水位增九
水位增九或巨蟹座1(英语:1 Cancri,缩写1 Cnc)是巨蟹座中的一颗恒星,[2]位于双子座边界附近,距太阳约467光年。它是一颗暗淡的橙色恒星,肉眼几乎看不见,视星等为5.97。该物体正以+14公里/秒的日心径向速度远离地球。
这是一颗演化的巨星,恒星分类为K3−III,[3]其核心的氢已耗尽并膨胀。它被指定为该类型的光谱标准。[3]通过掩月测得的恒星角直径为2.1±0.6 mas,[9]按照其估计距离,其物理半径相当于太阳半径的19倍左右。它的扩大光球层的有效温度为4,231 K,辐射出的光度是太阳光度的199倍。
参考资料
- ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Vallenari, A.; et al. Gaia Data Release 3. Summary of the content and survey properties. Astronomy & Astrophysics. 2022. arXiv:2208.00211
. doi:10.1051/0004-6361/202243940 . Gaia DR3 record for this source at VizieR.
- ^ 2.0 2.1 Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, S2CID 14878976, arXiv:0806.2878
, doi:10.1111/j.1365-2966.2008.13596.x.
- ^ 3.0 3.1 3.2 Keenan, Philip C.; McNeil, Raymond C., The Perkins catalog of revised MK types for the cooler stars, Astrophysical Journal Supplement Series, 1989, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
- ^ 4.0 4.1 Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, S2CID 119257644, arXiv:1108.4971
, doi:10.1134/S1063773712050015.
- ^ Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; de Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H., Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18, Astronomy & Astrophysics, August 2019, 628: A94, Bibcode:2019A&A...628A..94A, ISSN 0004-6361, arXiv:1904.11302
, doi:10.1051/0004-6361/201935765 .
- ^ Stassun, Keivan G.; et al, The TESS Input Catalog and Candidate Target List, The Astronomical Journal, September 2018, 156 (3): 102, Bibcode:2018AJ....156..102S, ISSN 0004-6256, arXiv:1706.00495
, doi:10.3847/1538-3881/aad050 .
- ^ 7.0 7.1 7.2 Sprague, Dani; et al, APOGEE Net: An Expanded Spectral Model of Both Low-mass and High-mass Stars, The Astronomical Journal, 8 March 2022, 163 (4): 152, Bibcode:2022AJ....163..152S, ISSN 0004-6256, arXiv:2201.03661
, doi:10.3847/1538-3881/ac4de7 , eISSN 1538-3881.
- ^ [ 1 Cnc]. SIMBAD. 斯特拉斯堡天文資料中心.
- ^ Richichi, A.; et al, CHARM2: An updated Catalog of High Angular Resolution Measurements, Astronomy and Astrophysics, February 2005, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039
|
|