天园十
外观
(重定向自波江座υ4)
此條目需要擴充。 (2018年2月23日) |
觀測資料 曆元 J2000.0 | |
---|---|
星座 | 波江座 |
星官 | |
赤經 | 04h 17m 53.66241s[1] |
赤緯 | −33° 47′ 54.0569″[1] |
視星等(V) | 3.56[2] |
特性 | |
光谱分类 | B8V + B9.5V[3] |
U−B 色指数 | −0.36[2] |
B−V 色指数 | −0.12[2] |
天体测定 | |
徑向速度 (Rv) | +17.6[4] km/s |
自行 (μ) | 赤经:+62.52[1] mas/yr 赤纬:−7.24[1] mas/yr |
视差 (π) | 18.33 ± 0.15[1] mas |
距离 | 178 ± 1 ly (54.6 ± 0.4 pc) |
绝对星等 (MV) | −0.20[5] |
軌道[6] | |
繞行週期 (P) | 3250±0.0000008 d 5.010 |
半長軸 (a) | ±0.006 mas 1.902 |
偏心率 (e) | 0 |
倾斜角 (i) | ±0.1° 146.2 |
近心点 曆元 (T) | 2454407.7214 ± 0.002 JD |
半振幅 (K1) (primary) | ±0.17 62.68[7] km/s |
半振幅 (K2) (secondary) | ±0.15 64.70[7] km/s |
詳細資料 [6] | |
υ4 Eri A | |
質量 | ±0.07 3.17M☉ |
半徑 | ±0.18 2.32R☉ |
表面重力 (log g) | ±0.07 4.21 |
亮度 | ±4.3 100.6L☉ |
溫度 | ±440 12,930[8] K |
自轉速度 (v sin i) | 19[8] km/s |
年齡 | 146[8] Myr |
υ4 Eri B | |
質量 | ±0.07 3.07M☉ |
半徑 | ±0.18 2.32R☉ |
表面重力 (log g) | ±0.07 4.21 |
亮度 | ±3.3 87.4L☉ |
溫度 | 12,250 K |
其他命名 | |
參考資料庫 | |
SIMBAD | 资料 |
天园十(波江座υ4)是位于波江座的双星系统,其视星等为3.56[2]。
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, 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- ^ 2.0 2.1 2.2 2.3 Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M.
- ^ Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878
, doi:10.1111/j.1365-2966.2008.13596.x.
- ^ Evans, D. S., Batten, Alan Henry; Heard, John Frederick , 编, The Revision of the General Catalogue of Radial Velocities, 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.
- ^ Hubrig, S.; et al, Search for low-mass PMS companions around X-ray selected late B stars, Astronomy and Astrophysics, June 2001, 372: 152−164, Bibcode:2001A&A...372..152H, arXiv:astro-ph/0103201
, doi:10.1051/0004-6361:20010452.
- ^ 6.0 6.1 Hummel, Christian A.; et al, The orbit of the mercury-manganese binary 41 Eridani, Astronomy & Astrophysics, March 2017, 600 (L5): 6, Bibcode:2016SPIE.9907E..0QH, arXiv:1703.07668
, doi:10.1117/12.2231859.
- ^ 7.0 7.1 Hubrig, S.; et al, Magnetic fields of HgMn stars, Astronomy & Astrophysics, November 2012, 547: 24, Bibcode:2012A&A...547A..90H, arXiv:1208.2910
, doi:10.1051/0004-6361/201219778, A90.
- ^ 8.0 8.1 8.2 David, Trevor J.; Hillenbrand, Lynne A., The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets, The Astrophysical Journal, 2015, 804 (2): 146, Bibcode:2015ApJ...804..146D, arXiv:1501.03154
, doi:10.1088/0004-637X/804/2/146.
- ^ [ 请检查
|url=
值 (帮助). SIMBAD. 斯特拉斯堡天文資料中心. [2016-10-13]. * ups04 Eri -- Spectroscopic binary]