期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 429, 期 4, 页码 2934-2944出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/sts522
关键词
stars: magnetic field; white dwarfs
资金
- CNPq
- FAPERGS - Pronex - Brazil
- Austrian Fonds zur Forderung der wissenschaftlichen Forschung [P 21830-N16]
- MICINN [AYA08-1839/ESP]
- ESF EUROCORES Program EuroGENESIS (MICINN) [EUI2009-04170]
- Generalitat de Catalunya [2009SGR315]
- EU-FEDER funds
- US National Science Foundation [AST-0909107]
- Norman Hackerman Advanced Research Program [003658-0252-2009]
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- Austrian Science Fund (FWF) [P 21830] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [0909107] Funding Source: National Science Foundation
To obtain better statistics on the occurrence of magnetism among white dwarfs, we searched the spectra of the hydrogen atmosphere white dwarf stars (DAs) in the Data Release 7 of the Sloan Digital Sky Survey (SDSS) for Zeeman splittings and estimated the magnetic fields. We found 521 DAs with detectable Zeeman splittings, with fields in the range from around 1 to 733 MG, which amounts to 4 per cent of all DAs observed. As the SDSS spectra have low signal-to-noise ratios, we carefully investigated by simulations with theoretical spectra how reliable our detection of magnetic field was.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据