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Planetary nebula populations and kinematics

Published online by Cambridge University Press:  30 August 2012

Michael G. Richer
Michael G. Richer*
Affiliation:
Instituto de Astronomía, UNAM, PO Box 439027, San Diego, CA 92143 email: [email protected]
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Abstract

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The brightest planetary nebulae achieve similar maximum luminosities, have similar ratios of chemcial abundances, and apparently share similar kinematics in all galaxies. These similarities, however, are not necessarily expected theoretically and appear to hide important evolutionary differences. As predicted theoretically, metallicity appears to affect nebular kinematics, if subtly, and there is a clear variation with evolutionary stage. To the extent that it can be investigated, the internal kinematics for galactic and extragalactic planetary nebulae are similar. The extragalactic planetary nebulae for which kinematic data exist, though, probably pertain to a small range of progenitor masses, so there may still be much left to learn, particularly concerning the kinematics of planetary nebulae that descend from the more massive progenitors.

Keywords

Stars: evolutionstars: mass lossplanetary nebulae: generalISM: kinematics and dynamicsGalaxy: bulgegalaxies: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 243 - 250
Copyright
Copyright © International Astronomical Union 2012

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