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WISEPA J173835.53+273258.9

WISEPA J173835.53+273258.9
觀測資料
曆元 MJD 55451.22[1]
星座 武仙座
星官
赤經 17h 38m 35.54s[1]
赤緯 27° 32′ 58.78″[1]
視星等(V) 19.47 ± 0.08 (filter J)[2]
特性
光谱分类Y0[1]
天体测定
自行 (μ) 赤经:~ 602[1] mas/yr
赤纬:~ -969[1] mas/yr
詳細資料
質量20 (20—30) 木星质量[2] M
半徑0.93 (0.86—0.94) 木星半径[2] R
表面重力 (log g)4.75 (4.75—5.0)[2]
溫度350 (350—400)[2] K
其他命名
WISEPA J173835.53+273258.9[1], WISEP J1738+2732[2], WISE J1738+2732[1]

WISE 1738+2732,全称为WISEPA J173835.53+273258.9,是广域红外线巡天探测卫星(WISE)于2011年在武仙座发现的一颗Y0型棕矮星[1]。它和WISE 0410+1502WISE 1405+5534WISE 1541-2250WISE 1828+2650以及WISE 2056+1459一起被公布,这六颗恒星是人类发现的第一批的Y型棕矮星。

利用光度测量出WISE 1405+5534的距离为10.5秒差距(34.2光年[1],而利用光谱分光测量的距离为3.4 +3.9/-0秒差距(11.1 +12.7/-0光年)[2]。它的表面温度大约为 350(350—400)K[2]。 由于恒星发现距今时间较短,暂时无法利用三角视差测量它的准确距离。

参考文献

[编辑]
  1. ^ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 Kirkpatrick, J. Davy; Cushing, Michael C.; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Mainzer, Amanda K.; Eisenhardt, Peter R. The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE). The Astrophysical Journal Supplement Series. 2011-12-01, 197 (2): 19 [2020-09-07]. ISSN 0067-0049. doi:10.1088/0067-0049/197/2/19. (原始内容存档于2021-03-26). 
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Cushing, Michael C.; Kirkpatrick, J. Davy; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Mainzer, Amanda K.; Marsh, Kenneth A.; Beichman, Charles A.; Burgasser, Adam J. The Discovery of Y Dwarfs Using Data from the Wide-field Infrared Survey Explorer (WISE). The Astrophysical Journal. 2011-12-10, 743 (1): 50 [2020-09-07]. ISSN 0004-637X. doi:10.1088/0004-637X/743/1/50. (原始内容存档于2022-03-27). 


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WISEPA J173835.53+273258.9
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