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First detection of Zeeman absorption lines in the polar VV Pup; observations of low activity states

Mason, E; Wickramasinghe, Dayal; Howell, S.B.; Szkody, Paula

Description

Aims. We investigated the low state of the polar VV Pup by collecting high S/N time series spectra. Methods. We monitored VV Pup with VLT+FORS1 and analyzed the evolution of its spectroscopic features across two orbits. Results. We report the first detection of photospheric Zeeman lines in VV Puppis. We argue that the photospheric field structure is inconsistent with the assumption that the accretion shocks are located close to the foot points of a closed field line in a dipolar field...[Show more]

dc.contributor.authorMason, E
dc.contributor.authorWickramasinghe, Dayal
dc.contributor.authorHowell, S.B.
dc.contributor.authorSzkody, Paula
dc.date.accessioned2015-12-08T22:33:27Z
dc.identifier.issn0004-6361
dc.identifier.urihttp://hdl.handle.net/1885/34689
dc.description.abstractAims. We investigated the low state of the polar VV Pup by collecting high S/N time series spectra. Methods. We monitored VV Pup with VLT+FORS1 and analyzed the evolution of its spectroscopic features across two orbits. Results. We report the first detection of photospheric Zeeman lines in VV Puppis. We argue that the photospheric field structure is inconsistent with the assumption that the accretion shocks are located close to the foot points of a closed field line in a dipolar field distribution. A more complex field structure and coupling process is implied making VV Puppis similar to other well studied AM Herculis type systems.
dc.publisherSpringer
dc.sourceAstronomy and Astrophysics
dc.subjectKeywords: Absorption spectra; Galaxies; Magnetic fields; Sun; Time series analysis; Accretion shocks; Cataclysmic variables; Photospheric field structure; Astrophysics Binaries: close; Novae, cataclysmic variables; Stars: magnetic fields
dc.titleFirst detection of Zeeman absorption lines in the polar VV Pup; observations of low activity states
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume467
dc.date.issued2008
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationu3169606xPUB116
local.type.statusPublished Version
local.contributor.affiliationMason, E, European Southern Observatory
local.contributor.affiliationWickramasinghe, Dayal, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationHowell, S.B., National Optical Astronomy Observatory
local.contributor.affiliationSzkody, Paula, University of Washington
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage277
local.bibliographicCitation.lastpage281
local.identifier.doi10.1051/0004-6361:20065354
dc.date.updated2015-12-08T09:36:05Z
local.identifier.scopusID2-s2.0-34249330991
local.identifier.thomsonID000246417900031
CollectionsANU Research Publications

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