敗臼增一南魚座β) 在星表上是南天星座南魚座內的一對聯星[5][6]。它的視星等為肉眼可見的4.29等[2]。依據從地球觀察得到的年周視差22.84mas[1],這顆恆星與太陽的距離是143光年。它的座標位置是X射線的發射源,亮度為88.5×1020 W,但這應該不是來自這顆A-型恆星[11],可能還有其它發射源。

敗臼增一(南魚座β)
Diagram showing star positions and boundaries of the Piscis Austrinus constellation and its surroundings
Cercle rouge 100%.svg

敗臼增一的位置(圓圈)
觀測資料
曆元 J2000.0
星座 南魚座
星官 敗臼虛宿
赤經 22h 31m 30.33038s[1]
赤緯 −32° 20′ 45.8653″[1]
視星等(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
徑向速度 (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]
詳細資料
質量2.33±0.07[8] M
半徑2.10[9] R
表面重力 (log g)4.12±0.03[8]
亮度37[8] L
溫度9,638[9] K
自轉速度 (v sin i)30[4] km/s
年齡339[8] Myr
其他命名
β PsA, 17 Piscis Austrini, CPD−32° 6506, FK5 1592, HD 213398, HIP 111188, HR 8576, SAO 213883, WDS J22315-3221A[10]
參考資料庫
SIMBADdata

Oblak(1978年)曾將其視為一顆三合星[3],但隨後就將其列為聯星[5][6]。它的星等為4.29[3],主星A,是一顆白色的A型主序星類型為 A1V[4]。估計質量是2.3太陽質量[8],半徑是2.1太陽半徑[9]有效溫度是9,638K[9],來自光球層的發光強度是太陽亮度的37倍[8]紅外過量的證據顯示它有岩屑盤,估計其軌道距離主星12AU,溫度為188K[9]。伴星B的星等為7.8,恆星分類為A2V,與主星距離30.3角秒[5][6]

敗臼增一相對於太陽以每秒14.4公里的速度在銀河系中移動。它投射的銀河軌道讓它在距離銀河中心23,900至28,300光年的軌道上運動[12][來源可靠?]

中國,它與敗臼一(天鶴座γ)、敗臼二敗臼三敗臼四英语19 Piscis Austrini組成星官敗臼[13][14]

參考資料编辑

  1. ^ 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. ^ 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. ^ 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. ^ 4.0 4.1 4.2 Royer, F.; 等, 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. ^ 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. ^ 6.0 6.1 6.2 6.3 Rodriguez, David R.; 等, 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. 
  7. ^ 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. ^ 8.0 8.1 8.2 8.3 8.4 8.5 8.6 Gerbaldi, M.; 等, 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. ^ 9.0 9.1 9.2 9.3 9.4 Patel, Rahul I.; 等, 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. 
  10. ^ bet PsA -- High proper-motion Star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2017-05-27]. 
  11. ^ 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. 
  12. ^ Beta Piscis Austrini (HIP 111188)[永久失效連結]
  13. ^ Allen, Richard Hinckley, Star Names — Their Lore and Meaning: Piscis Australis, the Southern Fish, 1963 [2017-05-27]. 
  14. ^ 敗臼是虛宿內的一個星官,意思是空的廢墟或是負責葬禮的官吏。

外部連結编辑