NGC 1931
星云 | |
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反射星雲 | |
觀測資料: J2000.0 epoch | |
赤经 | 5h 31m[1] |
赤纬 | +34° 15′[1] |
距離 | ~7000 光年 |
视星等 (V) | 10.1[1] |
視尺度(V) | 3′ |
星座 | 御夫座 |
NGC 1931是威廉·赫歇爾於1793年2月4日在御夫座發現的一個星雲,因為與獵戶座大星雲有許多相同的特性,所以被稱為「縮小版的獵戶座大星雲」。它是發射和反射混合的星雲,並且在發射星雲的中心有著像獵戶四邊形,由年輕的炙熱恆星形成的梯形星團。整個星雲和星團的複雜群體大小只有約3弧分[2]。與地球的距離估計是7,000光年[3]。 這個星雲也登錄在沙普利星表中,稱為Sh 2-237.
參考資料
- ^ 1.0 1.1 1.2 SIMBAD Astronomical Database. Results for NGC 1931. [2008-11-16]. (原始内容存档于2019-05-01).
- ^ NGC 1931 @ SEDS NGC objects pages. [2017-01-15]. (原始内容存档于2008-05-01).
- ^ A.K. Pandey; H.S. Mahra. Photometry of Open Cluster NGC 1931. Astrophysics and Space Science. 1986, 120 (1): 107–113. Bibcode:1986Ap&SS.120..107P. doi:10.1007/BF00653902.
外部連結
维基共享资源上的相关多媒体资源:NGC 1931
- NGC 1931 @ Wikisky(页面存档备份,存于互联网档案馆)
- NGC 1931 @ SEDS NGC objects pages
- Sharpless 237(页面存档备份,存于互联网档案馆)
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天文學目錄 | ||
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NGC天體表: | NGC 1929 - NGC 1930 - NGC 1931 - NGC 1932 - NGC 1933 |