厕三
厕三(γ Lep)是星座天兔座中的一颗恒星,位于厕二的东南部和厕四的西南部。它足够明亮,视星等3.587等[3],可以用肉眼看到。根据从地球看到的年周视差mas,估计其与 112.02 太阳的距离为29光年。它有一颗自行的伙伴,是属于天龙座BY型变星,视星等6.28等[12]的天兔座AK。两颗星的视角分离″,可以用 95双筒望远镜很好的分辨出来[11]。 它们是大熊座移动星群的成员[7]
观测资料 历元 J2000 | |
---|---|
星座 | 天兔座 |
星官 | 厕(参宿) |
赤经 | 05h 44m 27.79089s[1] |
赤纬 | −22° 26′ 54.1808″[2] |
视星等(V) | 3.587[3] |
特性 | |
光谱分类 | F6 V[4] |
U−B 色指数 | −0.007[3] |
B−V 色指数 | +0.494[3] |
天体测定 | |
径向速度 (Rv) | −9.7[5] km/s |
自行 (μ) | 赤经:−291.67[2] mas/yr 赤纬:−368.97[2] mas/yr |
视差 (π) | 112.296 ± 0.18[2] mas |
距离 | 29.04 ± 0.05 ly (8.91 ± 0.01 pc) |
绝对星等 (MV) | 3.84[6] |
详细资料 | |
质量 | ±0.05 1.23[7] M☉ |
半径 | ±0.04 1.33[7] R☉ |
表面重力 (log g) | 4.10[8] |
亮度 (bolometric) | 2.291[9] L☉ |
温度 | 6,299[8] K |
金属量 [Fe/H] | −0.12[8] dex |
自转 | ±0.66 5.91[9] |
自转速度 (v sin i) | 15[10] km/s |
年龄 | 1.3[6] Gyr |
其他命名 | |
参考数据库 | |
SIMBAD | 资料 |
厕三是一颗恒星分类F6V的F型主序星[4]。 它比太阳大,半径太阳半径的1.2倍,质量是太阳质量的1.3倍[7]。这颗恒星大约有13亿年的历史[6],并且自转周期约为六天[9]。根据其恒星特征和与地球的距离,厕三被纳入美国太空总署的类地行星发现者任务的高优先级目标。已经检测到它有红外过量,但没有观察到任何内容[9]。
相关条目
编辑参考资料
编辑- ^ van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 2.3 Perryman, M. A. C.; et al. The Hipparcos Catalogue. Astronomy and Astrophysics. 1997, 323: L49–L52. Bibcode:1997A&A...323L..49P.
- ^ 3.0 3.1 3.2 3.3 Gutierrez-Moreno, A.; et al. A system of photometric standards. Publicaciones del Departamento de Astronomia de la Universidadde Chile. 1966, 1: 1. Bibcode:1966PDAUC...1....1G.
- ^ 4.0 4.1 Montes, D.; et al. Late-type members of young stellar kinematic groups - I. Single stars. Monthly Notices of the Royal Astronomical Society. November 2001, 328 (1): 45–63. Bibcode:2001MNRAS.328...45M. S2CID 55727428. arXiv:astro-ph/0106537 . doi:10.1046/j.1365-8711.2001.04781.x.
- ^ Evans, D. S. The Revision of the General Catalogue of Radial Velocities. Batten, Alan Henry; Heard, John Frederick (编). Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. June 20–24, 1966. Bibcode:1967IAUS...30...57E.
- ^ 6.0 6.1 6.2 Holmberg, J.; Nordström, B.; Andersen, J. The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics. Astronomy and Astrophysics Supplement Series. July 2009, 501 (3): 941–947. Bibcode:2009A&A...501..941H. S2CID 118577511. arXiv:0811.3982 . doi:10.1051/0004-6361/200811191. Note: see VizieR catalogue V/130 (页面存档备份,存于互联网档案馆).
- ^ 7.0 7.1 7.2 7.3 Ammler-von Eiff, M.; Guenther, E. W. Spectroscopic properties of cool Ursa Major group members. Astronomy & Astrophysics. October 2009, 508 (2): 677–693. Bibcode:2009A&A...508..677A. S2CID 119260429. arXiv:0910.5913 . doi:10.1051/0004-6361/200912660.
- ^ 8.0 8.1 8.2 Gratton, R. G.; Carretta, E.; Castelli, F. Abundances of light elements in metal-poor stars. I. Atmospheric parameters and a new T_eff_ scale. Astronomy and Astrophysics. October 1996, 314: 191–203. Bibcode:1996A&A...314..191G. arXiv:astro-ph/9603011 .
- ^ 9.0 9.1 9.2 9.3 Montesinos, B.; et al, Incidence of debris discs around FGK stars in the solar neighbourhood, Astronomy & Astrophysics, September 2016, 593: 31, Bibcode:2016A&A...593A..51M, S2CID 55251562, arXiv:1605.05837 , doi:10.1051/0004-6361/201628329, A51.
- ^ Bernacca, P. L.; Perinotto, M. A catalogue of stellar rotational velocities. Contributi Osservatorio Astronomico di Padova in Asiago. 1970, 239 (1). Bibcode:1970CoAsi.239....1B.
- ^ 11.0 11.1 LTT 2364 -- High proper-motion Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2011-01-16]. (原始内容存档于2020-11-05).
- ^ STERNBILD HASE (PDF), [2022-01-19], (原始内容存档 (PDF)于2021-06-02)