厕三
| 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 | 1.23±0.05[7] M☉ |
| 半径 | 1.33±0.04[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 | 5.91±0.66[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（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112.02 mas，估计其与太阳的距离为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95″，可以用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]
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，厕三被纳入美国国家航空暨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
参考资料
- ^ 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）
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