NGC 1939

NGC 1939
NGC天體
發現者詹姆士·丹露帕
發現日期1826年9月24日
座標
曆元J2000.0
赤經5時21分26.7秒
赤緯-69°56'59"
其他資料
星座山案座
星體類型星系
星等12.9

NGC 1939山案座的一個球狀星團,1826年由蘇格蘭天文學家詹姆士·敦洛普[1]用9寸孔徑反射式望遠鏡發現,後來列於初版天體新總表NGC)。因為视星等不高(+12.9),需要望遠鏡觀測。

此星系的金屬含量低。與NGC 1928類似,其水平分支的恆星絕大多數呈藍色,且位處不穩定帶[2]

參考文獻

  1. ^ Courtney Seligman. Celestial Atlas NGC Objects: NGC 1900 - 194. [2022-02-05]. (原始内容存档于2018-09-26). 
  2. ^ Mackey, A. D.; Gilmore, G. F. Photometry of Magellanic Cloud clusters with the Advanced Camera for Surveys - I. The old Large Magellanic Cloud clusters NGC 1928, 1939 and Reticulum. Monthly Notices of the Royal Astronomical Society: 153–167. 2004 [2022-02-05]. doi:10.1111/j.1365-2966.2004.07908.x. (原始内容存档于2022-02-05). NGC 1939 is a metal-poor cluster … possess HBs consisting almost exclusively of stars to the blue of the instability strip  参数|journal=与模板{{cite web}}不匹配(建议改用{{cite journal}}|website=) (帮助); |volume=被忽略 (帮助)

维基共享资源上的相關多媒體資源:NGC 1939

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