格利澤1

**GJ 1**
觀測資料; 曆元 J2000
星座	玉夫座
星官
赤經	00h 05m 24.4279s
赤緯	−37° 21′ 26.503″
視星等（V）	8.57
特性
光谱分类	M1.5V
U−B 色指数	+1.04
B−V 色指数	+1.46
变星类型	天龍座BY型
天体测定
徑向速度 (Rv)	+23.6 ± 2 km/s
自行 (μ)	赤经：5633.95 mas/yr ; 赤纬：-2336.69 mas/yr
视差 (π)	229.32 ± 1.08 mas
距离	14.22 ± 0.07 ly ; (4.36 ± 0.02 pc)
绝对星等 (MV)	10.35
詳細資料
質量	0.45–0.48 M☉
半徑	0.46–0.48 R☉
溫度	3,380 K
自轉速度 (v sin i)	4.8 km/s
年齡	(0.1 ± 0.1) × 106 年
其他命名
	GJ 1, Giclas 267-025, CD -37°15492, CPD−37°9435, GC 49, GCTP 5817.00, HD 225213, HIP 439, LHS 1, LTT 23, NLTT 134, NSV 15017, SAO 192348.
參考資料庫
SIMBAD	资料

格利澤1（Gliese-Jahreiss 1或GJ 1）是在南半球玉夫座內的一顆紅矮星。它是最靠近太陽的恆星之一，距離大約是14.2光年。但是它的視星等只有8.5等，因為太暗必須借助於望遠鏡才能看見^[2]

性質

根據同的資料來源，這顆恆星的分類在M1.5V到M4.0V之間^[13]。估計格利澤1的質量是太陽的45–48%^[7]^[8]，半徑是太陽的46–48%^[9]。

這顆恆星被確認是天龍座BY型變星，變星標示為NSV 15017^[4]，它也被確認為焰星^[14]。像其它的焰星一樣，它輻射出X射線^[15]。

使用散斑干涉儀觀察這顆恆星的近紅外線光譜，被解釋為有一顆伴星在軌道上環繞著。但是，在距離主星1天文單位的距離內沒有發現比10.5等亮的天體，在10天文單位以內沒有比12.5等亮的天體^[16]。徑向速度的測量也未能查出存在軌道上環繞著的伴星。這些觀測排除了在適居帶內有數個地球質量的行星，在1天文單位或更近的軌道距離內也沒有木星質量的行星。精確度達到20m/s的徑向速度的測量顯示很小，甚至沒有變化^[17]。

這顆恆星的空間速度分量分別是：U = +77.2，V = -99.5，和W = -35.6 km/s.^[18]。它以離心率0.45的軌道環繞銀河系，與銀河核心的距離變化從3,510到9,150秒差距。相比之下，太陽目前與銀河核心的距離是8,500秒差距^[19]。具有高本動速度的恆星被稱為速逃星。這顆恆星的本動速度達到111.38公里/秒，並且這顆星的速度向量可與杜鵑-時鐘和/或劍魚座AB 星協相聯結^[12]。

由於它的赤經位置非常接近曆元1950.0分點的原點，因此在格利澤近星星表和魯坦星表都是第一顆恆星^[20]^[21]。

參考資料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 Perryman, M. A. C.; et al. The HIPPARCOS Catalogue. Astronomy & Astrophysics. April 1997, 323: L49–L52. Bibcode:1997A&A...323L..49P.
^ ^2.0 ^2.1 ^2.2 ^2.3 NSV 15017 -- Flare Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2006-06-12]. （原始内容存档于2019-06-05）.
^ ^3.0 ^3.1 Cousins, A. W. J. UBV Photometry of Some Southern Stars（Third List）. Monthly Notes Astronomical Society of South Africa. 1973, 32 (2): 43–48.
^ ^4.0 ^4.1 General Catalogue of Variable Stars NSV 15017. Centre de Données astronomiques de Strasbourg. [2009-12-14]. （原始内容存档于2018-10-03）.
^ Wilson, R. E. General Catalogue of Stellar Radial Velocities. Carnegie Institute of Washington D.C. 1953. Bibcode:1953GCRV..C......0W.
^ Schmitt JHMM, Liefke C. NEXXUS: A comprehensive ROSAT survey of coronal X-ray emission among nearby solar-like stars. Astron Astrophys. April 2004, 417: 651–65.
^ ^7.0 ^7.1 Zechmeister, M.; Kürster, M.; Endl, M. The M dwarf planet search programme at the ESO VLT + UVES. A search for terrestrial planets in the habitable zone of M dwarfs. arXiv. August 6, 2009. arXiv:0908.0944. 缺少或|url=为空 (帮助);
^ ^8.0 ^8.1 The One Hundred Nearest Star Systems. RECONS. Georgia State University. 2009-01-01 [2009-09-08]. （原始内容存档于2012-05-14）.
^ ^9.0 ^9.1 Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. Catalogue of Apparent Diameters and Absolute Radii of Stars（CADARS）-Third edition - Comments and statistics. Astronomy and Astrophysics. February 2001, 367: 521–524. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. Note: Search the VizieR catalogue II/224 （页面存档备份，存于互联网档案馆） for HD 225213.
^ Gautier, Thomas N., III; et al. Far-Infrared Properties of M Dwarfs. The Astrophysical Journal. September 2007, 667 (1): 527–536. Bibcode:2007ApJ...667..527G. doi:10.1086/520667.
^ Schröder, C.; Reiners, A.; Schmitt, J. H. M. M. Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo. Astronomy and Astrophysics. January 2009, 493 (3): 1099–1107. Bibcode:2009A&A...493.1099S. doi:10.1051/0004-6361:200810377.
^ ^12.0 ^12.1 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun. Monthly Notices of the Royal Astronomical Society. January 2011, 410 (1): 190–200. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.
^ M1.5: SIMBAD. M3: Gautier, Thomas N., III; et al (2007). M3: Schmitt, J. H. M. M.; et al (2004). M4: Eggen, Olin J. (1996) M4: Pasinetti-Fracassini, L. E.; et al (2001).
^ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition. Astronomy and Astrophysics Supplement. November 1999, 139: 555–558. Bibcode:1999A&AS..139..555G. doi:10.1051/aas:1999407.
^ Schmitt JHMM, Fleming TA, Giampapa MS. The X-ray view of the low-mass stars in the solar neighborhood. Ap J. September 1995, 450 (9): 392–400. Bibcode:1995ApJ...450..392S. doi:10.1086/176149.
^ Leinert, C.; Henry, T.; Glindemann, A.; McCarthy, D. W., Jr. A search for companions to nearby southern M dwarfs with near-infrared speckle interferometry. Astronomy and Astrophysics. September 1997, 325: 159–166. Bibcode:1997A&A...325..159L.
^ Zechmeister, M.; Kürster, M.; Endl, M. The M dwarf planet search programme at the ESO VLT + UVES. A search for terrestrial planets in the habitable zone of M dwarfs. Astronomy and Astrophysics. October 2009, 505 (2): 859–871. Bibcode:2009A&A...505..859Z. arXiv:0908.0944 . doi:10.1051/0004-6361/200912479.
^ Eggen, Olin J. Distribution and Corrlation of Age, Abundance, and Motion of Lower Main Sequence Stars. Astronomical Journal. January 1996, 111: 466–475. Bibcode:1996AJ....111..466E. doi:10.1086/117797.
^ Allen, Christine; Santillan, Alfredo. An improved model of the galactic mass distribution for orbit computations. Revista Mexicana de Astronomia y Astrofisica. October 1991, 22: 255–263. Bibcode:1991RMxAA..22..255A.
^ Gliese, W. Catalogue of Nearby Stars. Veröffentlichungen des Astronomischen Rechen-Instituts Heidelberg. 1969. Bibcode:1969VeARI..22....1G.
^ Luyten, W. J. LHS (Luyten half-second) Catalogue.. Minneapolis, Minnesota: University of Minnesota. 1976 [2009-09-09]. （原始内容存档于2019-06-10）.

[hipparcos-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 Perryman, M. A. C.; et al. The HIPPARCOS Catalogue. Astronomy & Astrophysics. April 1997, 323: L49–L52. Bibcode:1997A&A...323L..49P.

[SIMBAD-2] 2.0 ^2.1 ^2.2 ^2.3 NSV 15017 -- Flare Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2006-06-12]. （原始内容存档于2019-06-05）.

[MNRAS32-3] 3.0 ^3.1 Cousins, A. W. J. UBV Photometry of Some Southern Stars（Third List）. Monthly Notes Astronomical Society of South Africa. 1973, 32 (2): 43–48.

[GCVS-4] 4.0 ^4.1 General Catalogue of Variable Stars NSV 15017. Centre de Données astronomiques de Strasbourg. [2009-12-14]. （原始内容存档于2018-10-03）.

[5] Wilson, R. E. General Catalogue of Stellar Radial Velocities. Carnegie Institute of Washington D.C. 1953. Bibcode:1953GCRV..C......0W.

[Liefke-6] Schmitt JHMM, Liefke C. NEXXUS: A comprehensive ROSAT survey of coronal X-ray emission among nearby solar-like stars. Astron Astrophys. April 2004, 417: 651–65.

[arXiv.0908.0944-7] 7.0 ^7.1 Zechmeister, M.; Kürster, M.; Endl, M. The M dwarf planet search programme at the ESO VLT + UVES. A search for terrestrial planets in the habitable zone of M dwarfs. arXiv. August 6, 2009. arXiv:0908.0944. 缺少或|url=为空 (帮助);

[RECONS-8] 8.0 ^8.1 The One Hundred Nearest Star Systems. RECONS. Georgia State University. 2009-01-01 [2009-09-08]. （原始内容存档于2012-05-14）.

[aaa367-9] 9.0 ^9.1 Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. Catalogue of Apparent Diameters and Absolute Radii of Stars（CADARS）-Third edition - Comments and statistics. Astronomy and Astrophysics. February 2001, 367: 521–524. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. Note: Search the VizieR catalogue II/224 （页面存档备份，存于互联网档案馆） for HD 225213.

[10] Gautier, Thomas N., III; et al. Far-Infrared Properties of M Dwarfs. The Astrophysical Journal. September 2007, 667 (1): 527–536. Bibcode:2007ApJ...667..527G. doi:10.1086/520667.

[aaa493_3_1099-11] Schröder, C.; Reiners, A.; Schmitt, J. H. M. M. Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo. Astronomy and Astrophysics. January 2009, 493 (3): 1099–1107. Bibcode:2009A&A...493.1099S. doi:10.1051/0004-6361:200810377.

[mnras410_1_190-12] 12.0 ^12.1 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun. Monthly Notices of the Royal Astronomical Society. January 2011, 410 (1): 190–200. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.

[13] M1.5: SIMBAD. M3: Gautier, Thomas N., III; et al (2007). M3: Schmitt, J. H. M. M.; et al (2004). M4: Eggen, Olin J. (1996) M4: Pasinetti-Fracassini, L. E.; et al (2001).

[14] Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition. Astronomy and Astrophysics Supplement. November 1999, 139: 555–558. Bibcode:1999A&AS..139..555G. doi:10.1051/aas:1999407.

[Schmitt-15] Schmitt JHMM, Fleming TA, Giampapa MS. The X-ray view of the low-mass stars in the solar neighborhood. Ap J. September 1995, 450 (9): 392–400. Bibcode:1995ApJ...450..392S. doi:10.1086/176149.

[16] Leinert, C.; Henry, T.; Glindemann, A.; McCarthy, D. W., Jr. A search for companions to nearby southern M dwarfs with near-infrared speckle interferometry. Astronomy and Astrophysics. September 1997, 325: 159–166. Bibcode:1997A&A...325..159L.

[aaa505_2_859-17] Zechmeister, M.; Kürster, M.; Endl, M. The M dwarf planet search programme at the ESO VLT + UVES. A search for terrestrial planets in the habitable zone of M dwarfs. Astronomy and Astrophysics. October 2009, 505 (2): 859–871. Bibcode:2009A&A...505..859Z. arXiv:0908.0944 . doi:10.1051/0004-6361/200912479.

[18] Eggen, Olin J. Distribution and Corrlation of Age, Abundance, and Motion of Lower Main Sequence Stars. Astronomical Journal. January 1996, 111: 466–475. Bibcode:1996AJ....111..466E. doi:10.1086/117797.

[19] Allen, Christine; Santillan, Alfredo. An improved model of the galactic mass distribution for orbit computations. Revista Mexicana de Astronomia y Astrofisica. October 1991, 22: 255–263. Bibcode:1991RMxAA..22..255A.

[20] Gliese, W. Catalogue of Nearby Stars. Veröffentlichungen des Astronomischen Rechen-Instituts Heidelberg. 1969. Bibcode:1969VeARI..22....1G.

[21] Luyten, W. J. LHS (Luyten half-second) Catalogue.. Minneapolis, Minnesota: University of Minnesota. 1976 [2009-09-09]. （原始内容存档于2019-06-10）.

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格利澤1

性質

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參考資料

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