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19 April 2024
 
  » arxiv » 1206.2477

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Discovery of New Faint Northern Galactic Planetary Nebulae
Agnes Acker ; Henri M. J. Boffin ; Nicolas Outters ; Brent Miszalski ; Laurence Sabin ; Pascal Le Du ; Filipe Alves ;
Date 12 Jun 2012
AbstractWe present the discovery of 6 nebular objects made by amateur astronomers. Four of these discoveries are clearly planetary nebulae (PNe), one is a possible PN, and another is a likely H II region. The bipolar nebula Ou4 presents the largest angular extent ever found : over one degree on the sky! We consider various scenarios that could explain such a nebula. Ou4 could be one of the nearest PNe known, though its possible PN nature will need confirmation.
Source arXiv, 1206.2477
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