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J/A+AS/102/343 UBVRI polarization of RS CVn-type binaries (Scaltriti+ 1993)
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UBVRI linear and circular polarization of RS CVn-type binaries
Scaltriti F., Piirola V., Coyne G.V., Koch S.J.R.H., Elias N.M.,
Holenstein B.D.
<Astron. Astrophys. Suppl. Ser. 102, 343 (1993)>
=1993A&AS..102..343S
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ADC_Keywords: Binaries, spectroscopic; Photometry, UBVRI; Polarization
Keywords: stars: close binaries - polarization - stars: circumstellar matter
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3 66 343 UBVRI polarisation observations
table4 55 29 V Polarisation parameters of II Peg
table5a 75 34 Second harmonic Fourier coefficients
table6 46 15 Overall mean polarisations
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10 A1 --- Fil. [UBVRI] Filter
12- 19 F8.3 d JD Date
21- 25 F5.3 --- Phase
29 A1 --- n_P [ c] If c, circular polarisation for Px and Py
30- 35 F6.3 % Px ? Linear (circular when c) polarisation
40- 45 F6.3 % Py Linear (circular when c) polarisation
51- 55 F5.3 --- e_P rms uncertainty on polarisation
61 I1 --- S Observing site: 1= Kitt Peak, 2= La Palma,
3= Pennsylvania, 4= Turin
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 12 A12 --- N Periode
17- 22 F6.4 --- Phase Phase
25- 30 F6.3 % Px Polarisation
33- 37 F5.3 % e_Px rms uncertainty on Px
40- 45 F6.3 % Py Polarisation
48- 52 F5.3 % e_Py rms uncertainty on Py
54- 55 I2 --- n Number of data entries for each bin
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Byte-by-byte Description of file: table5a
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name Star name
8 A1 --- Fil. [UBVRI] Filter
15- 16 A2 --- P Polarisation, Px or Py
20- 25 F6.3 --- const. Second harmonic Fourier coeff.: constant
31- 35 F5.3 --- e_const. rms uncertainty on const.
40- 45 F6.3 --- cos(2x) Second harmonic Fourier coeff.: cos 2x
51- 55 F5.3 --- e_cos(2x) rms uncertainty on cos(2x)
60- 65 F6.3 --- sin(2x) Second harmonic Fourier coeff.: sin 2x
71- 75 F5.3 --- e_sin(2x) rms uncertainty on sin(2x)
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Table 5b: Harmonic coeff. determined separately from the normal points
of the two observing seasons, and from the combined data normal
points, of II Peg in the V band. The fittings were made here
independently for the first and the second harmonic, and
correspondingly two values of the constant term C(1) and C(2) are
given.
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Par C(1) (%) A(1) (%) B(1) (%) C(2) (%) A(2) (%) B(2)
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JD 7803-7901:
Px 0.011 0.022 -0.010 0.011 0.001 -0.042
+/- 0.009 0.011 0.010 0.009 0.011 0.010
Py -0.028 -0.016 0.038 -0.025 0.017 -0.011
+/- 0.013 0.014 0.011 0.013 0.014 0.014
JD 8162-8248:
Px 0.003 -0.007 0.024 0.002 0.012 -0.006
+/- 0.008 0.009 0.010 0.008 0.009 0.010
Py -0.025 -0.021 0.026 -0.024 0.007 0.010
+/- 0.009 0.011 0.013 0.009 0.013 0.012
All data:
Px 0.008 0.002 0.010 0.008 0.004 -0.019
+/- 0.006 0.007 0.008 0.006 0.007 0.007
Py -0.022 -0.018 0.026 -0.019 0.013 0.000
+/- 0.007 0.009 0.009 0.007 0.009 0.010
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Table 5c: Chi-2 test of fits to a constant and the first
and the second harmonic sinusoidal fits.
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Fil. Px Py
X(C) X(1) X(2) X(C) X(1) X(2) n
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UX Ari:
B 1.830 1.657 1.902 3.090 1.925 1.879 6
V 2.835 2.680 2.907 1.932 1.776 2.133 12
R 1.130 1.183 1.352 4.280 4.662 2.728 10
DK Dra:
U 0.819 0.895 1.064 1.144 1.517 1.844 6
B 0.778 0.931 0.614 0.826 1.087 1.217 7
V 1.515 1.760 0.931 0.489 0.142 0.616 7
R 1.448 0.629 1.648 6.487 1.018 8.096 7
I 0.981 1.314 1.280 7.814 2.945 4.878 7
GK Hya:
U 1.238 0.455 0.540 1.009 1.482 0.443 7
B 2.073 2.316 2.536 1.517 2.206 2.094 7
V 2.219 2.219 2.010 6.340 5.605 2.752 11
R 3.064 3.690 2.203 3.316 3.188 3.429 11
I 4.575 2.845 5.492 3.057 3.632 3.486 10
II Peg (normal points) all data:
U 1.641 1.677 0.979 1.230 1.524 1.975 6
B 5.755 8.845 2.778 2.324 0.408 1.140 5
V 1.905 2.148 1.511 2.706 1.903 3.168 10
R 1.259 1.525 1.156 1.965 1.950 0.994 8
I 1.047 0.175 1.489 1.899 1.737 2.479 6
II Peg (normal points) JD 7803-7901:
V 3.698 3.778 2.028 1.866 1.092 1.984 10
II Peg (normal points) JD 8162-8248:
V 1.752 1.175 2.045 2.256 1.800 2.778 9
AR Psc:
R 2.091 2.578 2.488 0.822 0.387 0.300 6
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
14- 18 F5.3 % P Mean polarisation
23- 27 F5.3 % e_P rms uncertainty on P
31- 33 I3 deg PA Polarisation angle
39- 40 I2 deg e_PA rms uncertainty on polarisation angle
46 A1 --- IRexc [ +?] Indication on IR excitation
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Table 7: Fits to the Serkowski law for the wavelength dependence of
interstellar polarization. Formal errors from the fit are given
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Star Pm (%) m.e. m (um) m.e.
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CQ Aur 0.216 + 0.007 0.508 + 0.055
RU Cnc 0.064 0.005 0.741 0.063
RZ Cnc 0.084 0.008 0.582 0.137
VV Mon 0.197 0.001 0.581 0.007
AR Mon 0.123 0.008 0.613 0.107
RZ Eri 0.281 0.006 0.632 0.048
UX Mon 0.217 0.004 0.364 0.019
GK Hya:
1990 Feb 15 0.184 0.014 0.813 0.214
1990 Feb 16 0.115 0.004 0.490 0.052
(all data) 0.125 0.007 0.444 0.104
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Table 8: Weighted mean values of polarization in the UBVRI bands for
UX Ari, DK Dra, and II Peg
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Fil. Px (%) Py P (%) m.e. P.A. m.e.
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UX Ari:
U 0.035 -0.008 0.036 0.062 173.3 30.0
B -0.009 0.038 0.039 0.021 51.4 14.0
V -0.012 -0.014 0.019 0.015 115.1 18.9
R -0.016 -0.030 0.034 0.014 121.4 10.9
I -0.061 -0.054 0.081 0.022 110.8 7.5
DK Dra:
U 0.016 0.012 0.020 0.050 18.2 34.2
B 0.021 -0.017 0.027 0.023 160.3 20.5
V -0.020 0.014 0.025 0.012 72.1 12.7
R -0.026 0.025 0.036 0.007 68.2 5.5
I -0.035 0.045 0.057 0.011 63.8 5.4
II Peg:
U -0.010 -0.076 0.077 0.039 131.1 13.5
B 0.032 -0.040 0.051 0.021 154.0 11.2
V 0.009 -0.023 0.025 0.008 145.8 8.3
R 0.017 -0.010 0.020 0.007 164.6 9.2
I 0.017 -0.003 0.018 0.009 175.5 13.7
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(End) Patricia Bauer [CDS] 12-Oct-1993