Planetary Nebulae, Globular Clusters and the Galactic Halo

Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 36)


Planetary nebulae are used as a tracer for halo Population II stars. A comparison of the number of planetary nebulae in the galactic pole caps (|b| ≥ 45°) with the number of planetaries in globular clusters suggests that (to within a factor of 2 or 3) the galactic halo has a luminosity L B ≃ 2 × 108 L . From the work of Oort it is estimated that the galactic halo has a mass of at least 6 ×109M so that M/L > 30 for the galactic halo.


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Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1973

Authors and Affiliations

  1. 1.David Dunlap ObservatoryUniversity of TorontoRichmond HillCanada

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