A “FIREWORK” OF H2KNOTS IN THE PLANETARY NEBULA NGC 7293 (THE HELIX NEBULA)
نویسندگان
چکیده
منابع مشابه
The tails in the Helix Nebula NGC 7293
Aims. We have examined a stream-source model for the production of the cometary tails observed in the Helix Nebula NGC 7293 in which a transonic or moderately supersonic stream of ionized gas overruns a source of ionized gas. We have compared the velocity structures calculated with the available observational data. We have also investigated the suggestion that faint striations visible in the ne...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2009
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/700/2/1067