2007A&A...467..277M

Query : 2007A&A...467..277M

2007A&A...467..277M - Astronomy and Astrophysics, volume 467, 277-281 (2007/5-3)

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

MASON E., WICKRAMASINGHE D., HOWELL S.B. and SZKODY P.

Abstract (from CDS):

We investigated the low state of the polar VV Pup by collecting high S/N time series spectra. We monitored VV Pup with VLT+FORS1 and analyzed the evolution of its spectroscopic features across two orbits. 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.

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Journal keyword(s): novae, cataclysmic variables - stars: magnetic fields - binaries: close

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* BL Hyi CV* 01 41 00.3996430344 -67 53 27.470100660   14.9       Am 210 0
2 V* EF Eri CV* 03 14 13.2526234800 -22 35 42.900077688   15.4 14.53 13.5   ~ 433 0
3 V* VV Pup CV* 08 15 06.8009599464 -19 03 17.765706024     13.90     M7V 398 0
4 * 93 Leo RS* 11 47 59.13595 +20 13 08.1500   5.07 4.52     F8III+A6III 220 1
5 WG 22 WD* 12 38 49.7811220835 -49 48 00.219515411   14.14 13.96     DA4.2 228 0
6 PG 1550+191 CV* 15 52 47.1968971224 +18 56 28.844471472   16.4 15.46 17.0   M6.5Ve 189 0
7 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 483 0

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