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J/A+A/506/1341 Magnetic white dwarfs model (Kuelebi+, 2009)
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table3.dat
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Beginning of ReadMe :J/A+A/506/1341 Magnetic fields in white dwarfs (Kuelebi+, 2009)
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Analysis of hydrogen-rich magnetic white dwarfs detected in the
Sloan Digital Sky Survey.
Kuelebi B., Jordan S., Euchner F., Gaensicke B.T., Hirsch H.
<Astron. Astrophys., 506, 1341-1350 (2009)>
=2009A&A...506.1341K
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ADC_Keywords: Stars, white dwarf ; Models ; Magnetic fields
Keywords: stars: white dwarfs - stars: magnetic fields - stars: atmospheres
Abstract:
A large number of magnetic white dwarfs discovered in the SDSS have so
far only been analyzed by visual comparison of the observations with
relatively simple models of the radiation transport in a magnetised
stellar atmosphere.
We model the structure of the surface magnetic fields of the
hydrogen-rich white dwarfs in the SDSS.
Description:
We calculated a grid of state-of-the-art theoretical optical spectra
of hydrogen-rich magnetic white dwarfs (WDs) with magnetic field
strengths of between 1MG and 1200MG for different angles between the
magnetic field vector and the line of sight, and for effective
temperatures between 7000K and 50000K. We used a least squares
minimization scheme with an evolutionary algorithm to find the
best-fit magnetic field geometry of the observed data. We used
centered dipoles or dipoles that had been shifted along the dipole
axis to model the coadded SDSS fiber spectrum of each object.