Abstract
Ring Planetary Nebulae associated with secondary structures or not, are considered as objects belonging to the typical «Butterfly Nebulae» class. They are seen at different inclination angles with respect to the plane of the sky, as pointed out by Minkowski and Osterbrock (1960). Our monochromatic observations made at both ESO (Chile) and Observatoire de Haute-Provence (France) all favour the geometrical structure assuming two bubbles located on both sides of a denser toroid. In order to take into account the fact that Ring Planetary Nebulae are seen in different evolutionary stages, the Champagne Model is proposed following the Tenorio-Taggle effect (1979) coupled with the rotation of the nucleus (Louise, 1973).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
