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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
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    We present 14.3 years of previously unpublished photometric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:
    ----------------------------------------------------------
       RA   (2000)   DE    Designation(s)
    ----------------------------------------------------------
    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
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

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


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

   Bytes Format Units   Label    Explanations

   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)

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



Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   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)

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
    1 = Hall, 1977AcA....27..281H
    2 = Landis et al., 1978AJ.....83..176L
    3 = Guinan et al., 1981PASP...93..495G
    4 = Sarma & Prakasa Rao, 1984JApA....5..159S
    5 = Mohin & Raveendran, 1989JApA...10...35M
    6 = Strassmeier et al., 1989ApJS...69..141S
    7 = Raveendran & Mohin, 1995A&A...301..788R
    8 = Padmakar & Pandey, 1996Ap&SS.235..337P


Acknowledgements:  V. Aarum Ulvas 

(End)                                          Patricia Bauer [CDS]  04-Mar-2003