HD 283750

HD 283750，也稱為金牛座V833，是一顆距離太陽57光年的K-型主序星。這顆恆星比太陽年輕得多，只有10億歲。HD 283750的重元素濃度與太陽相似。 這顆恆星有一個共同移動的白矮星伴星WD 0443+270，投影角距離為124"，兩者都可能是被從畢宿星團彈出的恆星。白矮星伴侶有一個相當奇特的鐵核，屬於光譜類DA9，質量為 0.62+0.02 −M☉。 雖然HD 283750被歸類為多週期變星， 2020年的一篇論文聲稱其變異性不超過太陽的變異性，並且無法確定任何週期。 HD 283750被大量的星斑覆蓋，在磁迴圈的最大值處佔據了恆星表面的28%。在1993年11月，這顆恆星爆發了一個能量為7.47×1034ergs的極其强大的耀斑，這是在焰星可能釋放能量的上限之上。HD 283750的耀斑伴隨著足够强的粒子束，足以影響恆星光球的偏振特性。 1996年，通過差分都卜勒光譜法探測到一顆疑似50-MJ的棕矮星HD 283750b，它位於1.79天環繞HD 283750的軌道上。到2007年，伴星的質量被精確到0.19M☉，成為一顆紅矮星。 Strassmeier, K. G.; Bartus, J.; Cutispoto, G.; Rodono, M. Starspot photometry with robotic telescopes: Continuous UBV and V(RI)_C photometry of 23 stars in 1991-1996. Astron. Astrophys. Suppl. Ser. October 1997, 125 (1): 11–63 [29 June 2022]. Bibcode:1997A&AS..125...11S. doi:10.1051/aas:1997369 . （原始内容存档于2023-03-26）.  Oláh, K.; Kolláth, Z.; Strassmeier, K. G. Multiperiodic light variations of active stars. Astronomy and Astrophysics. April 2000, 356: 643–653 [29 June 2022]. Bibcode:2000A&A...356..643O.  MAST: Barbara A. Mikulski Archive for Space Telescopes. Space Telescope Science Institute. [8 December 2021]. （原始内容存档于2023-03-27）.  HD 283750. SIMBAD. 斯特拉斯堡天文資料中心.  V833 Tauri. International Variable Star Index. AAVSO. [2022-06-29].  Naftilan, S. A.; Fairchild, K. Abundance Analysis of the BY Draconis Variable, Hot Flare Star V833 Tauri. Publications of the Astronomical Society of the Pacific. 1993, 105: 565. S2CID 121761886. doi:10.1086/133194.  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. Catalán, S.; Ribas, I.; Isern, J.; García-Berro, E., WD0433+270: An old Hyades stream member or an Fe-core white dwarf?, Astronomy & Astrophysics, 2007, 477 (3): 901–906, S2CID 1559222, arXiv:0710.3999 , doi:10.1051/0004-6361:20078230  Scholz, R.-D.; Meusinger, H.; Jahreiß, H., New nearby white dwarfs from Gaia DR1 TGAS and UCAC5/URAT, Astronomy & Astrophysics, 2018, 613: A26, Bibcode:2018A&A...613A..26S, S2CID 59423840, arXiv:1711.10778 , doi:10.1051/0004-6361/201731753  Toonen, S.; Hollands, M.; Gänsicke, B. T.; Boekholt, T., The binarity of the local white dwarf population, Astronomy & Astrophysics, 2017, 602: A16, Bibcode:2017A&A...602A..16T, S2CID 12367523, arXiv:1703.06893 , doi:10.1051/0004-6361/201629978  Oláh, K.; Strassmeier, K. G.; Kővári, Zs.; Guinan, E. F. Time-series photometric spot modeling. IV. The multi-periodic K5Ve binary V833 Tauri. Astronomy & Astrophysics. 2001, 372: 119–129. Bibcode:2001A&A...372..119O. doi:10.1051/0004-6361:20010362 .  Frick, P.; Sokoloff, D.; Katsova, M. M.; Bondar', N. I.; Stepanov, R. Wavelet analysis of the long-term activity of V833 Tau. Monthly Notices of the Royal Astronomical Society. 2020, 495 (4): 3788–3794. arXiv:2005.11136 . doi:10.1093/mnras/staa1458.  Bondar', N. I. Photometric period and rotational brightness modulation of V833 Tau. Astronomy Reports. 2017, 61 (2): 130–137. Bibcode:2017ARep...61..130B. S2CID 126233507. doi:10.1134/S1063772917010024.  Saar, S. H.; Martens, P. C. H.; Huovelin, J.; Linnaluoto, S. Possible detection of a stellar flare-generated particle beam in polarized light. Astronomy and Astrophysics. 1994, 286: 194. Bibcode:1994A&A...286..194S.  Bonavita, M.; Desidera, S.; Thalmann, C.; Janson, M.; Vigan, A.; Chauvin, G.; Lannier, J. SPOTS: The Search for Planets Orbiting Two Stars II. First constraints on the frequency of sub-stellar companions on wide circumbinary orbits. Astronomy and Astrophysics. 2016, 593: 593. Bibcode:2016A&A...593A..38B. S2CID 55950739. arXiv:1605.03962 . doi:10.1051/0004-6361/201628231.  天文學主題 恆星主題 航天主題 太空主題 太陽系主題