English
聯系我們
網站地圖
郵箱
舊版回顧



【科技日報】銀河系首次觀測到重元素組成恒星

文章來源:科技日報 陳超   發布時間:2019-05-10  【字號:     】  

  中國國家天文臺、日本國立天文臺組成的聯合研究小組,在銀河系中發現了一顆含有較多重元素的特殊恒星“J1124+4535”,顯示出銀河系在誕生和成長過程中曾與小星系合體的痕跡。

  這顆老年恒星是迄今為止首次發現的具有如此多重元素特征的恒星,而相似的恒星在圍繞銀河系附近的矮星系中多有發現。研究團隊據此認為,此次發現的恒星是在一個矮星系中誕生的,該矮星系與銀河系碰撞合體后成為銀河系一員。被銀河系合并的矮星系已完全喪失形狀,其原有恒星散落在銀河系中,但恒星的軌道運動及化學構成(元素組成)仍維持合并之前的狀態。此次觀測結果證明,像銀河系這樣的較大星系是經過多次與小星系的撞擊、合體,逐漸成長為目前這樣的星系的。

  人類居住的銀河系是螺旋狀的圓盤結構、恒星稀疏存在的“暈輪結構”。大多數恒星誕生于銀河系形成過程的初期,有些是由氣體在銀河系中集聚誕生;有些是在矮星系中誕生,之后被銀河系吸收過來。這一過程已被計算機模擬預測。

  自2014年開始,中日聯合研究小組利用中國的郭守敬望遠鏡(LAMOST,大天區面積多目標光纖光譜天文望遠鏡)甄選出金屬元素含量較少的恒星,日本昴望遠鏡利用搭載的高色散光譜儀(HDS)對選擇的恒星進行詳細觀測。截至目前,已對400多個天體進行了詳細的元素組成測定。此次,他們發現“J1124+4535”天體具有突出特征,即該恒星鎂、鐵比重較低,重于鐵的重元素相對較多。這是在銀河系首次觀測到的由極端元素組成的恒星。而與其相似的恒星在銀河系周圍的矮星系中已發現數例,明確顯示該恒星誕生于矮星系,之后被銀河系吸收。

  研究成果近期發表在《自然·天文學》網絡版。

  (原載于《科技日報》 2019-05-10 02版)




(責任編輯:侯茜)

附件:

專題推薦


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

彩82www.c9221.com www.760343.com | www.xv78.com | www.863931.com | www.bg63.com | www.9878.bid | www.17ht.com | www.653973.com | 818232.com | www.340661.com | www.216292.com | www.520282.com | www.154875.com | www.757021.com | www.913422.com | www.53jo.com | www.125910.com | www.590198.com | www.lz70.com | www.8735.me | www.560825.com | www.771197.com | 964276.com | www.cp312.com | www.1163.in | www.262098.com | 110161.com | 023593.com | www.009381.com | www.805376.com | www.94471.com | 337768.com | www.076225.com | www.767911.com | cp288.com | www.xj08.cc | www.004159.com | www.cp102.cc | www.234568.com | www.110093.com | www.567693.com | 703711.com | 豪彩VIPwww.001562.com | www.693789.com | www.ur72.com | www.5ai.com | www.8378.pw | www.31489.com | www.126409.com | 尊彩www.472717.com | www.93qm.com | www.pj76.cc | www.897102.com | www.949143.com | 471677.com | 777451.com | www.26825.com | www.177934.com | www.570905.com | www.88gv.com | www.531848.com | www.48bp.com | www.suncity122.com | www.118199.com | www.930090.com | www.35313.com | 爱上彩票www.ascp5.com | www.0189.com | www.135105.com | www.80lu.com | www.276464.com | www.728234.com | www.035604.com | www.201173.com | 791486.com | 62eq.com | www.6230.in | www.022188.com | www.250868.com | 202659.com | www.96390.com | 大赢家彩票网www.565121.com | www.439605.com | www.697159.com | www.72911.cc | www.078037.com | www.981446.com | www.390227.com | www.886934.com | www.0544.cn | www.128917.com | www.358172.com | www.82740.com | www.558264.com | www.555115.com | 742125.com | 802372.com | 566516.com | www.810676.com | 506120.com | 27775.com | www.135474.com | www.80400.com | www.00fd.com | www.045959.com | www.358548.com | www.617971.com | www.951794.com | www.04446.cc | www.065454.com | 229096.com | www.gv81.com | www.0769.space | www.160688.com | www.907869.com | www.588499.com | 7295.biz | 335854.com | www.00818.cc | www.136403.com | www.448411.com | www.669463.com | www.4271.vip | www.775590.com | zq89.cc | 福利彩票www.78700.com | 838695.com | www.569665.com | www.671409.com | www.568611.com | www.1500.cc | 739784.com | 651741.com | www.609520.com | www.165669.com | 918841.com | www.5006.me | www.235601.com | www.282215.com | www.94rg.com | www.568342.com | www.552466.com | www.377488.com | www.68gb.com | www.4551.com | www.90805.com | www.922887.com | www.242598.com | www.137397.com | www.29066.cc | www.7208.in | www.93cr.com | www.64482.com | www.100069.cc | www.005459.com | www.96717.com | www.79348.com | www.539228.com | 大赢家彩票平台www.852021.com | www.30555.cc | www.132731.com | www.432647.com | www.374649.com | www.440299.com | www.398051.com | www.502111.cc | www.854018.com | 397054.com | 4691.cc | 775156.com | www.bk58.com | www.198549.com | www.695712.com | www.63yt.com | www.093066.com | www.150986.com | www.639265.com | 818合彩www.www.8000hc.com | 易彩网www.99638j.com | www.uj67.com | www.qr62.com | www.08ay.com | www.iz87.com | www.za0.cc | 福利彩票www.99677r.com | www.17426.com | www.7816.xyz | www.9999.red | www.618179.com | 362032.com | www.227080.com | www.047722.com | www.387262.com | www.815588.com | 252623.com | www.61vj.com | www.88357.cc | www.58816.cc | www.386830.com | www.628732.com | www.785020.com | 336048.com | www.430022.cc | www.0792.cc | www.790452.com | 873975.com | www.an42.com | 8770.biz | 932229.com | www.889338.com | www.977898.com | www.507369.com | www.55pk.cc | www.564569.com | www.789709.com | www.64970.com | www.7347.vip | www.98978.cc | www.035407.com | www.029948.com | www.181495.com | www.771584.com | 070959.com | www.259916.com | www.88762.cc | 466821.com | www.033527.com | www.142309.com | www.254929.com | www.480804.com | www.791469.com | www.460810.com | 566474.com | www.410619.com | 7521.biz | 811501.com | www.vx11.cc | www.78fm.com | www.dx98.com | www.8361.xyz | www.234200.cc | www.834814.com | www.5558.in | www.150450.com | www.356576.com | www.717170.com | www.695561.com | www.803445.com | www.cp9708.com | www.11455.cc | www.358619.com | www.aw4.cc | www.nn71.com | www.13875.com | www.705027.com | www.758232.com | www.885203.com | 049055.com | www.936146.com | 899671.com | 福彩www.26878j.com | www.28196.cc | www.60039.cc | www.220216.com | 87669.com | 739048.com | www.68zu.com | www.138777.com | www.562379.com | www.828552.com | www.310973.com | www.734394.com | www.783922.com | www.41mp.com | www.11ba.com | www.851272.com | www.qh67.com | www.339983.com | www.496387.com | www.330884.com | www.412135.com | www.847006.com | 377355.com | 808538.com | www.1699.win | www.268161.cc | www.536307.com | 630425.com | www.74iu.com | www.570699.com | www.622078.com | 769612.com | www.3968.net | www.905272.com | www.862829.com | 奔驰彩票www.281877.com | www.050.bid | www.18744.com | www.421296.com | www.982376.com | www.952701.com | 586129.com | www.250344.com | www.450363.com | 大赢家彩票网www.54400f.com | www.09jp.com | www.661859.com | 576495.com | 6165.cc | www.kn99.com | www.28936.cc | www.238794.com | www.712678.com | www.689972.com | www.871069.cc | www.c49.pw | www.cy48.com | www.r85.cn | www.374.win | www.227645.com | www.607811.com | www.351489.com | www.940.cm | www.cp0202.com | www.973253.com | www.389512.com | www.871179.com | www.999696.cc | www.967114.com | www.2lp.com | www.434193.com | 中彩网www.71233m.com | 天天乐彩票www.221836.com | 852205.com | www.180062.com | www.609646.com | 750203.com | www.2312.win | www.6374.cm | www.mb2.cc | www.280799.com | www.966111.com | www.881485.com | 402660.com | 770453.com | www.3eg.cc | www.0090.win | www.397829.com | www.821099.com | www.737507.com | www.819.cn | www.055110.com | www.370928.com | ul42.com | www.11965.com | www.246999.cc | www.cp3928.com | www.lk29.com | www.28693.cc | www.111428.com | www.50449.com | www.667485.com | www.cp7715.com | 彩乐乐www.cll168.com | www.441299.com | www.780450.com | 104748.com | www.5570.biz | www.484122.com | www.731078.com | www.814717.com | www.890811.com | www.996891.com | www.441188.com | www.win007.com | www.1115.cm | www.93582.cc | www.005988.com | www.025439.com | www.518700.cc | www.607378.com | 258271.com | www.yc11.com | www.15836.cc | www.49394.com | www.493396.com | www.669185.com | www.523253.com | www.491402.com | www.104733.com | www.82129.com | www.880592.com | www.22ad.com | www.19vx.com | www.8226.cn | www.09102.com | www.157227.com | www.713167.com | www.714765.com | 018194.com | www.023443.com | www.722709.com | www.976.cm | www.254216.com | www.247918.com | www.307237.com | www.333289.com | www.540981.com | www.01369.com | www.080152.com | www.150238.com | www.456933.com | 500彩票www.50788o.com | www.45zk.com | www.21716.cc | www.121571.com | 937305.com | 704258.com | 173170.com | www.55248.cc | www.cai9777.com | www.322828.com | www.316244.com | www.415741.cc | www.266052.com | www.443679.com | 871835.com | www.dd48.com | www.121731.com | www.568220.com | www.930520.com | 855556.cc | www.1680.in | www.05246.cc | www.912375.com | 964165.com | www.248889.com | www.369293.com | 781848.com | 421274.com | www.146.biz | www.99gd.com | www.88602.com | www.122012.com | www.688480.com | www.844589.com | www.761342.com | www.327625.cc | www.538909.com | www.739422.com | www.971403.com | www.135100.com | www.765309.com | www.625967.com | www.780112.com | www.869181.com | www.905339.com | www.897027.com | www.866023.com | www.869030.com | www.960943.com | www.963294.com | www.923212.com | www.964484.com | www.914961.com | www.169852.com | www.570758.com | www.496088.com | www.035242.com | www.407010.com | www.949369.com | 220232.com | 082741.com | www.06164.com | www.bx54.com | 332492.com | www.095000.cc | www.723126.com | www.717883.com | www.552630.com | www.982455.com | 823291.com | 全民快乐8www.qmkl0.com | 529690.com | 500彩票www.3126l.com | 大玩家彩票www.84499v.com | www.97yk.com | www.579037.com | www.03oj.com | www.091258.com | www.mq23.com | www.3iv.cc | 448778.com | www.4791.net | www.888596.com | www.0160.top | www.7982.biz | 905383.com | www.17488.cc | www.574517.com | www.563062.com | www.687625.com | www.28ve.com | www.71ud.com | www.901398.com | www.967075.com | www.113521.com | www.6664.bid | www.116332.com | www.254234.com | www.859246.com | www.2898.site | www.gw54.com | www.ts23.com | www.8360.online | www.332392.com | www.125430.com | www.uy01.com | www.zg32.com | www.635.in | www.968514.com | www.926251.com | www.hk15.com | www.80da.cc | www.370557.com | www.525041.com | 974330.com | 53bv.com | www.693837.com | www.721899.com | www.592933.com | www.469694.com | www.245348.com | www.100716.com | www.9693.org | www.868.live | www.97233.com | 928489.com | www.st08.com | www.79037.com | www.763867.com | www.032916.com | www.172308.com | www.458822.com | www.675091.com | www.742306.com | 577014.com | 14332.com | www.46316.com | www.33269.cc | www.50347.cc | www.ob8.com | www.yv.com | www.pn60.com | www.336.cm | www.023996.com | www.211331.com | 073302.com | www.ci28.com | www.y99.in | www.361909.com | www.700051.cc | www.043774.com | www.245711.com | www.709758.com | www.860348.com | www.4sb.com | www.28km.com | www.2344.com | www.18ra.com | www.222423.com | www.365155.com | www.503038.com | www.369541.com | www.906677.cc | www.720036.com | www.783616.com | www.658522.com | www.766045.com | www.5698.space | www.713533.com | www.774026.com | www.765929.com | www.894099.com | www.905732.com | www.9741.xyz | 大玩家彩票www.84499l.com | www.j42.me | www.4526.biz | www.101368.com | www.678834.com | www.870608.com | www.218762.com | www.295168.com | www.492308.com | www.99270.com | www.388076.com | www.661777.com | www.667981.com | www.627068.com | 689051.com | www.156049.com | www.125797.com | www.437537.com | www.121640.com | www.320750.com | yz75.com | www.276186.com | 803914.com | www.rg33.cc | www.450.tv | www.007277.com | www.26306.cc | www.510412.com | www.359123.com | www.307553.com | www.161720.com | www.947909.com | www.983484.com | 276998.com | www.07466.com | www.87dq.com | www.035074.com | www.557757.com | www.553548.com | www.589462.com | www.i10.xyz | www.38170.com | 636594.com | j30.me | www.021731.com | www.218576.com | www.290347.com | www.238006.com | www.168478.com | 823435.com | 体彩网www.3890y.com | www.147.pw | www.29256.cc | www.401090.com | www.29999.com | www.08988.com | www.19651.cc | www.331340.com | www.4775.top | 好彩网www.hcw823.com | 500彩票www.338073.com | 35884.cc | 281011.com | 755548.com | 428369.com | www.cp1699.com | 全民彩票www.175131.com | 145321.com | www.109766.com | www.044629.com | www.162390.com | www.gd94.com | www.441.in | www.99391.cc | www.668738.com | www.667425.com | www.935900.com | www.455984.com | ql75.com | 08uf.com | 665497.com | 781824.com | www.507.com | www.039803.com | www.061070.com | www.169533.com | www.673927.com | www.688765.com | www.789757.com | www.232348.com | www.661299.com | www.959401.com | www.884284.com | 实亿国际www.sygj9.com | yl14.com | 116146.com | www.xz6.cc | www.607278.com | www.681350.com | www.658292.com | 657546.com | www.571762.com | www.941600.com | www.l43439.com | www.881631.com | 902966.com | www.uc62.com | www.80yj.com | www.25342.com | www.544009.com | www.486037.com | 122417.com | 268244.com | www.250930.com | www.363676.com | www.841155.com | www.319597.com | www.317731.com | www.045.cm | www.88rj.com | www.817234.com | www.610567.cc | www.977874.com | 13505.com | 快彩在线www.2632p.com | 彩票坊www.022am.cc | 乐8彩票www.8mcp.com | www.zs49.com | ug76.com | 彩票坊www.022yn.cc | 805299.com | www.741763.com | 309890.com | www.fw57.com | www.509898.com | www.254321.cc | www.023769.com | www.305683.com | www.42or.com | www.1939.top | www.82589.com | www.365104.cc | www.373922.com | www.730476.com | www.879794.com | www.ah47.com | 28115.com | www.50sw.com | www.34322.com | www.9969.in | www.53800.cc | www.618810.com | 幸运彩票www.73166l.com | 388505.com | ah39.com | www.vb99.com | 500彩票www.979500.com | www.as94.com | 500彩票www.50080k.com | www.596026.com | www.765454.com | 500彩票www.50051q.com | 872051.com | www.942.online | www.029127.com | 161028.com | 518744.com | www.fv2.cc | www.dc84.com | www.3642.vip | www.024989.com | www.96253.cc | www.18775.cc | www.088322.com | www.270092.com | www.195506.com | www.151014.com | www.586670.com | 亿发彩票www.370833.com | www.j86.net | www.866655.com | www.97te.com | www.200471.com | www.250850.com | www.689515.com | www.233414.com | www.759608.com | www.723821.com | www.400861.com | www.980427.com | 201924.com | 701759.com | www.21yd.com | www.xa6.com | www.og26.com | www.188611.com | www.040718.com | 302601.com | www.0837.vip | www.118594.com | www.7662.cc | 026375.com | 804526.com | 659041.com | 585496.com | www.533370.com | www.26987.com | www.9428.loan | www.8181.vip | www.97958.cc | www.89272.com | www.518830.com | 973471.com | www.234181.com | www.0790.net | www.hj7.com | www.100846.com | www.214998.com | www.166105.com | www.025401.com | www.22589.com | www.75hk.com | www.xr83.com | www.144011.com | www.756485.com | www.hb59.com | www.66759.com | www.211556.com | www.827991.com | www.651912.com | 840047.com | www.939568.com | 156079.com | www.272072.com | www.375592.com | www.626298.com | www.866893.com | www.723221.com | www.539954.com | www.278141.com | www.103735.com | www.19553.cc | www.46ku.com | 网易彩票www.26163z.com | 269089.com | www.945821.com | www.696391.com | www.439548.com | www.206505.com | www.97973.com | www.3721.com | www.lk19.com | 694464.com | 944806.com | www.905988.com | www.638972.com | www.376058.com | www.176509.com | www.82338.com | www.994.net | www.km99.com | 656449.com | www.974287.com | www.712350.com | www.450356.com | www.216068.com | www.97171.com | www.019.bid | www.jv91.com | 659845.com | 420049.com | www.790502.com | www.519240.com | www.267982.com | www.032533.com | www.5490.top | www.lx12.com | 325692.com | 905165.com | www.882983.com | www.557689.com | www.108389.com | www.03iv.com | 170138.com | www.961140.com | www.740513.com | www.514436.com | www.254712.com | www.010338.com | www.185.cm | www.xl11.cc | www.et90.com | 664938.com | www.841121.com | www.279080.com | www.4866.com | 73369.com | www.716129.com | www.419212.com | www.206563.com | www.067565.com | www.6716.biz | www.tp70.com | 54pj.cc | www.967576.com | www.717560.com | www.434777.com | www.149135.com | www.31692.cc | www.30le.com | 835683.com | 13563.com | www.803258.com | www.581352.com | www.269489.com | www.85589.cc | www.0123.in | www.cp6330.com | 870319.com | www.918027.com | www.652411.com | www.362607.com | www.137430.com | www.00633.com | www.10sf.com | 751524.com | 784591.com | www.770496.com | www.506397.com | www.234892.cc | www.93393.cc | www.0242.com | www.pv1.com | 231577.com | www.910698.com | www.595893.com | www.274758.com | www.88228.cc | www.41mo.com | 801076.com | 012865.com | www.778954.com | www.521041.com | www.210496.com | www.77584.com | www.54dz.com | 408712.com | 4524.com | www.906133.com | www.590006.com | www.255933.com | www.92058.com | www.563.tv | 博友彩www.217556.com | 971743.com | www.893363.com | www.559832.com | www.252176.com | www.73471.com | www.58ly.com | 福利彩票www.8039j.com | 874866.com | www.824828.com | www.722199.com | www.406768.com | www.117727.com | www.8486.me | www.zi16.com | 771046.com | www.980954.com | www.853575.com | www.576009.com | www.200244.com | www.27298.com | www.k88.net | 052098.com | 550987.com | www.735308.com | www.379627.com | www.115184.com | www.7858.top | www.ln34.com | www.0727.com | www.884135.com | www.608353.com | www.260097.com | www.067983.com | www.1021.vip | www.dn65.com | 129594.com | www.885913.com | www.619172.com | www.363861.com | www.064711.com | www.2819.wang | www.cai6011.com | 029625.com | www.811690.com | www.531565.com | www.232397.com | www.78578.cc | 华彩网www.www.hcw332.com | www.774345.com | www.126846.com | www.96fh.com | 凤凰彩票www.5091e.com | 49xy.com | www.770104.com | www.397868.com | www.100523.com | www.4533.vip | www.cp5728.com | 524278.com | 956841.com | www.866041.com | www.528791.com | www.203131.com | www.35109.com | www.1uh.com | 621309.com | www.960847.com | www.639884.com | www.285718.com | www.84653.com | www.087.hk | 大赢家彩票平台www.810525.com | 4577.biz | www.792805.com | www.453479.com | www.113930.com | www.7093.com | www.bs59.com | 287546.com | www.837664.com | www.445022.com | www.103522.com | www.997.hk | www.ps18.com | 396970.com | www.958491.com | www.co73.com | www.7153.com | www.678247.com | www.531509.com | www.033766.com | www.259340.cc | 彩票世家www.598799.com | 六福彩票www.66ffv.com | 乐彩网www.677038.com | www.058086.com | www.33608.com | www.2415.cc | www.7161.pw | www.ao77.com | www.ls66.com | 福彩网www.5522w.cc | www.ks29.com | www.997678.com | 043553.com | 289573.com | 吉利彩票www.80075t.com | www.186475.com | www.013533.com | www.610252.com | www.966310.com | www.089447.com | www.6lv.com | www.286308.com | www.070797.com | www.898796.com | www.770876.com | www.165302.com | www.155995.com | www.565567.com | 220827.com | www.5080.in | www.yn02.com | 853397.com | www.615597.com | www.966424.com | www.868980.com | www.529362.com | www.930598.com | www.g56.cc | www.362362.com | www.030765.com | www.52405.com | www.4869.top | www.3599.vip | www.sk82.com | 528532.com | www.994802.com | www.871105.com | www.632311.com | 658055.com | www.989094.com | www.81ji.com | www.cp1.vip | 968487.com | 632706.com | www.393301.com | www.32qp.cc | www.xl48.com | www.212605.com | www.029786.com | www.83qo.com | 凤凰彩票www.77802d.com | 662756.com | www.el47.com | 554404.com | 567604.com | www.322670.com | www.819715.com | www.456228.com | 638030.com | 幸运彩票www.739366.com | www.83aj.com | www.794302.com | 880780.com | www.638049.com | www.353211.com | 006420.com | 中彩网www.81233l.com | 240638.com | 128054.com | 948607.com | www.191770.com | www.35815.cc | www.64rx.com | www.kk10.cc | www.4165.top | www.nc62.com | www.879795.com | 769299.com | www.785212.com | www.454397.com | www.126075.com | www.78994.com | www.6980.me | www.24k88.net | 500彩票www.401285.com | www.og22.com | 67224.com | www.508495.com | www.0577.site | www.198124.com | www.57286.com | www.8917.biz | www.867058.com | www.792371.com | www.382833.com | www.885896.com | 358684.com | www.982505.com | www.754632.com | www.427751.com | www.938297.com | www.g20.live | www.55dw.cc | www.924.mobi | www.979650.com | www.99je.com | www.219407.com | www.251676.com | www.80si.com | www.78180.com | www.677878.com | www.565692.com | www.557147.com | www.550277.com | www.7030.vip | 110637.com | www.35.cn | www.hf78.com | www.eh84.com | www.155634.com | www.517828.com | www.532438.com | www.490225.com | www.792.date | www.185003.com | www.916648.com | www.b13.space | www.539.space | 696948.com | www.076981.com | www.044811.com | www.5075.cc | www.37735.com | www.922854.com | www.252078.com | www.027258.com | www.416677.com | 003089.com | 071553.com--163a.com | 940768.com | www.3553.in | www.34op.com | www.bf9.cc | www.926167.com | www.878875.com | www.665100.com | www.367189.com | www.286817.com | www.196651.com | www.277594.com | www.004862.com | www.559311.com | www.ob89.com | www.684171.com | www.34166.cc | www.hf12.com | 739794.com | www.588529.com | www.441794.com | 137430.com | www.97bm.com | www.ho06.com | www.55jh.cc | www.817671.com | www.31cj.com | 凤凰彩票www.3479u.com | www.93xa.com | www.523009.com | 801160.com | m.741881.com | www.44889.com | www.q02.org | 617618.com | www.086111.com | www.6381.org | www.ek6.com | www.681970.com | www.69gt.com | www.43283.com | 332738.com | www.988739.com | www.935216.com | www.378252.com | www.104038.com | www.022608.com | 981601.com | www.4