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arXiv · 1206.2477

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
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Abstract

We 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.

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Agnes Acker, Henri M. J. Boffin, Nicolas Outters, Brent Miszalski, Laurence Sabin, Pascal Le Du, Filipe Alves. 2012-06-12. Discovery of New Faint Northern Galactic Planetary Nebulae. https://arxiv.org/abs/1206.2477

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