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| Paper: |
Evolution of the Central Stars of Young Planetary Nebulae |
| Volume: |
493, 19th European Workshop on White Dwarfs |
| Page: |
533 |
| Authors: |
Hajduk, M.; van Hoof, P. A. M.; Zijlstra, A. A. |
| Abstract: |
The evolution of central stars of planetary nebulae was hitherto documented in just a few cases. We look for evolutionary changes of the [O iii] 5007 Å line flux in the spectra of planetary nebulae. We compared nebular fluxes collected over a time interval of a decade or more. We used literature data and newly obtained spectra. A grid of Cloudy models was computed using existing evolutionary models and compared with the observations. The observed evolution of the [O iii] 5007 Å/rmHβ line flux ratio is consistent with the evolutionary model calculations for H-rich central stars. Low-excitation planetary nebulae with [WR]-type and wels central stars show slower evolution than their coutnerparts containing H-rich central stars. |
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