打开主菜单

MACS J1149 Lensed Star 1

MACS J1149 Lensed Star 1是目前人类观测到的最遥远的恒星,距离地球约90亿光年(红移为z=1.49),属蓝超巨星[2][3][4][5][6][7]来自该星的光源于大爆炸后的44亿年。[6]

MACS J1149 Lensed Star 1
NASA-Icarus-MostDistantMainSequenceStar-20180402.jpg
MACS J1149 Lensed Star 1的发现
觀測資料
曆元 J2000[1]
星座 狮子座[1][2]
星官
赤經 约11h 49m 35.45s[1]
赤緯 约22° 23′ 44.84″[1]
視星等(V)
特性
光谱分类B[2]
视星等 (V)≈28.4[2]
视星等 (R)≈28.2[2]
视星等 (Z)≈27.9[2]
视星等 (J)27.3[2]
视星等 (H)27.4[2]
詳細資料
質量初始質量 ≳33[2] M
溫度11,000 - 14,000[2] K
其他命名
參考資料庫
SIMBAD J1149 Lensed Star 1 data

科学家在研究雷夫斯达尔超新星的过程中发现了这颗恒星。该星经星系团MACS J1149+2223的引力透镜效应被放大至2000倍,从而使其能被哈勃空间望远镜捕捉到。[2][3][4][5][6] 据发现者之一的帕特里克·凯利(Patrick Kelly)所述,这是人类利用引力透镜效应首次观测到单颗星体,比之前人类所观测到的最远的非超新星恒星还远100倍。[3][6]

参见编辑

参考文献编辑

  1. ^ 1.0 1.1 1.2 1.3 Kelly, P. L.; 等. Multiple images of a highly magnified supernova formed by an early-type cluster galaxy lens. Science. 2015, 347 (6226): 1123–1126. Bibcode:2015Sci...347.1123K. PMID 25745167. arXiv:1411.6009. doi:10.1126/science.aaa3350. 
  2. ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 Kelly, Patrick L.; 等. Extreme magnification of an individual star at redshift 1.5 by a galaxy-cluster lens. Nature. 2 April 2018, 2: 334–342 [2 April 2018]. doi:10.1038/s41550-018-0430-3. 
  3. ^ 3.0 3.1 3.2 Jenkins, Ann; Villard, Ray; Kelly, Patrick. Hubble Uncovers the Farthest Star Ever Seen. NASA. 2 April 2018 [2 April 2018]. 
  4. ^ 4.0 4.1 Howell, Elizabeth. Rare Cosmic Alignment Reveals Most Distant Star Ever Seen. Space.com. 2 April 2018 [2 April 2018]. 
  5. ^ 5.0 5.1 Sanders, Robert. Hubble peers through cosmic lens to capture most distant star ever seen. Berkeley News. 2 April 2018 [2 April 2018]. 
  6. ^ 6.0 6.1 6.2 6.3 Parks, Jake. Hubble spots farthest star ever seen. Astronomy. 2 April 2018 [2 April 2018]. 
  7. ^ Dunham, Will. Most distant star ever detected sits halfway across the universe. Reuters. 2 April 2018 [3 April 2018].