Magnetic white dwarfs from the Sloan Digital Sky Survey: The first data release

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dc.contributor.authorSchmidt, GD
dc.contributor.authorHarris, HC
dc.contributor.authorLiebert, J
dc.contributor.authorEisenstein, DJ
dc.contributor.authorAnderson, SF
dc.contributor.authorBrinkmann, J
dc.contributor.authorHall, PB
dc.contributor.authorHarvanek, M
dc.contributor.authorHawley, S
dc.contributor.authorKleinman, SJ
dc.contributor.authorKnapp, GR
dc.contributor.authorKrzesinski, J
dc.contributor.authorLamb, DQ
dc.contributor.authorLong, D
dc.contributor.authorMunn, JA
dc.contributor.authorNeilsen, EH
dc.contributor.authorNewman, PR
dc.contributor.authorNitta, A
dc.contributor.authorSchlegel, DJ
dc.contributor.authorSchneider, DP
dc.contributor.authorSilvestri, NM
dc.contributor.authorSmith, JA
dc.contributor.authorSnedden, SA
dc.contributor.authorSzkody, P
dc.contributor.authorBerk, DV
dc.date.accessioned2025-01-21T01:08:53Z
dc.date.available2025-01-21T01:08:53Z
dc.date.issued2003
dc.description.abstractBeyond its goals related to the extragalactic universe, the Sloan Digital Sky Survey (SDSS) is an effective tool for identifying stellar objects with unusual spectral energy distributions. Here we report on the 53 new magnetic white dwarfs discovered during the first two years of the survey, including 38 whose data are made public in the 1500 deg(2) First Data Release. Discoveries span the magnitude range 16.3 less than or equal to g less than or equal to 20.5, and based on the recovery rate for previously known magnetic white dwarfs, the completeness of the SDSS appears to be high for reasonably hot stars with B greater than or similar to 3 MG and g greater than or similar to 15. The new objects nearly double the total number of known magnetic white dwarfs and include examples with polar field strengths B-p > 500 MG, as well as several with exotic atmospheric compositions. The improved sample statistics and uniformity indicate that the distribution of magnetic white dwarfs has a broad peak in the range similar to5-30 MG and a tail extending to nearly 10(9) G. Degenerates with polar fields B-p greater than or similar to 50 MG are consistent with being descendents of magnetic Ap/Bp main-sequence stars, but low- and moderate-field magnetic white dwarfs appear to imply another origin. Yet-undetected magnetic F-type stars with convective envelopes that destroy the ordered underlying field are attractive candidates.
dc.fuente.origenWOS
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96520
dc.identifier.wosidWOS:000185675800043
dc.issue.numero2
dc.language.isoen
dc.pagina.final1113
dc.pagina.inicio1101
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectstars : magnetic fields
dc.subjectwhite dwarfs
dc.titleMagnetic white dwarfs from the Sloan Digital Sky Survey: The first data release
dc.typeartículo
dc.volumen595
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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