dc.contributor.author | Aznar Cuadrado, R. | |
dc.contributor.author | Jordan, S. | |
dc.contributor.author | Napiwotzki, R. | |
dc.contributor.author | Schmid, H.M. | |
dc.contributor.author | Solanki, S.K. | |
dc.contributor.author | Mathys, G. | |
dc.date.accessioned | 2007-12-17T09:56:50Z | |
dc.date.available | 2007-12-17T09:56:50Z | |
dc.date.issued | 2004 | |
dc.identifier.citation | Aznar Cuadrado , R , Jordan , S , Napiwotzki , R , Schmid , H M , Solanki , S K & Mathys , G 2004 , ' Discovery of kilogauss magnetic fields in three DA white dwarfs ' , Astronomy and Astrophysics , vol. 423 , pp. 1081-1094 . https://doi.org/10.1051/0004-6361:20040355 | |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | dspace: 2299/1199 | |
dc.identifier.uri | http://hdl.handle.net/2299/1199 | |
dc.description | Original article can be found at: http://www.aanda.org/--Copyright The European Southern Observatory --DOI : 10.1051/0004-6361:20040355 | |
dc.description.abstract | We have detected longitudinal magnetic fields between 2 and 4 kG in three (WD0446−790, WD1105−048, WD2359−434) out of a sample of 12 normal DA white dwarfs by using optical spectropolarimetry done with the VLT Antu 8 m telescope equipped with FORS1.With the exception of 40 Eri B (4 kG) these are the first positive detections of magnetic fields in white dwarfs below 30 kG. Although suspected, it was not clear whether a significant fraction of white dwarfs contain magnetic fields at this level. These fields may be explained as relics from magnetic fields in the main-sequence progenitors considerably enhanced by magnetic flux conservation during the shrinkage of the core. A detection rate of 25% (3/12) may indicate now for the first time that a substantial fraction of white dwarfs have a weak magnetic field. This result, if confirmed by future observations, would form a cornerstone for our understanding of the evolution of stellar magnetic fields. | en |
dc.format.extent | 719446 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy and Astrophysics | |
dc.title | Discovery of kilogauss magnetic fields in three DA white dwarfs | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1051/0004-6361:20040355 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |