女宿一
女宿一(宝瓶座ε;Albali;HD 198001)是位于宝瓶座的恒星,其视星等为3.77。
观测资料 历元 J2000 | |
---|---|
星座 | 宝瓶座 |
星官 | |
赤经 | 20h 47m 40.55260s[1] |
赤纬 | −09° 29′ 44.7877″[1] |
视星等(V) | 3.77[2] |
特性 | |
光谱分类 | A1 V[2] |
U−B 色指数 | +0.029[3] |
B−V 色指数 | –0.001[3] |
变星类型 | Suspected[4] |
天体测定 | |
径向速度 (Rv) | –16[5] km/s |
自行 (μ) | 赤经:+33.98[1] mas/yr 赤纬:-34.77[1] mas/yr |
视差 (π) | 15.70 ± 0.21[1] mas |
距离 | 208 ± 3 ly (63.7 ± 0.9 pc) |
绝对星等 (MV) | −0.46[6] |
详细资料 | |
表面重力 (log g) | 3.64[7] |
温度 | 9,470[7] K |
金属量 [Fe/H] | +0.07[7] dex |
自转速度 (v sin i) | 70[2] km/s |
年龄 | 240[8] Myr |
其他命名 | |
参考资料库 | |
SIMBAD | 资料 |
参考文献
编辑- ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 Levato, O. H., Rotational Velocities and Spectral Types of Some A-Type Stars, Publications of the Astronomical Society of the Pacific, August 1972, 84 (500): 584, Bibcode:1972PASP...84..584L, doi:10.1086/129336.
- ^ 3.0 3.1 Cousins, A. W. J., Standardization of Broadband Photometry of Equatorial Standards, South African Astronomical Observatory Circulars, 1984, 8: 59, Bibcode:1984SAAOC...8...59C.
- ^ 4.0 4.1 * eps Aqr. SIMBAD. 斯特拉斯堡天文资料中心. [2012-06-29].
- ^ Wielen, R.; et al, Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, 1999, Bibcode:1999VeARI..35....1W.
- ^ Ammler-von Eiff, M.; Reiners, A., New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?, Astronomy & Astrophysics, June 2012, 542: A116, Bibcode:2012A&A...542A.116A, arXiv:1204.2459 , doi:10.1051/0004-6361/201118724.
- ^ 7.0 7.1 7.2 Hill, G. M., Compositional differences among the A-type stars. 2: Spectrum synthesis up to V sin i = 110 km/s, Astronomy and Astrophysics, February 1995, 294 (2): 536–546, Bibcode:1995A&A...294..536H.
- ^ Su, K. Y. L.; et al, Debris Disk Evolution around A Stars, The Astrophysical Journal, December 2006, 653 (1): 675–689, Bibcode:2006ApJ...653..675S, arXiv:astro-ph/0608563 , doi:10.1086/508649.