First detection of Zeeman absorption lines in the polar VV Puppis: Observations of low activity states

E. Mason; D. Wickramasinghe; S. B. Howell; P. Szkody

doi:10.1051/0004-6361:20065354

First detection of Zeeman absorption lines in the polar VV Puppis: Observations of low activity states

E. Mason^*, D. Wickramasinghe, S. B. Howell, P. Szkody

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

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 distribution. A more complex field structure and coupling process is implied making VV Puppis similar to other well studied AM Herculis type systems.

Original language	English
Pages (from-to)	277-281
Number of pages	5
Journal	Astronomy and Astrophysics
Volume	467
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361:20065354
Publication status	Published - May 2007

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title = "First detection of Zeeman absorption lines in the polar VV Puppis: Observations of low activity states",

abstract = "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 distribution. A more complex field structure and coupling process is implied making VV Puppis similar to other well studied AM Herculis type systems.",

keywords = "Binaries: close, Novae, cataclysmic variables, Stars: magnetic fields",

author = "E. Mason and D. Wickramasinghe and Howell, {S. B.} and P. Szkody",

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language = "English",

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T1 - First detection of Zeeman absorption lines in the polar VV Puppis

T2 - Observations of low activity states

AU - Mason, E.

AU - Wickramasinghe, D.

AU - Howell, S. B.

AU - Szkody, P.

PY - 2007/5

Y1 - 2007/5

N2 - 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 distribution. A more complex field structure and coupling process is implied making VV Puppis similar to other well studied AM Herculis type systems.

AB - 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 distribution. A more complex field structure and coupling process is implied making VV Puppis similar to other well studied AM Herculis type systems.

KW - Binaries: close

KW - Novae, cataclysmic variables

KW - Stars: magnetic fields

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DO - 10.1051/0004-6361:20065354

M3 - Article

SN - 0004-6361

VL - 467

SP - 277

EP - 281

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

First detection of Zeeman absorption lines in the polar VV Puppis: Observations of low activity states

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