败臼增一
败臼增一 （南鱼座β）在星表上是南天星座，南鱼座内的一对联星[5][6]。它的视星等为肉眼可见的4.29等[2]。依据从地球观察得到的年周视差22.84mas[1]，这颗恒星与太阳的距离是143光年。它的座标位置是X射线的发射源，亮度为88.5×1020 W，但这应该不是来自这颗A-型恒星[11]，可能还有其它发射源。
 | |
| 观测资料 历元 J2000.0 | |
|---|---|
| 星座 | 南鱼座 |
| 星官 | 败臼（虚宿） |
| 赤经 | 22h 31m 30.33038s[1] |
| 赤纬 | −32° 20′ 45.8653″[1] |
| 视星等（V） | +4.29[2] (4.29 + 6.22)[3] |
| 特性 | |
| 光谱分类 | A1 V[4] + A2 V[5][6] |
| U−B 色指数 | +0.02[2] |
| B−V 色指数 | +0.01[2] |
| 天体测定 | |
| 径向速度 (Rv) | 5.5±0.5[7] km/s |
| 自行 (μ) | 赤经：+59.12[1] mas/yr 赤纬：−18.83[1] mas/yr |
| 视差 (π) | 22.84 ± 0.21[1] mas |
| 距离 | 143 ± 1 ly (43.8 ± 0.4 pc) |
| 绝对星等 (MV) | 1.00[8] |
| 详细资料 | |
| 质量 | 2.33±0.07[8] M☉ |
| 半径 | 2.10[9] R☉ |
| 表面重力 (log g) | 4.12±0.03[8] |
| 亮度 | 37[8] L☉ |
| 温度 | 9,638[9] K |
| 自转速度 (v sin i) | 30[4] km/s |
| 年龄 | 339[8] Myr |
| 其他命名 | |
| 参考数据库 | |
| SIMBAD | 资料 |
Oblak（1978年）曾将其视为一颗三合星[3]，但随后就将其列为联星[5][6]。它的星等为4.29[3]，主星A，是一颗白色的A型主序星，类型为 A1V[4]。估计质量是2.3太阳质量[8]，半径是2.1太阳半径[9]。有效温度是9,638K[9]，来自光球层的发光强度是太阳亮度的37倍[8]。红外过量的证据显示它有岩屑盘，估计其轨道距离主星12AU，温度为188K[9]。伴星B的星等为7.8，恒星分类为A2V，与主星距离30.3角秒[5][6]。
败臼增一相对于太阳以每秒14.4公里的速度在银河系中移动。它投射的银河轨道让它在距离银河中心23,900至28,300光年的轨道上运动[12]。[来源可靠？]
参考资料
编辑- ^ 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, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 2.3 Nicolet, B., Photoelectric photometric Catalogue of homogeneous measurements in the UBV System, Astronomy and Astrophysics Supplement Series, 1978, 34: 1–49, Bibcode:1978A&AS...34....1N.
- ^ 3.0 3.1 3.2 Oblak, E., uvbybeta photometry of wide visual double stars with B, A and F spectral type - I., Astronomy and Astrophysics Supplement Series, December 1978, 34: 453–475, Bibcode:1978A&AS...34..453O.
- ^ 4.0 4.1 4.2 Royer, F.; et al, Rotational velocities of A-type stars. III. Velocity distributions, Astronomy and Astrophysics, February 2007, 463 (2): 671–682, Bibcode:2007A&A...463..671R, arXiv:astro-ph/0610785 , doi:10.1051/0004-6361:20065224.
- ^ 5.0 5.1 5.2 5.3 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.
- ^ 6.0 6.1 6.2 6.3 Rodriguez, David R.; et al, Stellar multiplicity and debris discs: an unbiased sample, Monthly Notices of the Royal Astronomical Society, May 2015, 449 (3): 3160–3170, Bibcode:2015MNRAS.449.3160R, arXiv:1503.01320 , doi:10.1093/mnras/stv483.
- ^ Gontcharov, G. A., Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system, Astronomy Letters, November 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, arXiv:1606.08053 , doi:10.1134/S1063773706110065.
- ^ 8.0 8.1 8.2 8.3 8.4 8.5 8.6 Gerbaldi, M.; et al, Search for reference A0 dwarf stars: Masses and luminosities revisited with HIPPARCOS parallaxes, Astronomy and Astrophysics Supplement, June 1999, 137 (2): 273–292, Bibcode:1999A&AS..137..273G, doi:10.1051/aas:1999248.
- ^ 9.0 9.1 9.2 9.3 9.4 Patel, Rahul I.; et al, A Sensitive Identification of Warm Debris Disks in the Solar Neighborhood through Precise Calibration of Saturated WISE Photometry, The Astrophysical Journal Supplement Series, May 2014, 212 (1): 23, Bibcode:2014ApJS..212...10P, arXiv:1403.3435 , doi:10.1088/0067-0049/212/1/10, 10.
- ^ bet PsA -- High proper-motion Star, SIMBAD Astronomical Database (斯特拉斯堡天文资料中心), [2017-05-27], （原始内容存档于2020-11-05）.
- ^ Schröder, C.; Schmitt, J. H. M. M., X-ray emission from A-type stars, Astronomy and Astrophysics, November 2007, 475 (2): 677–684, Bibcode:2007A&A...475..677S, doi:10.1051/0004-6361:20077429.
- ^ Beta Piscis Austrini (HIP 111188). [2018-09-23]. （原始内容存档于2013-04-14）.
- ^ Allen, Richard Hinckley, Star Names — Their Lore and Meaning: Piscis Australis, the Southern Fish, 1963 [2017-05-27], （原始内容存档于2023-03-10）.
- ^ 败臼是虚宿内的一个星官，意思是空的废墟或是负责葬礼的官吏。
外部链接
编辑- Kaler, James B., Beta Piscis Austrini, Stars (University of Illinois), November 12, 2009 [2018-09-23], （原始内容存档于2013-04-22）.