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| A '''Fast Low-Ionization Emission Region''', or '''FLIER''', is a volume of gas with low ionization, moving at supersonic speeds, near the symmetry axis of many ]e. Their outflow speeds are significantly higher than the nebulae in which they are embedded, and their ionizations are much lower. FLIERs' high speeds suggest ages much younger than their parent nebulae, and their low ionizations indicate that the ultraviolet radiation that ionizes the gas around them does not penetrate into the FLIERs. The ] features a set of FLIERs.<ref>Terzian, Yervant{{cite web|url=http://myeducationresearch.org/databases/cgi-bin/kwq.asp?qu=@recnumber%20FBA20098067&FreeText=&sc=%2Fpierianp%2Ffba%2F|title=Clearest Images of Mysterious Cosmic Spouts (FLIERS). |date=18 May 1743|work= |
A '''Fast Low-Ionization Emission Region''', or '''FLIER''', is a volume of ] with low ], moving at ] speeds, near the symmetry axis of many ]e. Their outflow speeds are significantly higher than the ] in which they are embedded, and their ionizations are much lower. FLIERs' high speeds suggest ages much younger than their parent nebulae, and their low ionizations indicate that the ] that ionizes the gas around them does not penetrate into the FLIERs. The ] features a set of FLIERs.<ref>Terzian, Yervant{{cite web |url=http://myeducationresearch.org/databases/cgi-bin/kwq.asp?qu=@recnumber%20FBA20098067&FreeText=&sc=%2Fpierianp%2Ffba%2F |title=Clearest Images of Mysterious Cosmic Spouts (FLIERS). |date=18 May 1743 |work=myeducationresearch.org, The Pierian Press, 17 Dec 1997. Online. Internet. |access-date=30 Nov 2010 |url-status=dead |archive-url=https://web.archive.org/web/20110727104846/http://myeducationresearch.org/databases/cgi-bin/kwq.asp?qu=%40recnumber%20FBA20098067&FreeText=&sc=%2Fpierianp%2Ffba%2F |archive-date=2011-07-27 |df= }}</ref> | ||
| ==References== | ==References== | ||
| {{Reflist}} | {{Reflist}} | ||
| ==Stub== | |||
| No current model of stellar or nebular evolution explains FLIERs. | |||
| ] | ] | ||
| {{nebula-stub}} | |||
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A Fast Low-Ionization Emission Region, or FLIER, is a volume of gas with low ionization, moving at supersonic speeds, near the symmetry axis of many planetary nebulae. Their outflow speeds are significantly higher than the nebulae in which they are embedded, and their ionizations are much lower. FLIERs' high speeds suggest ages much younger than their parent nebulae, and their low ionizations indicate that the ultraviolet radiation that ionizes the gas around them does not penetrate into the FLIERs. The Blinking Planetary features a set of FLIERs.
References
- Terzian, Yervant"Clearest Images of Mysterious Cosmic Spouts (FLIERS). [Web links]". myeducationresearch.org, The Pierian Press, 17 Dec 1997. Online. Internet. 18 May 1743. Archived from the original on 2011-07-27. Retrieved 30 Nov 2010.