J/other/JAD/13.2 UU Cnc UBVRI differential photometry (Kalv+, 2007)
Observations of UU Cancri.
Kalv P., Oja T., Harvig V.
<Journal Astronom. Data, 13, 2 (2007)>
=2007JAD....13....2K 2007JAD....13....2K
ADC_Keywords: Stars, double and multiple ; Photometry, UBVRI
Keywords: UU Cancri - Photometry - binaries
Abstract:
We present UBVR photometric observations of the 96-day binary system
UU Cancri (K4 III) obtained in 1972-1994. A relatively large scatter
in the orbital light curves turned out to be intrinsic with a
modulating cycle lasting at least 8000 days. Using all available
archived photographic and visual observations covering nearly 100
years, we find the orbital period of the system to be constant. This
fact, together with the pattern of the colour curves, makes the
existence of a powerful accretion disk in the system improbable.
Description:
UU Cancri was observed with the Tallinn 50-cm telescope (BV from 1972,
UBVR from 1980), the Kvistaberg 40-cm telescope (UBV from 1985), the
60-cm telescope of the Royal Swedish Academy of Sciences at
Observatorio Astrofisico del Roque de los Muchachos, La Palma Canary
Islands (UBV from 1991) and 2.5-m Nordic Optical Telescope (UBVRI on
seven nights from 1990). Up to 1994 in total 234 observations (one
normal point per night) have been obtained.
Objects:
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RA (2000) DE Designation(s)
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08 02 30.9 +15 10 42 UU Cancri = HIP 39341
08 01 59.2 +15 40 04 SAO 97490 = BD+16 1614
08 01 54.7 +15 33 47 SAO 97489 = BD+15 1731
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 32 94 Times of normal minima of UU Cancri
table5.dat 47 234 Differential magnitudes of UU Cancri
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 F10.2 d JD Julian date
13- 15 F3.1 --- me ?=- Mean error on Julian Date
17- 21 F5.1 d E Time of normal minima
23- 27 F5.2 mag O-C Observed minus computed magnitude
29- 33 A5 --- Obs Observers (1)
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Note (1): Observers code as follows:
B = Beyer (1964, Mitt. Hamburg. Sternw. Bergedorf, No.122, 87)
Br = Brelstaff (1985)
E = Eggen (1973PASP...85...42E 1973PASP...85...42E)
EHH = Eaton, Hall & Honeycutt (1991ApJ...376..289E 1991ApJ...376..289E)
H = Huth (1963, Mitt. Verand. Sterne, No. 744-745)
I = Isles (1986, BAAVS Circ., No. 63, 19)
KCL = Kim, Chun & Lee (1988, Vistas in Astron., 31, 343)
KO = this paper
L = Lause (1938AN....266..237L 1938AN....266..237L)
S = Schachowskoi (1956, Bull. AO Stalinabad, No.17, 35)
T = Taylor (1984, BAAVS Circ., No. 58, 11;
1985, BAAVS Circ., No. 60, 19)
WZ = Winiarski & Zola (1987AcA....37..375W 1987AcA....37..375W)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d JD Julian date
14- 19 F6.3 mag dUmag ? Differential U magnitude
21- 26 F6.3 mag dBmag ? Differential B magnitude
28- 33 F6.3 mag dVmag ? Differential V magnitude
35- 40 F6.3 mag dRmag ? Differential R magnitude
42- 47 F6.3 mag dImag ? Differential I magnitude
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Acknowledgements:
L.M. Freyham, lfreyham(at)gmail.com
(End) L.M. Freyhammer [Vrije Univ. Brussel], Patricia Vannier [CDS] 23-Feb-2010