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Quantitative UV spectroscopy of early O stars on the Magellanic Clouds: The determination of the stellar metallicitiesUltraviolet spectra of four O stars in the Magellanic Clouds obtained with the faint object spectrograph of the Hubble Space Telescope are analyzed with respect to their metallicity. The metal abundances are derived from the stellar parameters and the mass loss rate with a two step procedure: hydrodynamic radiation-driven wind models with metallicity as a free parameter are constructed to fit the observed wind momentum rate and thus yield a dynamical metallicity, and synthetic spectra are computed for different metal abundances and compared to the observed spectra in order to obtain a spectroscopic metallicity.
Document ID
19980047344
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Haser, Stefan M.
(Technische Univ. Munich Germany)
Pauldrach, Adalbert W. A.
(Technische Univ. Munich Germany)
Lennon, Danny J.
(Technische Univ. Munich Germany)
Kudritzki, Rolf-Peter
(Technische Univ. Munich Germany)
Lennon, Maguerite
(Technische Univ. Munich Germany)
Puls, Joachim
(Technische Univ. Munich Germany)
Voels, Stephen A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 18, 2013
Publication Date
November 1, 1997
Subject Category
Astronomy
Report/Patent Number
MPA-1052
NASA/TM-97-207710
NAS 1.15:207710
Funding Number(s)
CONTRACT_GRANT: BMBF-50-R-93040
CONTRACT_GRANT: DFG-Pa-477/1-2
Distribution Limits
Public
Copyright
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