1. Planetary Nebulae as tracers of the diffuse IG stellar background: a population synthesis theoretical approach Alberto Buzzoni (1) & Magda Arnaboldi (2) (1) INAF – Oss. Astronomico di Bologna (2) INAF – Oss. Astronomico di Torino

2. (PAGB) / L (tot) = В x Fuel N (PN) / L (tot) = B x τ Fuel / L (hot-PAGB) N (PN) / M (tot) = B x τ / (M/L) Renzini & Buzzoni (1986)

3. Hot-PAGB Fuel Consumption

4. Bolometric correction vs. Galaxy morphology (Buzzoni 2002)

5. PN Luminosity Function N(m) = A e 0.307m [1-e 3(m-m*) ] (Ciardullo et al. 1989)

6. PN Specific Luminosity Rate (SSP)

7. PN lifetime Stanghellini & Renzini (2000)

8. PN Specific Luminosity Rate in Template Galaxies α 2.5 SMC M31 M32 LMC

9. PNe as luminosity tracers Dorman et al. (1993)

10. Where to find all these data...and more www.bo.astro.it/~eps/home.html