J/A+A/448/1075 UBVRI photometry and polarimetry of DF Tau (Shakhovskoj+, 2006)
Photopolarimetric activity and circumstellar environment of the young binary
system DF Tau.
Shakhovskoj D., Grinin V., Rostopchina, A., Schertl D., Hofmann K.-H.,
Weigelt G., Balega Yu., Kiyaeva O., Melnikov S.
<Astron. Astrophys. 448, 1075 (2006)>
=2006A&A...448.1075S 2006A&A...448.1075S
ADC_Keywords: Stars, double and multiple ; Photometry, UBVRI ; Polarization
Keywords: techniques: photometric - stars: pre-main sequence -
techniques: interferometric - techniques: polarimetric -
binaries: general - stars: individual: DF Tau
Abstract:
The results of multi-year photometric and polarimetric observations of
the young binary system DF Tau in UBVRI bands as well as bispectrum
speckle interferometric observations in the H and K bands are
presented. The photometric and polarimetric observations suggest the
linear poarization variation has substantially a stochastic character.
Description:
Photometric and polarimetric observations of DF Tau were carried out
between 1991 and 1998 using the five-band photopolarimeter mounted at
the 1.25m telescope of the Crimean Astrophysical Observatory (CrAO).
This instrument permits simultaneous observations of polarization and
brightness in the U, B, V, R, and I bands. The effective wavelengths
of the instrumental system are close to the standard wavelengths of
the Johnson photometric system.
Objects:
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RA (2000) DE Designation(s)
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04 27 02.8 +25 42 22 DF Tau = HD 283654
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 153 77 DF Tau photometric and polarimetric UBVRI
observations at CAO
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See also:
J/A+AS/101/485 : Multisite UBVRI photometry in Tau-Aur cloud (Bouvier+ 1993)
J/A+A/327/145 : Photopolarimetric activity of RR Tauri (Rostopchina+ 1997)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d JD Julian date
13- 18 F6.3 mag Vmag Johnson V magnitude
20- 25 F6.3 mag U-B Johnson (U-B) color-index
27- 31 F5.3 mag B-V Johnson (B-V) color-index
33- 37 F5.3 mag V-R Johnson (V-R) color-index
39- 43 F5.3 mag V-I Johnson (V-I) color-index
45- 48 F4.2 % P(U) ? Degree of linear polarization in U band
50- 53 F4.2 % e_P(U) ? Accuracy of polarization degree in U band
55- 60 F6.2 deg PA(U) ? Position angle of polarization in U band
62- 65 F4.2 deg e_PA(U) ? Accuracy of position angle in U band
67- 70 F4.2 % P(B) ? Degree of linear polarization in B band
72- 75 F4.2 % e_P(B) ? Accuracy of polarization degree in B band
77- 82 F6.2 deg PA(B) ? Position angle of polarization in B band
84- 87 F4.2 deg e_PA(B) ? Accuracy of position angle in B band
89- 92 F4.2 % P(V) ? Degree of linear polarization in V band
94- 97 F4.2 % e_P(V) ? Accuracy of polarization degree in V band
99-104 F6.2 deg PA(V) ? Position angle of polarization in V band
106-109 F4.2 deg e_PA(V) ? Accuracy of position angle in V band
111-114 F4.2 % P(R) ? Degree of linear polarization in R band
116-119 F4.2 % e_P(R) ? Accuracy of polarization degree in R band
121-126 F6.2 deg PA(R) ? Position angle of polarization in R band
128-131 F4.2 deg e_PA(R) ? Accuracy of position angle in R band
133-136 F4.2 % P(I) ? Degree of linear polarization in I band
138-141 F4.2 % e_P(I) ? Accuracy of polarization degree in I band
143-148 F6.2 deg PA(I) ? Position angle of polarization in I band
150-153 F4.2 deg e_PA(I) ? Accuracy of position angle in I band
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Acknowledgements: Alla Rostopchina, arost(at)crao.crimea.ua
(End) Alla Rostopchina [CAO], Patricia Vannier [CDS] 21-Nov-2005