Planetary nebulae as tracers of galaxy stellar populations

Details Planetary nebulae as tracers of galaxy stellar populations Planetary nebulae as tracers of galaxy stellar populations

2006-02-21

arxiv.org/abs/astro-ph/0602458v1

Mon.Not.Roy.Astron.Soc.368:877-894,2006

Astronomy and Astrophysics

Astrophysics

19 pages and 15 colour figures - Use mn2e.cls latex style. To appear on MNRAS - See http://www.bo.astro.it/~eps/home.html for

Scientific paper

10.1111/j.1365-2966.2006.10163.x

We address the general problem of the luminosity-specific planetary nebula (PN) number, defined as alpha = N(PN)/L(gal), and its relationship with age and metallicity of the parent stellar population. Our analysis relies on population synthesis models for simple stellar populations and more elaborated galaxy models along the full star-formation range of the Hubble morphological sequence. This theoretical framework is compared with the updated census of the PN population in Local Group galaxies and external ellipticals in the Leo group, and the Virgo and Fornax clusters.

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