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Revised Abundances & Ionizing Fluxes for [WC]-Type PN Central Stars Using Line Blanketed Models

Published online by Cambridge University Press:  26 May 2016

Paul A. Crowther ,
Jay B. Abbott ,
D. John Hillier  and
Orsola De Marco
Paul A. Crowther
Affiliation:
Dept of Physics & Astron, UCL, Gower St. London WC1E 6BT, UK
Jay B. Abbott
Affiliation:
Dept of Physics & Astron, UCL, Gower St. London WC1E 6BT, UK
D. John Hillier
Affiliation:
Dept of Physics & Astron., Univ. of Pittsburgh, 3941 O'Hara St, Pittsburgh, PA 15260, USA
Orsola De Marco
Affiliation:
Astrophys. Dept, AMNH, Central Park W., New York, NY 10024, USA

Abstract

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UV (IUE), far-UV (FUSE) and optical (INT) spectroscopy of four Galactic [WC]-type PN central stars are analysed by means of sophisticated model atmosphere codes which allow for detailed line blanketing and clumping, and make comparisons with earlier non-LTE models. Crucially, we find no systematic difference between carbon abundances amongst late and early-type [WC] stars, removing the main obstacle against evolution from [WCL] to [WCE] subtypes.

Type
Part IV: Central Stars and their Atmospheres
Information
Symposium - International Astronomical Union , Volume 209: Planetary Nebulae: Their Evolution and Role in the Universe , 2003 , pp. 243 - 244
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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