2008/12/10 by B. Külebi, Baybars Külebi, S. Jordan +6
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Dipole #Magnetic dipole #Magnetic field #Physics #Quantum mechanics #Spectral line #Stars #Stellar, planetary, and galactic studies #White dwarf #astro-ph
paper · pdf · doi:10.1088/1742-6596/172/1/012047
published as J.Phys.Conf.Ser.172:012047,2009 · to appear in the proceedings of the 16th European Workshop on White Dwarfs, Barcelona, 2008
arxiv created 2008/12/10 · openalex publication_date 2009/06/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have calculated optical spectra of hydrogen-rich (DA) white dwarfs with magnetic field strengths between 1 MG and 1000 MG for temperatures between 7000 K and 50000 K. Through a least-squares minimization scheme with an evolutionary algorithm, we have analyzed the spectra of 114 magnetic DAs from the SDSS (95 previously published plus 14 newly discovered within SDSS, and five discovered by SEGUE). Since we were limited to a single spectrum for each object we used only centered magnetic dipoles or dipoles which were shifted along the magnetic dipole axis. We also statistically investigated the distribution of magnetic-field strengths and geometries of our sample.