Symbiotic Stars and Planetary Nebulae in the λ5007/Hβ vs. λ4363/Hγ Diagnostic Diagram
Abstract
In this work the location of a sample of 174 flux measurements (planetary nebulae, S, D, D'-type Symbiotic Star (SS) and six peculiar objects) on the λ5007/Hβ vs. λ4363/Hγ diagnostic diagram are compared, in order to investigate possible differences in electron density and temperature among them. Helium abundances, electron density and temperature were obtained for five D'-type SS and HD149427 (PC 11). In order to calculate them, expressions normally used for objects with low density were modified, in such a way that they can be used in objects with higher densities.
- Publication:
-
Stellar Populations - Planning for the Next Decade
- Pub Date:
- April 2010
- DOI:
- 10.1017/S1743921310002978
- Bibcode:
- 2010IAUS..262..307B
- Keywords:
-
- binaries: symbiotic;
- novae;
- cataclysmic variables;
- planetary nebulae: general