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Home All issues Volume 496 / No 3 (March IV 2009) A&A, 496 3 (2009) 891-902 Full HTML
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Table 1:

Summary of previously measured circular polarization in IPs.
Name Wavelength rangea Mean Min Max Integration time Total time Ref.1
  (nm) (%) (%) (%) (s)    
AE Aqr 350-920 $-0.03\pm0.02$     15 140 min 1
  I $-0.06\pm0.03$     15 150 min 1
  350-570 $-0.06\pm0.02$     5 390 min 1
  320-860 $+0.01\pm0.02$     8 $\times I^c$ $\times$2 2
  590-860 $-0.01\pm0.01$     1d 34 min 2
  320-860 $-0.13\pm0.03$     $8\times I^c$ $\times$5 2
  320-860 $+0.01\pm0.01$     $8~\times~~I^c$ $\times$3 2
  1150-1350 $+0.06\pm0.08$       4 min 2
  1450-1650 $-0.80\pm0.60$       7 min 2
  500-750 $+0.07\pm0.02$     5 255 min 3
  (550) $+0.06\pm0.01$     5 323 min 3
AO Psc 570-920 $+0.03\pm0.03$     240 180 min 1
  I       240 180 min 1
  320-860 $-0.05\pm0.06$     $8\times I^c$ $\times$1 2
  660-860 $+0.00\pm0.07$     $8\times I^c$ $\times$3 2
  320-860 $+0.03\pm0.03$     $8\times I^c$ $\times$2 2
BG CMi 640-860 $-0.24\pm0.03$     $2~\times~~ \sim 30$   4
  320-860 $-0.05\pm0.05$         5
  720-860 $-0.25\pm0.06$         5
  1110-1380(1250) $-1.74\pm0.26$         5
  1400-1650(1500) $-4.24\pm1.78$         5
DQ Her 370-580   -0.6b +0.6b 14.2 $\sim$1980 min 6
  320-860 $+0.01\pm0.01$       250 min 2
EX Hya 570-920 $-0.02\pm0.04$     240 200 min 1
  590-860 $+0.01\pm0.02$     2d 68 min 2
FO Aqr 640-860 $+0.06\pm0.02$         4
  330-920 $-0.01\pm0.02$     120 200 min 1
  I $+0.11\pm0.07$     240 200 min 1
  320-860 $-0.06\pm0.04$     $8\times I^c$ $\times$2 2
  320-860 $+0.01\pm0.04$     $8\times I^c$ $\times$6 2
  720-860 $-0.01\pm0.17$     $8\times I^c$ $\times$5 2
  1150-1350 $+0.19\pm0.13$       51 min 2
  1150-1350 $+1.09\pm0.31$       141 min 2
  Visual $+0.11\pm0.13$ -0.2b +0.3b 28 270 min 7
  IR $-0.01\pm0.55$ -1.3b +0.8b 28 270 min 7
GK Per 1150-1350 $+0.03\pm0.10$       45 min 2
PQ Gem U $+0.0\pm0.6$       80 min 8
  B $+0.0\pm0.6$       80 min 8
  V $+0.0\pm0.9$       80 min 8
  R   -1.1 +0.6   80 min 8
  U   -0.4b +0.3b $8\times 5$ 162 min 9
  B   -0.3b +0.4b $8\times 5$ 162 min 9
  V   -0.7b +0.7b $8\times 5$ 162 min 9
  R   -1.5b +0.7b $8\times 5$ 162 min 9
  I   -2.7 +1.5 $8\times 5$ 162 min 9
  U   -0.5b +0.3b   $\sim$730 min 10
  B   -0.2b +0.3b   $\sim$730 min 10
  V   -0.6b +0.4b   $\sim$730 min 10
  R   -1.0b +0.2b   $\sim$730 min 10
  I   -1.3b +1.3b   $\sim$730 min 10
  J   -1.2b +1.0b   $\sim$270 min 10
  K   -2.0b +1.3b   $\sim$460 min 10
RXJ2133 (360) $+0.90\pm0.06$ -0.2b +1.5 $4\times24$ 229 min 11
  (440) $+1.12\pm0.05$ +0.2b +2.5 $4\times24$ 229 min 11
  (530) $+1.17\pm0.09$ -0.3b +3.5 $4\times24$ 229 min 11
  (690) $+0.85\pm0.07$ +0.2b +3 $4\times24$ 229 min 11
  (830) $+0.89\pm0.08$ -0.4b +2.5 $4\times24$ 229 mn 11
TV Col 640-860 $-0.03\pm0.04$         4
  320-860 $-0.13\pm0.09$     $8\times I^c$ $\times$1 2
  320-860 $-0.07\pm0.07$     $8\times I^c$ $\times$3 2
  320-860 $-0.08\pm0.10$     $8\times I^c$ $\times$1 2
V1223 Sgr 350-920 $-0.06\pm0.03$     240 144 min 1
  I+ R $-0.04\pm0.07$     240 563 min 1
  V $-0.48\pm0.62$ $\gtrsim$-2 $\lesssim$+2 14   12
  R $+0.03\pm0.13$ $\gtrsim-0.5$ $\lesssim$+0.5 14   12
  J $-0.36\pm0.13$ $\gtrsim-1$ $\lesssim+$0.5 14   12
  K $+1.14\pm1.26$ $\gtrsim$-8 $\lesssim$+8 14   12
V2306 Cyg (360) $+0.04\pm0.06$     $8 \times 10$ (210) 872 min 13
  (440) $+0.16\pm0.08$     $8 \times 10$ (210) 872 min 13
  (530) $+0.18\pm0.11$     $8 \times 10$ (210) 872 min 13
  (690) $-0.55\pm0.08$ -1.3b +1b $8 \times 10$ (210) 872 min 13
  (830) $-0.91\pm0.14$ -1.7b +0.4b $8 \times 10$ (210) 872 min 13
  B $+0.32\pm0.10$ -0.3b +0.7b 58 52 min 14
  R $-1.99\pm0.11$ -5.2b -0.6b 45 55 min 14
V2400 Oph WL   -2.9b -1.0b 120 & 180 $\sim$900 min 15
  V $\sim$-1.8b -4.8b -1.0b 120 $\sim$33 min 15
  R $\sim$-2.3b -5.1b -0.5b 120 $\sim$71 min 15
  I $\sim$-3.3b -6.0b -1.0b 120 $\sim$32 min 15
  320-700 (470) $-0.90\pm0.03$     50   16
  560-900 (700) $-2.82\pm0.04$     50   16
V405 Aur 500-750 1.8 (Semi-amp)         17
  U   -2 +2 $8 \times 12$ (96) 1328 min 18
  B   -3 +3 $8 \times 12$ (96) 1328 min 18
  V   -3 +3 $8 \times 12$ (96) 1328 min 18
  R   -2 +2 $8 \times 12$ (96) 1328 min 18
  I   -1 +1 $8 \times 12$ (96) 1328 min 18
YY Dra 320-860 $+0.09\pm0.10$     $8\times I^c$ $\times$1 2
a Numbers in parentheses indicate the effective wavelength of the filter; b estimated from plots; c I corresponds to an unspecified time between 0.5-1 mn; d constant polarimeter position.
1 References - (1) Cropper (1986); (2) Stockman et al. (1992); (3) Beskrovnaya et al. (1996); (4) Penning et al. (1986); (5) West et al. (1987); (6) Swedlund et al. (1974); (7) Berriman et al. (1986); (8) Rosen et al. (1993); (9) Piirola et al. (1993); (10) Potter et al. (1997); (11) Katajainen et al. (2007); (12) Watts et al. (1985); (13) Uslenghi et al. (2001); (14) Norton et al. (2002); (15) Buckley et al. (1995); (16) Buckley et al. (1997); (17) Shakhovskoj & Kolesnikov (1997); (18) Piirola et al. (2008).

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