杵一 (危宿)

杵一 （蝎虎座1）
觀測資料
曆元 J2000.0
星座 蝎虎座
星官 杵（危宿）
赤經 22h 15m 58.17673s[1]
赤緯 +37° 44′ 55.4385″[1]
視星等（V） 4.15[2]
特性
光谱分类K3II-III[3]
U−B 色指数+1.70[2]
B−V 色指数+1.43[2]
天体测定
徑向速度 (Rv)−8.58[4] km/s
自行 (μ) 赤经：+8.85[1] mas/yr
赤纬：–0.72[1] mas/yr
视差 (π)5.25 ± 0.23[1] mas
距离620 ± 30 ly
(190 ± 8 pc)
绝对星等 (MV)−2.61+0.27
−0.24[5]
詳細資料
半徑51[6] R☉
表面重力 (log g)1.75[7]
溫度4,350[7] K
金属量 [Fe/H]−0.12[7] dex
自轉速度 (v sin i)10[8] km/s
其他命名
1 Lac, BD+37° 4526, HD 211388, HIP 109937, HR 8498, SAO 72191.[9]
參考資料庫
SIMBAD资料

杵一 （蝎虎座1）是在北天蝎虎座內一顆孤立的[10]恆星。它的視星等為裸眼可見的4.15等[2]。根據依巴谷卫星的測量，這顆恆星的距離為420光年[1]，恆星類型為K3II-III[3]，表明他以演化成巨星。估計它的直徑是太陽的51倍[6]，恆星大氣層的有效溫度是4,350K[7]，使它成為發出橙色色調的K型星 [11]。

參考資料

  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 可免费查阅, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 2.3 Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data (SIMBAD), 1986, Bibcode:1986EgUBV........0M. 
  3. ^ 3.0 3.1 Herbig, George H.; Spalding, John F., Jr., Axial Rotation and Line Broadening in Stars of Spectral Types F0-K5, Astrophysical Journal, January 1955, 121: 118, Bibcode:1955ApJ...121..118H, doi:10.1086/145969. 
  4. ^ Famaey, B.; et al, Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters, Astronomy and Astrophysics, 2005, 430: 165–186, Bibcode:2005A&A...430..165F, arXiv:astro-ph/0409579 可免费查阅, doi:10.1051/0004-6361:20041272. 
  5. ^ Carney, Bruce W.; et al, Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars, The Astronomical Journal, March 2008, 135 (3): 892–906, Bibcode:2008AJ....135..892C, arXiv:0711.4984 可免费查阅, doi:10.1088/0004-6256/135/3/892. 
  6. ^ 6.0 6.1 Pasinetti-Fracassini, L. E.; et al, Catalogue of Stellar Diameters (CADARS), Astronomy and Astrophysics, February 2001, 367 (2): 521–524, Bibcode:2001A&A...367..521P, arXiv:astro-ph/0012289 可免费查阅, doi:10.1051/0004-6361:20000451. 
  7. ^ 7.0 7.1 7.2 7.3 McWilliam, Andrew, High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances, Astrophysical Journal Supplement Series, December 1990, 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527. 
  8. ^ Bernacca, P. L.; Perinotto, M. A catalogue of stellar rotational velocities. Contributi Osservatorio Astronomico di Padova in Asiago. 1970, 239. Bibcode:1970CoAsi.239....1B. 
  9. ^ 1 Lac -- Variable Star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2016-03-07], （原始内容存档于2020-11-17）. 
  10. ^ 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, arXiv:0806.2878 可免费查阅, doi:10.1111/j.1365-2966.2008.13596.x. 
  11. ^ The Colour of Stars, Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004 [2012-01-16], （原始内容存档于March 10, 2012）.