矩尺座R是位于矩尺座η附近的一颗米拉变星[10]。 这是一颗中等质量的红巨星,通过氢融合产生部分能量。因为这种核聚变被认为是在对流的条件下发生的,所以它产生了过量的[11]。这颗恒星的星等范围从6.5等到12.8等,周期相对较长,为496天[4]。距离太阳系大约2,900光年[7],亮度是太阳的7,764倍,表面温度为3,161 K[8]

矩尺座R

依据美国变星观测者协会(AAVSO)的数据描绘的矩尺座R在可见波段光变曲线[1]
观测资料
历元 J2000
星座 矩尺座
星官
赤经 15h 35m 57.35429s[2]
赤纬 -49° 30′ 28.6817″[2]
视星等(V) 7.69[3] (6.5–12.8)[4]
特性
光谱分类M3-7[5]
U−B 色指数+1.33[3]
B−V 色指数+1.77[3]
变星类型米拉[5]
天体测定
径向速度 (Rv)−22.0[6] km/s
自行 (μ) 赤经:−0.63[2] mas/yr
赤纬:−7.09[2] mas/yr
视差 (π)1.72 ± 2.79[2] mas
距离2,900 ly(900 pc[7] ly
详细资料
亮度7,764[8] L
温度3,161[8] K
其他命名
R Nor, CD−49°9787, GC 20939, GSC 08304-00824, HD 138743, HIP 76377, HIC 76377, SAO 225948.[9]
参考数据库
SIMBAD资料

参考资料

  1. ^ Download Data. aavso.org. AAVSO. [1 October 2021]. (原始内容存档于2023-03-15). 
  2. ^ 2.0 2.1 2.2 2.3 2.4 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 页面存档备份,存于互联网档案馆
  3. ^ 3.0 3.1 3.2 Landolt, A. U. UBV observations of long-period variable stars, VIII. Publications of the Astronomical Society of the Pacific. October 1973, 85: 625. Bibcode:1973PASP...85..625L. doi:10.1086/129515 . 
  4. ^ 4.0 4.1 Watson, Christopher. R Normae. AAVSO Website. American Association of Variable Star Observers. 12 March 2014 [21 March 2015]. (原始内容存档于2024-02-18). 
  5. ^ 5.0 5.1 Uttenthaler, S.; van Stiphout, K.; Voet, K.; van Winckel, H.; et al. The evolutionary state of Miras with changing pulsation periods. Astronomy & Astrophysics. 2011, 531: A88. Bibcode:2011A&A...531A..88U. S2CID 56226953. arXiv:1105.2198 . doi:10.1051/0004-6361/201116463. 
  6. ^ Turon, C.; et al. Version 2 of the HIPPARCOS Input Catalogue. Bulletin Inf. Cent. Donnees Astron. Strasbourg. July 1993, 43: 5. Bibcode:1993BICDS..43....5T. 
  7. ^ 7.0 7.1 Whitelock, Patricia; Marang, Freddy; Feast, Michael. Infrared colours for Mira-like long-period variables found in the (M-dot <~ 10−7 M yr−1) Hipparcos Catalogue. Monthly Notices of the Royal Astronomical Society. December 2000, 319 (3): 728–758. Bibcode:2000MNRAS.319..728W. doi:10.1046/j.1365-8711.2000.03743.x . 
  8. ^ 8.0 8.1 8.2 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. Fundamental Parameters and Infrared Excesses of Hipparcos Stars. Monthly Notices of the Royal Astronomical Society. 2012, 427 (1): 343–57. Bibcode:2012MNRAS.427..343M. S2CID 118665352. arXiv:1208.2037 . doi:10.1111/j.1365-2966.2012.21873.x. 
  9. ^ V* R Normae -- Variable Star of Mira Ceti type. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. [21 March 2015]. (原始内容存档于2018-09-09). 
  10. ^ Arnold, H.J.P; Doherty, Paul; Moore, Patrick. The Photographic Atlas of the Stars. Boca Raton, Florida: CRC Press. 1999: 176. ISBN 978-0-7503-0654-6. 
  11. ^ Uttenthaler, S.; et al. Lithium destruction and production observed in red giant stars. Memorie della Societa Astronomica Italiana Supplement. 2012, 22: 56. Bibcode:2012MSAIS..22...56U. arXiv:1206.2759 .