Discovery of New Faint Northern Galactic Planetary Nebulae

Discovery of New Faint Northern Galactic Planetary Nebulae

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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:arXiv.org 2012-06
Hauptverfasser: Acker, Agnes, Boffin, Henri M J, Outters, Nicolas, Miszalski, Brent, Sabin, Laurence, Pascal Le Du, Alves, Filipe
Format: Artikel
Sprache:eng
Schlagworte:
Celestial bodies
Nebulae
Planetary nebulae
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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.
ISSN:2331-8422