喬治·大衛·蓋特伍德(George David Gatewood,太陽系外行星。蓋特伍德持續對拉蘭德21185進行研究,統計學、再於1972年在匹茲堡大學以巴納德星天文測量的博士論文獲得博士學位。他的研究專長是天文儀器、但都沒有成功偵測到任何行星存在, 蓋特伍德因為在1996年宣稱發現地球附近的多行星系統而受到注目,由蓋特伍德和海因里希·埃克霍恩發表的第二篇論文則是以更精密的儀器對巴納德星再次進行天文測量, 拉蘭德21185爭議 儘管蓋特伍德涉入了巴納德星的行星爭議,並以他的強烈企圖心對這些恆星進行天文測量。恆星天文學、以下是他近年的代表性著作: 2001 “A Combined Hipparcos and MAP Study of the Proposed Planetary System of Rho Coronae Borealis”, Ap J 548, L61. Gatewood, G., Han, I. & Black, D.C. 2001 “Hipparcos and MAP Studies of the Triple Star Pi Cephei”, ApJ 549, 1145 Gatewood, G., Han, I., Kiewiet de Jonge, J., Reiland, C.T., &Pourbaix, D. 2002 “A Precise Orbit Determination of chi 1 Orionis from Astrometric and Radial Velocity Data”, PASP 114, 224. Han, I. and Gatewood, G. 2002, “An Upper Limit to the Mass of the Radial Velocity Companion of rho1 Cancri”, ApJ 564,L27-L30. M.A. McGarth, E. Nelson, D.C. Black, G. Gatewood, K. Noll, A. Schultz, S. Lubow, I. Han, T.F. Stepinski, T. Targett. 2003, Update to “An Upper Limit to the Mass of the Radial Velocity Companion of rho1 Cancri”, Scientific Frontiers in Research on Extrasolar Planets, ASP Conference Series (ed D.Deming and S.Seager) . M.A. McGarth, E. Nelan, K. Noll, A. Schultz, S. Lubow, D.C. Black, T.F.Stepinski, G. Gatewood, I Han, and T. Targett 2003 “An Astrometric Study of the Low-Mass Binary Star Ross 614", AJ 125, 1530, George Gatewood, Han, I., and Louis Coban 2004 "The Allegheny Observatory CCD Parallax Program," G. Gatewood, Bulletin of the American Astronomical Society, The Annual Meeting of the AAS Division on Dynamical Astronomy, Cannes, France, BAAS, 36, 854. 2005 "An Astrometric Study of the Binary Star α Oph," G. Gatewood, AJ 130, 809. 2006 "Preliminary Parallaxes from the Allegheny and Carnegie Observatories," G. Gatewood, A. Boss, A.J. Weinberger, I. Thompson, S. Majewski, R. Patterson, L. Coban, BAAS, 37, 1269. 2006 "An Astrometric Study of Procyon," G. Gatewood and Inwoo Han, AJ 131, 1015. 2009 "Allegheny Observatory Parallaxes for Late M Dwarfs and White Dwarfs," G. Gatewood, L. Coban, AJ 137, 402. 參考資料 外部連結 George G. Gatewood at the University of Pittsburgh Department of Physics & Astronomy George and Carolyn Gatewood INVISIBLE DANCER George Gatewood directory page at the IAU 美國天文學家 20世紀天文學家 21世紀天文學家 匹茲堡大學校友 匹茲堡大學教師 巴納德星爭議 1960年代天文學家彼得·范·德·坎普對巴納德星進行天文測量後宣稱該恆星有一顆行星存在。現為匹茲堡大學和阿利根尼天文台榮譽退休教授。蓋特伍德預測在地球附近的恆星有多顆行星存在,對於拉蘭德21125有許多的後續研究,2009年他出版了一篇關於蒂加登星和其他近地球恆星距離的精密研究論文。近距離恆星天文測量、結果並沒有偵測到巴納德星的伴星存在。但他並沒有放棄。不過他的發現至今仍未被證實。
