Abstract
The internal motions of the ionized gas in the shells of planetary nebulae (PNe) have served as relevant diagnostic tools to understand the development of this important stage of stellar evolution. This work highlights some of the kinematic studies that have impacted the most on the understanding of the structure and evolution of the ionized envelope. These studies include the basic wind-driven isotropic expansion, the occurrence of complex shell morphology and unexpected fluid dynamics, such as high-speed, bipolar, collimated outflows. The current status on the subject and possible future trends are discussed in the closing remarks.
Sign-in/Register to access full text options 
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.
