M31-RV


M31-RV

M31-RV的光變曲線，改編自Boschi和Munari（2004）[1]。
紅點顯示紅色波段星等，藍點顯示藍色波段星等。
觀測資料
曆元 J2000.0
星座 [仙女座星系
星官
赤經 00h 43m 02.433s[2]
赤緯 41° 12′ 56.17″[2]
視星等（V）
特性
演化阶段M超巨星[1]
光谱分类M0I-M7I[1]
变星类型亮紅新星
其他命名
M31 V1006、M31 V1007、McD 88 1
參考資料庫
SIMBAD资料

M31-RV位於仙女座星系（M31），可能是一顆紅激變變星。1988年經歷了一次爆發，與麒麟座V838在2002年經歷的爆發相似。這樣的天體被稱為亮紅新星或中等亮度的紅色瞬變。在爆發期間，麒麟座V838和M31-RV都達到了-9.8的最大絕對視星等[1]。

2006年，使用哈伯太空望遠鏡觀測到M31-RV周圍的區域，但只看到紅巨星。人們認為這顆恆星要麼變得太暗，哈伯望遠鏡看不見，要麼這顆恒星是其中一顆紅巨星的伴星，要麼這顆星本身就是紅巨星[2]。

M31-RV達到17的峰值視星等，然後迅速消退並顯示出塵埃形成。最有可能的解釋是，這些爆發發生在恆星合併事件期間[3]。

相關條目

參考資料

  1. ^ 1.0 1.1 1.2 1.3 Boschi, F.; Munari, U. M 31-RV evolution and its alleged multi-outburst pattern. Astronomy and Astrophysics. 2004, 418 (3): 869–875. Bibcode:2004A&A...418..869B. S2CID 18582562. arXiv:astro-ph/0402313 可免费查阅. doi:10.1051/0004-6361:20035716. 
  2. ^ 2.0 2.1 2.2 Bond, Howard E. Hubble Space Telescope Imaging of the Outburst Site of M31 RV. II. No Blue Remnant in Quiescence. The Astrophysical Journal. 2011, 737 (1): 17. Bibcode:2011ApJ...737...17B. S2CID 118561097. arXiv:1105.4595 可免费查阅. doi:10.1088/0004-637X/737/1/17. 
  3. ^ Kochanek, C. S.; Adams, Scott M.; Belczynski, Krzysztof. Stellar mergers are common. Monthly Notices of the Royal Astronomical Society. 2014, 443 (2): 1319. Bibcode:2014MNRAS.443.1319K. S2CID 118617376. arXiv:1405.1042 可免费查阅. doi:10.1093/mnras/stu1226. 


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