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The Radial Velocities of Planetary Nebulae in NGC 3379

Published online by Cambridge University Press:  07 August 2017

Robin Ciardullo  and
George Jacoby
Robin Ciardullo
Affiliation:
Department of Astronomy and Astrophysics, Penn State University, 525 Davey Lab, University Park, Pennsylvania 16802, USA
George Jacoby
Affiliation:
Kitt Peak National Observatory, National Optical Astronomy Observatories, P.O. Box 26732, Tucson, Arizona 85726, USA

Extract

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Several authors have analyzed the kinematics of elliptical galaxies using surface photometry in combination with absorption line velocity dispersion measurements. However, these analyses never explore the halos of galaxies, since the best absorption line measurements extend only ∼1 re . The only way to extend our knowledge of stellar kinematics to larger radii is to use the emission lines of planetary nebula for radial velocity measurements.

Type
VI. Planetary Nebulae in Galactic Systems
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 570
Copyright
Copyright © Kluwer 1993 

References

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