Access to Astronomical Catalogues

J/other/JAD/17.1    1961-1999 UBV photometry of 14 variables        (Oja, 2011)
Photoelectric UBV photometry of variable stars observed during the years
1961-1999.
    Oja T.
   <J. Astron. Data, 17, 1 (2011)>
   =2011JAD....17....1O
ADC_Keywords: Stars, variable ; Photometry, UBV

Keywords: technique: photometric - stars: variable


Abstract:
    Photoelectric UBV photometry of the variable stars V636 Cas,
    alpha UMi, V440 Per, zeta Gem, UU Cnc, TYC2-880-515-1, V473 Lyr,
    chi Cyg, V1794 Cyg, DT Cyg, V1334 Cyg, V532 Cyg, pi Aqr, and DY Peg
    is reported.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        61       14   The variable stars
table3.dat        61      448   UBV measurements of V636 Cas = HD 620274
table4.dat        61      233   UBV measurements of alpha UMi = HR 424
table5.dat        61      719   UBV measurements of V440 Per = HR 690
table6.dat        61      955   UBV measurements of zeta Gem = HR 2650
table7.dat        61      214   UBV measurements of UU Cnc = BD+15 1733
table8.dat        61       28   UBV measurements of TYC2-880-515-1 = Anon
table9.dat        61     1141   UBV measurements of V473 Lyr = HR 7308
table10.dat       61       71   UBV measurements of chi Cyg = HR 7564
table11.dat       61      457   UBV measurements of V1794 Cyg = BD+43 3759
table12.dat       61       44   UBV measurements of DT Cyg = BD+30 4318
table13.dat       61      716   UBV measurements of V1334 Cyg = HR 8157
table14.dat       61       31   UBV measurements of V532 Cyg = BD 443779
table15.dat       61       60   UBV measurements of pi Aqr = HR 8539
table16.dat       61       93   UBV measurements of DY Peg = BD+16 3877


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1- 14  A14   ---     Name      Star name
  17- 21  A5    ---     VType     Variable type
  23- 24  I2    h       RAh       Right ascension (J2000)
  26- 29  F4.1  min     RAm       Right ascension (J2000)
      31  A1    ---     DE-       Declination sign (J2000)
  32- 33  I2    deg     DEd       Declination (J2000)
  35- 36  I2    arcmin  DEm       Declination (J2000)
  38- 43  A6    ---     ID        Identification number of the star
  45- 55  A11   ---     Tab       Name of the table with UBV photometry
  57- 61  I5    d       DT        ? Time interval between first and last observation


Byte-by-byte Description of file: table[3456789].dat table1?.dat

   Bytes Format Units   Label     Explanations

   1-  6  A6    ---     ID        Identification number of the star (1)
   8- 17  A10 "YYYY/MM/DD" Date   Observation date
  19- 23  F5.2  h       theta     ? Local sideral time in hours and decimals
                                    of hour of mid-observation
  25- 30  F6.3  mag     Vmag      ? V magnitude
  33- 37  F5.3  mag     B-V       B-V colour index
  38- 43  F6.3  mag     U-B       ? U-B colour index
  46- 55  F10.4 d       JD        HJD-2400000 at mid-observation
      57  A1    ---     Inst      [EKLNSU] Instrument used (2)
  59- 61  A3    ---     R         Remark (3)

Note (1): Some tables contains also photometry of comparison stars

Note (2): Instruments code as follows:
  E = Observations made with single-channel UBV photometers at the 50-cm Danish
      Cassegrain telescope or the ESO 50-cm Cassegrain telescope at the
      European Southern Observatory. The magnitudes and colour indices were
      reduced to the UBV system by means of the best values of the southern
      E-region standard stars available at the time. One observation of z Gem
      with each instrument is included here.
  K = A single-channel UBV photometer attached to the 40-cm Cassegrain telescope
      at the Kvistaberg Observatory, the northern observing station of the
      Uppsala Observatory. The observations were reduced to the UBV system by
      means of the standard stars published by Oja (1996BaltA...5..103O).
  L = Measurementsmade with the Swedish Academy of Sciences 60-cm Cassegrain
      telescope located at El Observatorio del Roque de los Muchachos on La
      Palma, belonging to El Instituto de Astrofisica de Canarias. During the
      1988 observations a UBV photometer, constructed at the Stockholm
      Observatory, using a rotating filter-wheel was utilized. The wheel
      stopped at every pre-selected filter position during an interval of time
      approximately inversely proportional to the count rate in that position.
      In 1991-1995 the telescope was equipped with another single-channel UBV
      photometer, also built at the Stockholm Observatory. All measurements
      have been reduced to the UBV system by means of the standard stars
      published by Oja (1996BaltA...5..103O).
  N = Measurements made with the Turku Observatory simultaneous five-colour
      photo-polarimeter at the 2.5-m Nordic Optical telescope located at El
      Observatorio del Roque de los Muchachos on La Palma. Only one measurement
      of UU Cnc (together with its standards) is included here.
  S = A simultaneous UBV three-colour photometer used with the 1-m
      Schmidt-Cassegrain telescope at the Kvistaberg Observatory. All
      observations were reduced to the UBV system by means of the standard
      stars listed by Oja (1996BaltA...5..103O).
  U = A single-channel BV photometer attached to the 33-cm photographic tube of
      the Uppsala double refractor. The observations, originally reduced by the
      standard values given by Haggkvist and Oja (1969ArA.....5..303H), were
      reduced to the BV system by correcting the original results by DV=-0.003,
      D(B-V)=+0.005, the corrections having been derived from a comparison of
      the list mentioned above and that published by Oja (1996BaltA...5..103O).
      Only a UMi and z Gem were measured with the Uppsala refractor.
Note (3): Remarks as follows:
   R  = differential measurement, referred to the local standard(s) only
   RV = the magnitude V has been referred to the local standard(s) only
   U  = the whole measurement is more uncertain than normal measurements,
         generally due to weather problems, sometimes aurora borealis
   UV = the magnitude V is more uncertain than usual (weather problems)
   UU = the U-B colour index is more uncertain than usual, generally because
         of faint U and/or bright sky


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    13-Dec-2011