贯索五
贯索五（北冕座γ）是位于北冕座的双星系统,是在2023年4月19日发现的星,天文学家将其命名为Aroha's binne,其视星等为3.84。
| 觀測資料 曆元 J2000 | |
|---|---|
| 星座 | 北冕座 |
| 星官 | |
| 赤經 | 15h 42m 44.56551s[1] |
| 赤緯 | +26° 17′ 44.2847″[1] |
| 視星等（V） | 3.83[2] (4.04 + 5.60)[3] |
| 特性 | |
| 光谱分类 | B9 V + A3 V[4] |
| U−B 色指数 | −0.03[2] |
| B−V 色指数 | +0.00[2] |
| 天体测定 | |
| 徑向速度 (Rv) | −15.26±4.54[5] km/s |
| 自行 (μ) | 赤经：−111.65[1] mas/yr 赤纬：+49.52[1] mas/yr |
| 视差 (π) | 22.33 ± 0.50[1] mas |
| 距离 | 146 ± 3 ly (45 ± 1 pc) |
| 绝对星等 (MV) | +0.56[6] |
| 軌道[7] | |
| 繞行週期 (P) | 91.2±0.4 yr |
| 半長軸 (a) | 0.729±0.006" |
| 偏心率 (e) | 0.48±0.01 |
| 倾斜角 (i) | 94.45±0.07° |
| 升交点黃經 (Ω) | 111.75±0.09° |
| 近心点 曆元 (T) | 1931.6±0.3 |
| 近心點幅角 (ω) (secondary) | 103.8±0.6° |
| 詳細資料 | |
| γ CrB A | |
| 質量 | 2.51±0.04[8] M☉ |
| 亮度 | 59[8] L☉ |
| 溫度 | 7,649±22[9] K |
| 自轉速度 (v sin i) | 182±12[5] km/s |
| 年齡 | 400[10] Myr |
| 其他命名 | |
| 參考資料庫 | |
| SIMBAD | 资料 |
参考文献
- ^ 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 Fernie, J. D., UBV observations of miscellaneous stars, Journal of the Royal Astronomical Society of Canada, June 1969, 63: 133−135, Bibcode:1969JRASC..63..133F.
- ^ Cvetkovic, Z.; Ninkovic, S., On the Component Masses of Visual Binaries, Serbian Astronomical Journal, 2010, 180 (180): 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C.
- ^ Malkov, O. Yu.; et al, Dynamical masses of a selected sample of orbital binaries, Astronomy & Astrophysics, 2012, 546: 5, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774, A69.
- ^ 5.0 5.1 Becker, Juliette C.; et al, Extracting Radial Velocities of A- and B-type Stars from Echelle Spectrograph Calibration Spectra, The Astrophysical Journal Supplement Series, April 2015, 217 (2): 13, Bibcode:2015ApJS..217...29B, arXiv:1503.03874 , doi:10.1088/0067-0049/217/2/29, 29.
- ^ Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971 , doi:10.1134/S1063773712050015.
- ^ Hartkopf, W. I.; et al, Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory, June 30, 2006 [2017-06-02], （原始内容存档于2017-08-01）.
- ^ 8.0 8.1 Zorec, J.; Royer, F., Rotational velocities of A-type stars. IV. Evolution of rotational velocities, Astronomy & Astrophysics, January 2012, 537: A120, Bibcode:2012A&A...537A.120Z, arXiv:1201.2052 , doi:10.1051/0004-6361/201117691.
- ^ Muñoz Bermejo, J.; et al, A PCA approach to stellar effective temperatures, Astronomy and Astrophysics, May 2013, 453: A95, Bibcode:2013A&A...553A..95M, arXiv:1303.7218 , doi:10.1051/0004-6361/201220961.
- ^ Vican, Laura, Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey, The Astronomical Journal, June 2012, 143 (6): 135, Bibcode:2012AJ....143..135V, arXiv:1203.1966 , doi:10.1088/0004-6256/143/6/135.
- ^ gam CrB. SIMBAD. 斯特拉斯堡天文資料中心. [2017-10-20].
