荷包蛋星系

NGC 7742[1]
哈伯太空望遠鏡(HST)觀測所見荷包蛋星系
来自:NASA/ESA/STScI/AURA.
观测数据
历元J2000
星座 飛馬座
赤经 23h 44m 15.7s[2]
赤纬 +10° 46′ 02″[2]
视直径(V) 1.778 × 1.698 moa[3]
视星等(V)12.35[2]
特征
类型SA(r)b,[2] 低電離星系核/HII[2]
天体测定
径向速度 1663 ± 1[2]km/s
红移 0.005547 ± 0.000003[2]
银心速度 1809 ± 6[2] km/s
距离 72.4 ± 6.2 Mly(22.20 ± 1.90 Mpc
其他编号
UGC 12760,[2] MCG +02-60-010,[2] UZC J234415.8+104601,[2] 2MASX J23441571+1046015[2]
参考星表
SIMBAD Search NGC 7742 data
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参见:星系星系列表

荷包蛋星系,又名NGC 7742,是一個位於飛馬座螺旋星系,屬於第二型西佛星系(Seyfert galaxy),距離地球大約7,500萬光年

由於在星系的光譜中,其中間核心特別光亮,形成一個類似荷包蛋的形狀,這是該星系擁有高度離子化原子的證據。

天文學家已經在荷包蛋星系發現2顆II型超新星:SN 1993R及SN 2014cy[4]

參考資料

  1. ^ Filho, Mercedes E.; Barthel, Peter D.; Ho, Luis C. The Radio Properties of Composite LINER/H II Galaxies. The Astrophysical Journal Supplement Series. 2002-10, 142 (2) [2022-11-06]. Bibcode:2002ApJS..142..223F. ISSN 0067-0049. arXiv:astro-ph/0205196可免费查阅. doi:10.1086/341786. (原始内容存档于2022-11-06) (英语). 
  2. ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 NASA/IPAC Extragalactic Database. Results for NGC 7742. [2006-08-20]. (原始内容存档于2013-06-07). 
  3. ^ Centre de Données astronomiques de Strasbourg. Results for NGC 7742. [2008-07-09]. (原始内容存档于2017-10-14). 
  4. ^ List of Supernovae. [IAU Central Bureau for Astronomical Telegrams. [13 September 2015]. (原始内容存档于2015-07-11). 

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