin Pugh[/color][/url] [/align][align=center][color=blue](2008年9月2日)[/color] [/align]
[img]http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0809/ngc1316_pugh_big.jpg[/img]
[url=http://antwrp.gsfc.nasa.gov/apod/ap080902.html][color=darkred]http://antwrp.gsfc.nasa.gov/apod/ap080902.html[/color][/url]
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[color=green][b]说明：[/b]天文学家正试着去了解造成[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://hubblesite.org/newscenter/archive/releases/1999/06&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhib_qb5RLVR87SNDEB36mrsHu1nUw][color=green]NGC 1316[/color][/url][color=green]星系这种不寻常情况的原因。
[align=left]初步的研究显示[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.noao.edu/noao/noaonews/jun95/art3.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgJbKCTnhHWtwGAebiERDuxDg2LiA]NGC 1316[/url]这个巨大的[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap961106.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgEl-Rlg3mLFl6vJTNqn_4QSrl4aw]椭圆星系(elliptical galaxy)[/url] ，大约在1亿年前吞食了一个附近的[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap980525.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiRcWMMkawHoMcWANmnNPJoztmN7w]螺旋星系(spiral galaxy)[/url] 。 [/align][align=left]支持这个说法的证据是[url=http://www.martinpughastrophotography.id.au/images/NGC1316&1317.jpg]图中[/url]黑色的[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap980116.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgDY-_XEnthekHiejDOoVJnjRIqHQ]尘埃带(dust lane)[/url] ，通常在[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/messier/spir.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhirC_i-4E9wYPi6KhTsgr4uZoLerQ]螺旋[/url]星系中才会有大量的尘埃存在，以及看似旋转的恒星和气团漩涡。 [/align][align=left][url=http://www.martinpughastrophotography.id.au/images/NGC1316&1317.jpg]上图[/url]中不怎么亮的点就是[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap080806.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjPnzcwVFYNnQgOcuSR3CxWTlAwYQ]球状星团(globular star cluster)[/url] ，目前我们还不能解释这些球状星团为何这么小。 [/align][align=left]大部份的[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/messier/elli.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhqNFiG08VD49-fUX0Di17Oxn4qkg]椭圆星系[/url]都有[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://adsabs.harvard.edu/cgi-bin/nph-bib_query%3Fbibcode%3D1998MNRAS.298.1123K&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiU7q8-9gYpI8D_w_O1sBZkg3xZ8g]又多又亮的球状星团[/url] ，但[url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://adsabs.harvard.edu/cgi-bin/nph-bib_query%3Fbibcode%3D1996AJ....111.2212S&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhh2hlVRjM5h0bcsItRfH39dGWjeEg]NGC 1316[/url]中却只有一些而已。 [/color][/align][align=left][color=green]这些观测到的[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap980719.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhg5zl6pj6lLBL-bm_XUVe3A9M4txg][color=green]球状星团[/color][/url][color=green]的年龄非常老，不可能是因为最近和[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://energy.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap971022.html&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhg5KULEn6guW-E9UHVl2AebHRiH8w][color=green]螺旋星系碰撞[/color][/url][color=green]后形成的，其中的一种[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://hubblesite.org/newscenter/archive/releases/1999/06&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhib_qb5RLVR87SNDEB36mrsHu1nUw][color=green]假说[/color][/url][color=green]是这些[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://en.wikipedia.org/wiki/Globular_cluster&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhirIAG9D4WexambRmmEVewJJwXKQ][color=green]球状星团[/color][/url][color=green]是先前的螺旋星系所残存在[/color][url=http://203.208.37.104/translate_c?hl=zh-CN&sl=zh-TW&u=http://en.wikipedia.org/wiki/NGC_1316&prev=/search%3Fq%3D%25E6%2588%2590%25E5%25A4%25A7%25E5%25A4%25A9%25E6%2596%2587%25E5%25AE%259E%25E9%25AA%258C%25E5%25AE%25A4%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhg9NebMESBpBpTfEZNM8_hoX5Um6Q][color=green]NGC 1316[/color][/url][color=green]之中。[/color]::42:: ::42:: ::42:: [size=2][color=magenta](转自成大天文学教室)[/color][/size][/align]
[[i] 本帖最后由 zheng123 于 2008-9-2 14:13 编辑 [/i]] 感谢！！支持！！支持！！ 楼主辛苦了
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