Sh2-88
星云 | |
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萊蒙山天文中心的舒爾曼望遠鏡拍攝的Sh2-88星雲 Credit: Adam Block | |
觀測資料: 曆元 J2000 epoch | |
子分類 | 反射/發射[2] |
赤经 | 19h 45m 59s[1] |
赤纬 | 25° 20' 00"[1] |
距離 | 6,523 光年 (2400[3] 秒差距) |
視尺度(V) | 47 光年 |
星座 | 狐狸座 |
物理性質 | |
半径 | 345 ly |
絕對星等 (V) | -- |
名稱 | LBN 139,上帝之臉 |
沙普利斯2-88或Sh 2-88是一個區域,包括彌漫星雲Sh 2-88A和兩個緊湊的結Sh 1-88B1和Sh 2-88B2,所有這些都與狐狸座OB1有關。
Sh 2-88A是被O8型星BD +25°3952激發的HII型彌漫星雲[4],Sh 2-88中的中性氣體和電離氣體的質量都在150到410太陽質量之間,塵埃質量約為2到9太陽質量。該結構與由BD +25°3952和藍色O8.5II(f)恆星BD +25°3866的恆星風形成的HI星際氣泡相互作用。 總的來說,它的實際結構位於2,400秒差距之外,半徑為23 × 15秒差距。 它的動力學年齡為150萬年,質量為1,300太陽質量。它的均方根電子密度為9 cm−3。所有獨立的恆星形成區域的直徑都是1弧分[5]。
附近的天體
沙普利斯2-88是這個星雲中第一個形成恆星形成區的部分。它的恆星形成首先始於這個巨大的彌漫星雲,然後擴散到星雲中的其它恆星形成區域。它擴展到緊湊型的沙普利斯2-88B1,然後擴展到超緊湊型的沙普利斯2-88B2。
沙普利斯2-88B1是一個被O8.5-9.5 V恆星電離的電離氫區(HII區域),並且是緊湊的。它還與附近的一個包含數顆大質量恆星的星團有關。
沙普利斯2-88B2是一個HII區域,被一顆比B0.5 V更暗的恆星電離,並且是超緊湊的[6]。
參考資料
- ^ 1.0 1.1 Rojas, Sebastián García. Diffuse nebula Sh 2-88 - Diffuse Nebula in Vulpecula Constellation. Telescopius. [2024-02-25]. (原始内容存档于2019-09-06).
- ^ Ionized Hydrogen Region Photographs | Descriptions | Sh 2-87, Sh 2-88, Vulpecula. [2016-05-26]. (原始内容存档于2016-06-30).
- ^ Sh 2-88. galaxymap.org. [2024-02-25]. (原始内容存档于2024-02-25).
- ^ Cappa, C.; Pineault, S.; Arnal, E. M.; Cichowolski, S. An H I interstellar bubble linked to the O-type stars BD +24or 3866 and BD +25or 3952 (PDF). Astronomy and Astrophysics. 2002, 395: 955 [2024-02-25]. Bibcode:2002A&A...395..955C. S2CID 122708299. doi:10.1051/0004-6361:20021304 . (原始内容存档 (PDF)于2024-02-26).
- ^ Sh2-88 HaRGB. bill snyder astrophotography. [2024-02-25]. (原始内容存档于2024-02-25).
- ^ Sh 2-88. galaxymap.org. [2017-04-03]. (原始内容存档于2024-02-25).
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