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敗臼增一
鎖定
敗臼增一，即南魚座β（β Piscis Austrini），在星表上是南天星座南魚座內的一對聯星
[1-2]
。它的視星等為肉眼可見的4.29等
[3]
。依據從地球觀察得到的年周視差22.84mas
[4]
，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
[5]
，可能還有其它發射源。
- 中文名
- 敗臼增一
- 外文名
- Beta Piscis Austrini
Oblak（1978年）曾將其視為一顆三合星
[6]
，但隨後就將其列為聯星
[1]
[2]
。它的星等為4.29
[6]
，主星A，是一顆白色的A型主序星，類型為 A1V
[7]
。估計質量是2.3太陽質量
[8]
，半徑是2.1太陽半徑
[9]
。有效温度是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，温度為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
[1]
[2]
。
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。
- 參考資料
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- 1. 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.
- 2. 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.
- 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.
- 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.
- 5. 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.
- 6. 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.
- 7. 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.
- 8. 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. 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. Allen, Richard Hinckley, Star Names — Their Lore and Meaning: Piscis Australis, the Southern Fish, 1963 [2017-05-27].
- 11. 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。
- 收起
