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Planetary Nebulae, Globular Clusters and the Galactic Halo
Published online by Cambridge University Press: 12 April 2016
Abstract
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 LB ⋍ 2 × 108L⊙. From the work of Oort it is estimated that the galactic halo has a mass of at least so that for the galactic halo.
- Type
- Part I / General Problems of Variables in Population II Systems
- Information
- International Astronomical Union Colloquium , Volume 21: Variable Stars in Globular Clusters and in Related Systems , August 1973 , pp. 26 - 28
- Copyright
- Copyright © Reidel 1973