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2015-2-10 15:43|鿴:5136|:0|:С

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λںNGC 4414һ͵ϵֱ55,000꣬6,520ꡣͼƬԴ̫ԶNASAESA

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ϵӢgalaxyԴϣĦæ˦ίς (galaxias)ϵָϵȻǵ壩ɵϵͳָοǵϵһǡơǼܵĴϵͳͨ붼ڼϡϵƽڿźǣǹĻλ͵ϵֻǧ107źǵϵף1012źǵԲϵУȫת˵ĺǺϡǼ֮⣬󲿷ֵϵӴĶϵͳԼֲͬơ

ʷϣϵǵ״ģָͨӾϵ״ͨԲϵԲ״ۣϵԲ̵״бۣ״쳣ģͨܵڽϵӰĽڽϵĽãҲᵼϵĺϲɺǴIJΪνDZϵȱṹСϵᱻΪϵ

ڿԿɹ۲Уϵܳһǧڣ1011ϡ󲿷ֵϵֱ1,000100,000࣬˴˼ľǰϵռϵ֮Ŀռ䣩˼ϡĵӣƽܶСÿһԭӡϵ֯ɸļţΪϵȺţΪۼɸϵЩļͨΪƬάΧо޴ĿնΧ

ȻǶ԰ʵ˽٣ڴ󲿷ֵϵռдԼ90%۲ʾڶϵĺģʹȫҲռ˾DZΪһЩϵŻԾĺĵϵǵ̫ϵڵϵںҲһ塣

ϵСܴԲϵֱ3300굽49֮䣻ϵֱ1.6굽16֮䣻ϵֱԼ6500굽2.9֮䡣

ϵһ̫1001ױ֮䡣

ϵڲĺ˶ϵҲתϵҲڿռ˶ͳϣѧΪϵת˳ʱ뷽ʱ뷽ıͬġǸһϵķֲʽĿϵ԰Ĺ۲ʱתϵһЩ

ϵк˵Щϵڿռ߷ԽԽԶҲը۵һ֤ݡ

ϵڴ߶ȵķֲǽӽȵģС߶ܲȡϵСϵ˫ϵֺϵϵ

۲ʷ

ϵ

ϵ

ϵ

Լϵϵĵ鿪ʼղķ˹ߺ˶衤Ѷµı飺ϵѧGalactic astronomy

1610꣬٤ʹԶоĴ״Ҳǵʱ֪ӣҷӴ󵫹ȰĺǾۼɵġ1755һƪģŬ˹عɵͼƲ⣨ȷģϵӴĺת壬ǣۼһ𣬾ͬǵ̫ϵֻǹģΪӴ󡣺Ǿۼ״͸ӵЧῴһҹеĹҲijЩҹпƿǶϵ

ϵͼ

˹ѫ1845ϵͼ

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18ͽӽβʱ÷÷Ŀ¼¼103ơ֮ЭҲ¼5,000ƵĿ¼1845꣬˹ѫһµԶֳܹԲϵϵҲЩҵһЩĵ㣬Ϊȵ˵ṩ֤ݡǣδܻһͬңԶϵֱ1920ڹʹµĴԶŻȷϡطֱϵΧеĺǣұϳЩ츸ǣԹƳЩ״ľ룺ǵľʵ̫Զ²ϵһ֡1936꣬ƶڱΪУԱʹõϵ෨ һλϵ״̫λõѧЭ1785СĵļڲͬĺĿõ̫ϵĵԲϵͼ1920꿨̹õĽdzƣֻDZȽСЩֱԼ15,00ࣩ塤ʹһֲͬķ״ķֲϣõһȫͬͼһֱԼ70,000ıƽ״̫ԶĵλϡߵķûпǵǼʳɵĹߵյһ޲ءҶ˹ׯ1930꾭оɢȷ֪֮ϵͼ͸ֳˡ

ִо

1944꣬ˡն˹Ԥԭӻ21ײ΢1951㷢ǼԭӵķߡϵоΪᱻǼʳգĶλܹӳϵ˶Щ۲⵼תļٶֱϵĵİ״ṹߵԶϵԭҲܱ׷ٵ1970꣬ά³оϵɼǺ壩ʵ˵ϵתٶȡϵתѾڽδܹ۲쵽Ĵʡ

1990ʼ̫Զ˹۲Ч棬ǣȷصİʲϵеİС塣գյһмʱع⣬ṩпж1,750ڸϵĿ֤ݡڲɼĹ⼼ϵĸĽߵԶӰԼ̫ԶҲϵرǣбϵڱεIJ֣ϵѲ죬¶൱ϵ

ϵ

ϵEʾԲϵSϵSBǰϵ

ݹط෨ϵEʾԲϵSϵSBϵ

ϵҪֳࣺԲϵϵͲϵϵ͸ȷ㷺ڹеĿΪǸӾ̬ҲijЩϵҪγʣDZϵԾϵĺģ

Բϵ

ط෨ԲϵʵĹƽз࣬E0ӽԲεģE7dzݳġЩϵߵĽǶΣԲεۡǿûκεĽṹ˵ǼʵijɷҲ١ͨЩϵɢźγɵĺǣȡ֮ģԸֲͬϵģѾĺΪǵһЩС״š

󲿷ֵϵԲϵԲϵǾϵĽãײǺϲġǿԳɼϵȽϣҾ޴ԲϵϵȺDZϵϵײĽܵ¾޴Բϵγɡ

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״ϵϵһ

״ϵϵһӡ

ϵ۵״ƶߣʾǴһתɵһָģʽһҲתתĽٶȲdzζźǻᴩԽۣǸܶܶȲǽۣǻ٣ߵܶȣƲڸٹ·ϵijӻһܱΪܶȴʹڴ˴ĺǡ

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NGC 1300ǰϵһӡ

ԼϵϵʱͼΪӣһо޴ϵ̵İϵֱԼʮ꣬ԼΪǧꣻӵԼǧڿźǣ31011ʹԼǧڿ̫

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ԲϵϵǺͻģд󲿷ֵϵǰϵЩ΢Сϵϵٷ֮һĴСֻӵʮڿŵĺǡఫϵܶỷŵĴϵתǵپһİϵϵԷֳԲͲΪԲϵԲϵһƣǾΪϵȡ

Ծϵ

вֱǹ۲쵽ϵΪԾϵҲ˵ϵ˺ǡǼʽ֮⣬һҪԴĻԾϵ˵ı׼ģͣķֲΪʵλںijڶɵġ

XߵʽϵΪϵЫBL塣ɺ緢ߵƵʵĻԾϵΪ粨ϵͳһ۵ϵģУЩͬϵΪӲͬǶȹ۲õĽ

ѰĶ̬ͻ

ϵڷײ

ϵڷײ⽫պϲ

DZϵ

ϵ

߶Ƚṹ

dzϵǵڵģЩͨΪӳϵϵһϵ֮50ϵļŽϵȺİǧϵռĽϵšϵͨһ޴ԲϵͳϫݻڽϵϵСϵǾ޴ļ壬ӵϵϵȺϵźһЩµϵڳϵų߶ȣϵгɱƬ״ϸ˿ž޴Ŀնij߶УֳͬԺ;ʡ

ǵϵȺеһԱ˵һֱԼ1022СϵȺӺŮϵȺϵİϵϵϵȺŮϵΪĵľ޴ϵȺϵżһ֡

ϵг״ֲӴ߶ȿϵΧһһĿհγ֩Ľṹ֮Ϊ߶ȷֲ

ϵγɺݻ

ϵ֮γɺݻ˵硣ЩѾ㷺ܣȻвɡ

ϵγɰ棬һָۣۡϵһըγɣǰһѧ˵ָϵЕA΢γɡԭд״ţglobular clusterЩ໥ײʣ΢Щ΢ϣγϵ

Ȼڽʱգϵγɵѧвɣϵγо棬о룬չϵݻ档ѧУйϵγɺݻУ

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