唧筒座UU Antliae,U Ant)又名CD-38 6579HD 91793SAO 201533HR 4153,是唧筒座的一颗恒星[1]

唧筒座U
U Antliae
唧筒座U在天球上的位置(红圈内)
观测资料
历元 J2000
星座 唧筒座[1][2]
星官
赤经 10h 35m 12.852s[3]
赤纬 −39° 33′ 45.32″[3]
视星等(V) 5.27 - 6.04[4]
特性
光谱分类C5,3[5]
U−B 色指数7.10[6]
B−V 色指数2.84[6]
变星类型脉动型不规则变星(LB)[7]
天体测定
径向速度 (Rv)41.00[8] km/s
自行 (μ) 赤经:−31.02 ± 0.56[3] mas/yr
赤纬:3.50 ± 0.53[3] mas/yr
视差 (π)3.73 ± 0.54[3] mas
距离approx. 900 ly
(approx. 270 pc)
绝对星等 (MV)−5.22[9]
详细资料
质量1.04[来源请求] M
半径350[来源请求] R
亮度8,000[10] L
温度2,800[10] K
其他命名
HD 91793,HR 4153, HIP 51821, CD−38°6579, 2MASS J10351285-3933453, PPM 287864, AAVSO 1030–39, SAO 201533
参考数据库
SIMBAD资料


阿塔卡马大型毫米波/亚毫米波阵列(ALMA)观测唧筒座U外围尘埃壳层影像。

概要

编辑

唧筒座U是C型碳星,并且是视星等在5.27至6.04之间变化的不规则变星。唧筒座U距离地球约900光年。它的光度约为太阳的8000倍,表面温度约2800 K。唧筒座U外围被两层尘埃壳层包围,研究认为形成这两个壳层的物质分别在1.4万和1万年前喷出[11]

参考资料

编辑
  1. ^ 1.0 1.1 Pulsating variable Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2012-07-13]. (原始内容存档于2019-07-30). 
  2. ^ VizieR Detailed Page. [2012-07-13]. (原始内容存档于2016-03-05). 
  3. ^ 3.0 3.1 3.2 3.3 3.4 van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664 [2017-09-25]. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357. (原始内容存档于2019-03-28). Vizier catalog entry 页面存档备份,存于互联网档案馆
  4. ^ Otero, Sebastian. U Antliae. AAVSO Website. American Association of Variable Star Observers. 2011-11-03 [2014-07-25]. (原始内容存档于2017-11-07). 
  5. ^ Yamashita, Y. The C-classification of spectra of carbon stars. II. Tokyo. 1975, 15: 47. Bibcode:1975AnTok..15...47Y. 
  6. ^ 6.0 6.1 Ducati, J. R. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues. 2002, 2237. Bibcode:2002yCat.2237....0D. 
  7. ^ Samus, N. N.; Durlevich, O. V.; et al. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013). VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 2009, 1. Bibcode:2009yCat....102025S. 
  8. ^ Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. 2006, 32 (11): 759. Bibcode:2006AstL...32..759G. arXiv:1606.08053 . doi:10.1134/S1063773706110065. 
  9. ^ Guandalini, R.; Cristallo, S. Luminosities of carbon-rich asymptotic giant branch stars in the Milky Way. Astronomy & Astrophysics. 2013, 555: 7. Bibcode:2013A&A...555A.120G. arXiv:1305.4203 . doi:10.1051/0004-6361/201321225. A120. 
  10. ^ 10.0 10.1 Kerschbaum, F.; Ladjal, D.; Ottensamer, R.; Groenewegen, M. A. T.; Mecina, M.; Blommaert, J. A. D. L.; Baumann, B.; Decin, L.; Vandenbussche, B.; Waelkens, C.; Posch, T.; Huygen, E.; De Meester, W.; Regibo, S.; Royer, P.; Exter, K.; Jean, C. The detached dust shells of AQ Andromedae, U Antliae, and TT Cygni. Astronomy and Astrophysics. 2010, 518: L140. Bibcode:2010A&A...518L.140K. arXiv:1005.2689 . doi:10.1051/0004-6361/201014633. 
  11. ^ Izumiura, H.; Waters, L. B. F. M.; de Jong, T.; Loup, C.; Bontekoe, Tj. R.; Kester, D. J. M. A double dust shell surrounding the carbon star U Antliae. Astronomy and Astrophysics. 1997, 323: 449–60. Bibcode:1997A&A...323..449I.