J/A+A/402/1033 BV photometry of UX Ari in 1987-2002 (Aarum Ulvas+, 2003)
BV photometry of UX Ari in the period 1987-2002.
Aarum Ulvas V., Henry G.W.
<Astron. Astrophys. 402, 1033 (2003)>
=2003A&A...402.1033A 2003A&A...402.1033A
ADC_Keywords: Binaries, spectroscopic ; Photometry, UBV ; Stars, late-type ;
Stars, variable
Keywords: stars: activity - binaries: spectroscopic -
stars: individual: UX Ari - stars: late-type - starspots
Abstract:
We present 14.3 years of previously unpublished photometric
observations of UX Ari. The observations were obtained between 1987.9
and 2002.2 using the T3 0.4-metre Automatic Photoelectric Telescope at
Fairborn Observatory and consist of 1228 B band and 1213 V band
measurements.
The comparison star was 62 Ari and the check star was 59 Ari.
We have analyzed the new data together with previously published
photometric observations. The V magnitude shows variations with
dominant periods of about 12 and 25 years, where the longest period
seems to correspond to an activity cycle. The previously reported
anticorrelation between the B V colour and V magnitude variations is
confirmed.
Objects:
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RA (2000) DE Designation(s)
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03 26 35.4 +28 42 54 UX Ari = HD 21242
03 22 11.9 +27 36 27 62 Ari = HD 20825
03 19 55.8 +27 04 16 59 Ari = HD 20618
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 36 1303 Individual B and V measurements of UX Ari
table3.dat 19 811 Previously published V measurements of UX Ari
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See also:
J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII. (Hartkopf+, 2000)
J/PASP/105/36 : All-sky uvby photometry of speckle binaries (Sowell+ 1993)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
14- 18 F5.3 mag B(v-c) ?=9.999 UX Ari differential B magnitude (1)
20- 24 F5.3 mag V(v-c) ?=9.999 UX Ari differential V magnitude (1)
26- 30 F5.3 mag B(ch-c) ?=9.999 Check star differential B magnitude (2)
32- 36 F5.3 mag V(ch-c) ?=9.999 Check star differential V magnitude (2)
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Note (1): Differential photometric measurements are in the sense UX Ari - 62 Ari
Note (2): Differential photometric measurements are in the sense 59 Ari - 62 Ari
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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- 11 F11.3 d HJD Heliocentric Julian Date
13- 17 F5.3 mag V(v-c) UX Ari differential V magnitude (1)
19 I1 --- ID [0/8] Numerical source identifier (2)
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Note (1): Differential photometric measurements are in the sense UX Ari - 62 Ari
Note (2): Numerical data source identifiers:
0 = Hall et al., 1975AcA....25..125H 1975AcA....25..125H
1 = Hall, 1977AcA....27..281H 1977AcA....27..281H
2 = Landis et al., 1978AJ.....83..176L 1978AJ.....83..176L
3 = Guinan et al., 1981PASP...93..495G 1981PASP...93..495G
4 = Sarma & Prakasa Rao, 1984JApA....5..159S 1984JApA....5..159S
5 = Mohin & Raveendran, 1989JApA...10...35M 1989JApA...10...35M
6 = Strassmeier et al., 1989ApJS...69..141S 1989ApJS...69..141S
7 = Raveendran & Mohin, 1995A&A...301..788R 1995A&A...301..788R
8 = Padmakar & Pandey, 1996Ap&SS.235..337P 1996Ap&SS.235..337P
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Acknowledgements: V. Aarum Ulvas
(End) Patricia Bauer [CDS] 04-Mar-2003