積尸增一也稱為巨蟹座39是在星座巨蟹座的一顆恆星,位於距離太陽614光年的鬼宿星團(NGC 2632、M44、或蜂巢星團)。其視星等為6.39,用肉眼看它是一個挑戰[2]。這個物體正以34公里/秒的徑向速度遠離地球[2]。
這是一顆演化中的巨星,其恆星分類為G8+ III-IIIb[3],表明它已經耗盡了核心的氫氣。估計它的年齡是4億6000萬年[2],質量是太陽的2.88倍[2],和半徑大約是太陽半徑的12倍[4]。這顆恆星以4,954K[2]的有效溫度從光球層輻射出太陽光度105倍的光度[2]。
參考資料
- ^ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A.; Vallenari, A.; Prusti, T.; de Bruijne, J. H. J.; et al. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy & Astrophysics. 2018. Bibcode:2018A&A...616A...1G. arXiv:1804.09365 . doi:10.1051/0004-6361/201833051. VizieR中此天体在盖亚望远镜第二批数据发布的记录
- ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 Luck, R. Earle, Abundances in the Local Region. I. G and K Giants, Astronomical Journal, 2015, 150 (3), 88, Bibcode:2015AJ....150...88L, S2CID 118505114, arXiv:1507.01466 , doi:10.1088/0004-6256/150/3/88.
- ^ 3.0 3.1 Keenan, Philip C.; McNeil, Raymond C., The Perkins catalog of revised MK types for the cooler stars, The Astrophysical Journal Supplement Series, 1989, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
- ^ 4.0 4.1 Pasinetti Fracassini, L. E.; et al, Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS), Astronomy and Astrophysics Third, February 2001, 367: 521–524, Bibcode:2001A&A...367..521P, S2CID 425754, arXiv:astro-ph/0012289 , doi:10.1051/0004-6361:20000451.
- ^ 5.0 5.1 Prugniel, Ph.; et al, The atmospheric parameters and spectral interpolator for the MILES stars, Astronomy & Astrophysics, July 2011, 531: A165, Bibcode:2011A&A...531A.165P, S2CID 54940439, arXiv:1104.4952 , doi:10.1051/0004-6361/201116769.
- ^ 39 Cnc. SIMBAD. 斯特拉斯堡天文資料中心.
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