GJ 1151是一顆位於北天拱極星座大熊座北部的一顆拱極星,距離太陽26.2光年。它具有微紅的色調,視星等為14.0等,因為太黯淡而使得肉眼看不見[2]。這顆恆星正在以−36km/s的徑向速度接近[4],並且具有相對較大的自行,以1.815·yr−1的速率穿越天球[6]

格利澤1151(GJ 1151)

藝術家印像中的GJ 1151和GJ 1151 b。
觀測資料
曆元 J2000.0
星座 大熊座
星官
赤經 11h 50m 57.72145s[1]
赤緯 +48° 22′ 38.5625″[1]
視星等(V) 14.008[2]
特性
光谱分类dM4.5[2]
B−V 色指数1.787[3]
天体测定
徑向速度 (Rv)−36.01±0.28[4] km/s
自行 (μ) 赤经:-1545.069[1] mas/yr
赤纬:-962.724[1] mas/yr
视差 (π)124.3378 ± 0.0549[1] mas
距离26.23 ± 0.01 ly
(8.043 ± 0.004 pc)
绝对星等 (MV)14.482±0.022[2]
詳細資料
質量0.1540[3] M
半徑0.1903[3] R
溫度3,143±26[2] K
金属量 [Fe/H]+0.04[2] dex
自轉速度 (v sin i)2.0[4] km/s
年齡2.5[3] Gyr
其他命名
GJ 1151、​G 122-49、​LHS 316、​NLTT 28752、​2MASS J11505787+4822395, Gaia EDR3 786834302080370304[5]
參考資料庫
SIMBAD资料

這是一顆小的紅矮星,其光譜類型為dM4.5[2]。 它有25億年的歷史[3],並且以2.0的投影旋轉速度自轉[4]。這顆恆星的質量約為太陽的15.4%[3],半徑為太陽半徑的19.0%[3]有效溫度為3,143K[2]

行星系? 编辑

2020年,天文學家宣布發現來自恆星的無線電輻射具有大約地球大小的行星,在1-5天的軌道上公轉,並與恆星的磁場相互作用[7][8][9][10][11][12]。這樣的交互作用類似於將木星-木衛一磁場相互作用放大的版本,GJ 1151扮演木星,而其行星扮演木衛一的角色。該發現於2021年2月使用徑向速度法得到證實[13],但隨著更多數據的出現,一個月後就遭到駁斥[14]

格利澤1151的行星系[8][13]
成員
(依恆星距離)
质量 半長軸
(AU)
轨道周期
()
離心率 傾角 半径
b (未确认) ≤1.2[14] M 0.01735+0.00065
−0.00070
2.0183+0.0084
−0.0008
?

相關條目 编辑

參考資料 编辑

  1. ^ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 .  已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Houdebine, Éric R.; et al. The Mass-Activity Relationships in M and K Dwarfs. I. Stellar Parameters of Our Sample of M and K Dwarfs. The Astronomical Journal. August 2019, 158 (2): 17. Bibcode:2019AJ....158...56H. S2CID 159041104. arXiv:1905.07921 . doi:10.3847/1538-3881/ab23fe. 56. 
  3. ^ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Mann, Andrew W.; et al. How to Constrain Your M Dwarf: Measuring Effective Temperature, Bolometric Luminosity, Mass, and Radius. The Astrophysical Journal. May 2015, 804 (1): 38. Bibcode:2015ApJ...804...64M. S2CID 19269312. arXiv:1501.01635 . doi:10.1088/0004-637X/804/1/64. 64. 
  4. ^ 4.0 4.1 4.2 4.3 Jeffers, S. V.; et al. CARMENES input catalogue of M dwarfs. III. Rotation and activity from high-resolution spectroscopic observations. Astronomy & Astrophysics. June 2018, 614: 19. Bibcode:2018A&A...614A..76J. S2CID 56147445. arXiv:1802.02102 . doi:10.1051/0004-6361/201629599. A76. 
  5. ^ G 122-49. SIMBAD. 斯特拉斯堡天文資料中心. 
  6. ^ Lépine, Sébastien; Shara, Michael M. A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog). The Astronomical Journal. March 2005, 129 (3): 1483–1522. Bibcode:2005AJ....129.1483L. S2CID 2603568. arXiv:astro-ph/0412070 . doi:10.1086/427854. 
  7. ^ Vedantham, H. K.; et al. Coherent radio emission from a quiescent red dwarf indicative of star–planet interaction. Nature Astronomy. 2020-02-17, 4 (6): 577–583 [2022-09-01]. Bibcode:2020NatAs.tmp...34V. ISSN 2397-3366. S2CID 211204712. arXiv:2002.08727 . doi:10.1038/s41550-020-1011-9. hdl:1887/3133600. (原始内容存档于2023-01-20) (英语). 
  8. ^ 8.0 8.1 Pope, Benjamin J. S.; et al. No Massive Companion to the Coherent Radio-emitting M Dwarf GJ 1151. The Astrophysical Journal Letters. 17 February 2020, 890 (2): L19 [1 March 2020]. Bibcode:2020ApJ...890L..19P. S2CID 211171765. arXiv:2002.07850 . doi:10.3847/2041-8213/ab5b99. (原始内容存档于2023-02-14). 
  9. ^ Starr, Michelle. For The First Time, Astronomers Have Detected an Exoplanet Using Radio Waves. ScienceAlert.com. 29 February 2020 [1 March 2020]. (原始内容存档于2022-09-26). 
  10. ^ Radio telescope measures aurorae in distant planetary system. UPI. [2020-02-26]. (原始内容存档于2022-04-22) (英语). 
  11. ^ Redd, Nola Taylor. New Exoplanet Search Strategy Claims First Discovery. Quanta Magazine. 18 February 2020 [2020-02-26]. (原始内容存档于2023-03-27) (英语). 
  12. ^ Clark, Stuart. An exoplanet is generating radio waves from its red dwarf sun. New Scientist. [2020-02-26]. (原始内容存档于2022-12-05) (美国英语). 
  13. ^ 13.0 13.1 Mahadevan, Suvrath; Stefánsson, Gudmundur; Robertson, Paul; Terrien, Ryan C.; Ninan, Joe P.; Holcomb, Rae J.; Halverson, Samuel; Cochran, William D.; Kanodia, Shubham; Ramsey, Lawrence W.; Wolszczan, Alexander; Endl, Michael; Bender, Chad F.; Diddams, Scott A.; Fredrick, Connor; Hearty, Fred; Monson, Andrew; Metcalf, Andrew J.; Roy, Arpita; Schwab, Christian, The Habitable-zone Planet Finder Detects a Terrestrial-mass Planet Candidate Closely Orbiting Gliese 1151: The Likely Source of Coherent Low-frequency Radio Emission from an Inactive Star, The Astrophysical Journal Letters, 2021, 919 (1): L9, Bibcode:2021ApJ...919L...9M, S2CID 231802021, arXiv:2102.02233 , doi:10.3847/2041-8213/abe2b2 
  14. ^ 14.0 14.1 Perger, M.; Ribas, I.; Anglada-Escudé, G.; Morales, J. C.; Amado, P. J.; Caballero, J. A.; Quirrenbach, A.; Reiners, A.; Béjar, V. J. S.; Dreizler, S.; Galadí-Enríquez, D.; Hatzes, A. P.; Henning, Th.; Jeffers, S. V.; Kaminski, A.; Kürster, M.; Lafarga, M.; Montes, D.; Pallé, E.; Rodríguez-López, C.; Schweitzer, A.; Zapatero Osorio, M. R.; Zechmeister, M., The CARMENES search for exoplanets around M dwarfs, Astronomy & Astrophysics, 2021, 649: L12, S2CID 126038821, arXiv:2103.10216 , doi:10.1051/0004-6361/202140786