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A New Technique for Characterising Planetary Nebulae in External Galaxies

Published online by Cambridge University Press:  12 April 2016

K. Taylor  and
N.G. Douglas
K. Taylor
Affiliation:
Anglo-Australian Observatory, Sydney, Australia
N.G. Douglas
Affiliation:
Anglo-Australian Observatory, Sydney, Australia

Abstract

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Planetary Nebulae are proving to be powerful tertiary distance indicators as well as sensitive probes of a galaxy’s velocity field and mass distribution. We present a new technique for determining the positions, luminosities and radial velocities of the PNe in an external galaxy which may enable a one-step measurement of all these parameters.

Type
1. Basic Principles, Focal Reducers
Information
International Astronomical Union Colloquium , Volume 149: Tridimensional Optical Spectroscopic Methods in Astrophysics , 1995 , pp. 33 - 37
Copyright
Copyright © Astronomical Society of the Pacific 1995