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Planetary Nebulae as Standard Candles for Extragalactic Distances

Published online by Cambridge University Press:  19 July 2016

G. Jacoby ,
H. Ford  and
R. Ciardullo
G. Jacoby
Affiliation:
NOAO/Kitt Peak National Observatory
H. Ford
Affiliation:
Space Telescope Science Institute
R. Ciardullo
Affiliation:
Department of Terrestrial Magnetism/Carnegie Inst, of Wash

Abstract

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Although distances to galactic planetary nebulae are typically uncertain by factors near 2, there appears to be an upper limit to the integrated [O III] λ5007 absolute flux for planetary nebulae. This flux, 1.34 × 10−8 ergs/cm2/sec for a maximally bright planetary nebula at a distance of 1 kpc, can be used as a distance indicator when a sufficient number of planetaries have been identified in an external galaxy. Or one may compute the upper limit to the distance for galactic planetary nebulae based on this calibration.

Type
IV. Extragalactic Nebulae
Information
Symposium - International Astronomical Union , Volume 131: Planetary Nebulae , 1989 , pp. 357 - 358
Copyright
Copyright © Kluwer 1989