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Iron Abundance in the Prototype PG 1159 Star, GW Vir Pulsator PG 1159-035, and Related ObjectsWe performed an iron abundance determination of the hot, hydrogen deficient post-AGB star PG 1159-035. which is the prototype of the PG 1159 spectral class and the GW Vir pulsators, and of two related objects (PG 1520+525, PG 1144+005), based on the first detection of Fe VIII lines in stellar photospheres. In another PG 1159 star. PG 1424+535. we detect Fe VII lines. In all four stars, each within T(sub eff) = 110,000-150,000 K, we find a solar iron abundance. This result agrees with our recent abundance analysis of the hottest PG 1159 stars (T(sub eff) = 150,000-200,000 K) that exhibit Fe x lines. On the whole, we find that the PG 1159 stars are not significantly iron deficient, in contrast to previous notions.
Document ID
20110023490
Document Type
Reprint (Version printed in journal)
Authors
Werner, K. (Institute for Astronomy and Astrophysics Tuebingen, Germany)
Rauch, T. (Institute for Astronomy and Astrophysics Tuebingen, Germany)
Kruk, J. W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kurucz, R. L. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 25, 2013
Publication Date
July 4, 2011
Publication Information
Publication: Astronomy and Astrophysics
Volume: 531
Issue: 6
Subject Category
Astronomy
Report/Patent Number
GSFC.JA.5432.2011
Funding Number(s)
CONTRACT_GRANT: NAS5--32985
CONTRACT_GRANT: DLR 05 OR 0806
CONTRACT_GRANT: NAS5-26555
CONTRACT_GRANT: NNX09AF08G
Distribution Limits
Public
Copyright
Other