近𫓧銊三
近𫓧銊三（玉夫座δ，δ Scl，δ Sculptoris）是在星座玉夫座的一颗三合星[9]，它距离地球大约137.4 光年[1]。
  | |
| 观测资料 历元 J2000 | |
|---|---|
| 星座 | 玉夫座 |
| 星官 | |
| 赤经 | 23h 48m 55.54658s[1] |
| 赤纬 | -28° 07′ 48.9745″[1] |
| 视星等（V） | 4.57[2] |
| 特性 | |
| 光谱分类 | A0Vp(Lam Boo)n[3] |
| U−B 色指数 | -0.03[2] |
| B−V 色指数 | +0.01[2] |
| 天体测定 | |
| 径向速度 (Rv) | +8.70[4] km/s |
| 自行 (μ) | 赤经：+100.80[1] mas/yr 赤纬：-105.34[1] mas/yr |
| 视差 (π) | 23.73 ± 0.22[1] mas |
| 距离 | 137 ± 1 ly (42.1 ± 0.4 pc) |
| 绝对星等 (MV) | 1.47[5] |
| 详细资料 | |
| 质量 | 2.27[6] M☉ |
| 半径 | 1.8[7] R☉ |
| 表面重力 (log g) | 4.34[8] |
| 亮度 | 29[6] L☉ |
| 温度 | 9,750[6] K |
| 自转速度 (v sin i) | 299[6] km/s |
| 其他命名 | |
| 参考资料库 | |
| SIMBAD | 资料 |
主星玉夫座δA，是一颗白色的A型主序矮星[3]，视星等 +4.59。它的伴星玉夫座δB非常黯淡，视星等11.6，与主星距离4 弧秒，或超过175 天文单位。以74弧秒的更大间隔围绕这对恒星运行的是黄色的玉夫座δC，其视星等为9.4[9][10]。
该系统是剑鱼座AB移动星群的候选成员，这是一个由年龄相似的恒星组成的星协，它们在太空中有著共同的航向[11]。
参考资料
- ^ 1.0 1.1 1.2 1.3 1.4 1.5 Van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. S2CID 18759600. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ^ 2.0 2.1 2.2 Ducati, J. R. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues. 2002, 2237. Bibcode:2002yCat.2237....0D.
- ^ 3.0 3.1 Abt, Helmut A.; Morrell, Nidia I. The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars. Astrophysical Journal Supplement. 1995, 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182 .
- ^ Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. 2006, 32 (11): 759–771. Bibcode:2006AstL...32..759G. S2CID 119231169. arXiv:1606.08053 . doi:10.1134/S1063773706110065.
- ^ Anderson, E.; Francis, Ch. XHIP: An extended hipparcos compilation. Astronomy Letters. 2012, 38 (5): 331. Bibcode:2012AstL...38..331A. S2CID 119257644. arXiv:1108.4971 . doi:10.1134/S1063773712050015. Vizier catalog entry
- ^ 6.0 6.1 6.2 6.3 Zorec, J.; Royer, F. Rotational velocities of A-type stars. Astronomy & Astrophysics. 2012, 537: A120. Bibcode:2012A&A...537A.120Z. S2CID 55586789. arXiv:1201.2052 . doi:10.1051/0004-6361/201117691. Vizier catalog entry
- ^ Allende Prieto, C.; Lambert, D. L. Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures. Astronomy and Astrophysics. 1999, 352: 555–562. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002 . Vizier catalog entry
- ^ 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. S2CID 33401607. arXiv:1501.03154 . doi:10.1088/0004-637X/804/2/146. Vizier catalog entry
- ^ 9.0 9.1 Eggleton, P. P.; Tokovinin, A. A. A catalogue of multiplicity among bright stellar systems. Monthly Notices of the Royal Astronomical Society. 2008, 389 (2): 869. Bibcode:2008MNRAS.389..869E. S2CID 14878976. arXiv:0806.2878 . doi:10.1111/j.1365-2966.2008.13596.x . Vizier catalog entry
- ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog. The Astronomical Journal. 2001, 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920 . Vizier catalog entry
- ^ McCarthy, Kyle; White, Russel J., The Sizes of the Nearest Young Stars, The Astronomical Journal, June 2012, 143 (6): 14, Bibcode:2012AJ....143..134M, S2CID 118538522, arXiv:1201.6600 , doi:10.1088/0004-6256/143/6/134, 134.
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