The Circumstellar Extinction of Planetary Nebulae

Details The Circumstellar Extinction of Planetary Nebulae The Circumstellar Extinction of Planetary Nebulae

1998-12-09

arxiv.org/abs/astro-ph/9812169v1

Astronomy and Astrophysics

Astrophysics

12 pages, 2 figures, accepted for ApJ, April 10, 1999

Scientific paper

10.1086/307025

We analyze the dependence of circumstellar extinction on core mass for the brightest planetary nebulae (PNe) in the Magellanic Clouds and M31. We show that in all three galaxies, a statistically significant correlation exists between the two quantities, such that high core mass objects have greater extinction. We model this behavior, and show that the relation is a simple consequence of the greater mass loss and faster evolution times of high mass stars. The relation is important because it provides a natural explanation for the invariance of the [O III] 5007 planetary nebula luminosity function (PNLF) with population age: bright Population I PNe are extinguished below the cutoff of the PNLF. It also explains the counter-intuitive observation that intrinsically luminous Population I PNe often appear fainter than PNe from older, low-mass progenitors.

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