格利泽318
格利泽318是一颗位于罗盘座的白矮星。光谱分类为DA5.5,视星等为11.85[2],距离地球27.7光年[5]。这颗恒星太暗了。[4]它的质量约为太阳的45%,但光度仅为太阳的0.15%[4]。
观测资料 历元 J2000 | |
---|---|
星座 | 罗盘座 |
星官 | |
赤经 | 08h 41m 32.50s[1] |
赤纬 | –32° 56′ 34.0″[1] |
视星等(V) | 11.85[2] |
特性 | |
光谱分类 | DA5.5 |
U−B 色指数 | −0.59[1] |
B−V 色指数 | +0.25[3] |
天体测定 | |
径向速度 (Rv) | +29.3 ± 2.9 km/s |
自行 (μ) | 赤经:–1100 ± 9 mas/yr 赤纬:1340 ± 8 mas/yr |
视差 (π) | 113.63 ± 1.97[4] mas |
距离 | 28.7 ± 0.5 ly (8.8 ± 0.2 pc) |
绝对星等 (MV) | 12.14 ± 0.05[4] |
详细资料 | |
质量 | 0.45 ± 0.01[4] M☉ |
亮度 | 0.0015[4] L☉ |
温度 | 9120 ± 190[4] K |
年龄 | 550 ± 20 million[4] 年 |
其他命名 | |
参考数据库 | |
SIMBAD | 资料 |
ARICNS | 资料 |
参考资料
- ^ 1.0 1.1 1.2 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). CDS/ADC Collection of Electronic Catalogues. 2003, 2246: II/246 [2023-04-12]. Bibcode:2003yCat.2246....0C. (原始内容存档于2022-09-20).
- ^ 2.0 2.1 Pancino, E.; Altavilla, G.; Marinoni, S.; Cocozza, G.; Carrasco, J. M.; Bellazzini, M.; Bragaglia, A.; Federici, L.; Rossetti, E.; Cacciari, C.; Balaguer Núñez, L.; Castro, A.; Figueras, F.; Fusi Pecci, F.; Galleti, S.; Gebran, M.; Jordi, C.; Lardo, C.; Masana, E.; Monguió, M.; Montegriffo, P.; Ragaini, S.; Schuster, W.; Trager, S.; Vilardell, F.; Voss, H. The Gaia spectrophotometric standard stars survey - I. Preliminary results. Monthly Notices of the Royal Astronomical Society. 2012, 426 (3): 1767–81. Bibcode:2012MNRAS.426.1767P. S2CID 27564967. arXiv:1207.6042 . doi:10.1111/j.1365-2966.2012.21766.x.
- ^ Mermilliod, J.-C. Compilation of Eggen's UBV data, transformed to UBV (unpublished). Catalogue of Eggen's UBV Data. 1986 [2023-04-12]. Bibcode:1986EgUBV........0M. (原始内容存档于2019-12-08).
- ^ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Subasavage, John P.; Jao, Wei-Chun; Henry, Todd J.; Bergeron, P.; Dufour, P.; Ianna, Philip A.; Costa, Edgardo; Méndez, René A. The Solar Neighborhood. XXI. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the 25 Parsec White Dwarf Sample. The Astronomical Journal. 2009, 137 (6): 4547–60. Bibcode:2009AJ....137.4547S. S2CID 14696597. arXiv:0902.0627 . doi:10.1088/0004-6256/137/6/4547.
- ^ Sion, Edward M. 1.The White Dwarfs Within 20 Parsecs of the Sun: Kinematics and Statistics. The Astronomical Journal. 2009, 138 (6): 1681. Bibcode:2009AJ....138.1681S. S2CID 119284418. arXiv:0910.1288 . doi:10.1088/0004-6256/138/6/1681.
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