唧筒座U
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 | |
参考数据库 | |
SIMBAD | 资料 |
唧筒座U(U Antliae,U Ant)又名CD-38 6579,HD 91793、SAO 201533、HR 4153,是唧筒座的一颗恒星[1]。
概要
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
- ^ 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).
- ^ VizieR Detailed Page. [2012-07-13]. (原始内容存档于2016-03-05).
- ^ 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)
- ^ 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).
- ^ Yamashita, Y. The C-classification of spectra of carbon stars. II. Tokyo. 1975, 15: 47. Bibcode:1975AnTok..15...47Y.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 10.0 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.
- ^ 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.