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J/A+AS/125/11     UBV & V(RI)c photometry of 23 active stars (Strassmeier+ 1997)
Starspot photometry with robotic telescopes.
Continuous UBV and V(RI)c photometry of 23 stars in 1991-1996
    Strassmeier K.G., Bartus J., Cutispoto G., Rodono M.
   <Astron. Astrophys. Suppl. Ser. 125, 11 (1997)>
   =1997A&AS..125...11S      (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, UBV ; Photometry, VRI

Keywords: stars: activity - stars: late-type - stars: rotation -
          binaries: spectroscopic - techniques: photometric

Description:
    We report on the progress of our ongoing photometric monitoring
    program of spotted late-type stars with automatic photoelectric
    telescopes (APTs) on Mt. Hopkins in Arizona and on Mt. Etna in Sicily.
    We present 9250 differential UBV and/or V(RI)c observations for
    altogether 23 chromospherically active stars, singles and binaries,
    pre-main-sequence and post-main-sequence, taken between 1991 and 1996.
    For a description of the UBV and (RI)c photometric system, see e.g.
    GCPD/01 and GCPD/54
Objects:
    ----------------------------------------------------------
       RA   (2000)   DE    Designation(s)
    ----------------------------------------------------------
    02 03 47.2 +35 35 29   HD 12545
    02 48 42.8 +31 07 03   VY Ari = HD 17433
    04 09 40.6 -07 53 39   EI Eri = HD 26337
    04 18 29   +28 28.0    V410 Tau = HD 283518
    04 36 47.3 +27 08 04   V833 Tau = HD 283750
    04 55 59.3 +30 34 03   SU Aur = HD 282624
    04 58 17.4 +00 27 16   HD 31738
    05 00 08.1 +03 17 13   HD 31993
    05 52 16.0 -28 39 24   HD 39576
    09 24 49.0 -23 49 33   IL Hya = HD 81410
    09 32 26.3 -11 11 06   LQ Hya = HD 82558
    09 32 44.2 +26 59 31   HD 82443
    12 13 20.7 -09 04 46   HD 106225
    12 51 41.9 +27 32 27   31 Com = HD 111812
    12 55 33.8 +25 53 30   IN Com = HD 112313
    13 06 25.9 -04 50 44   HD 113816
    13 24 23.9 -02 18 48   IN Vir = HD 116544
    13 30 46.9 +24 13 59   FK Com = HD 117555
    14 39 01.1 +64 17 33   HD 129333
    15 32 22.8 -08 32 04   UZ Lib = BD-08 3999
    20 29 36.8 -21 07 35   HD 195040
    21 14 31.1 -30 45 25   HD 202077
    22 53 02.2 +16 50 29   IM Peg = HD 216489
    22 54 35.5 +16 56 31   HR 8714 = HD 216672
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
cata1             51       48   Catania APT UBV photometry
ei_eri.ph         51      217   Phoenix APT UBV photometry when operated under
                                  Vienna budget
cata2             50      666  *APT differential UBV photometry
phoenix           71     1576  *Phoenix APT UBV photometry
vienna            72     6664   Vienna T7 APT V(RI)c differential photometry
hr8714.t7         48      208   Vienna T7 APT V(RI)c photometry

Note on cata2:  All data were obtained with Catania APT except for HD 106225
  which were obtained with Phoenix APT when operated under Catania budget.
Note on phoenix: All data were obtained when operated under Vienna budget
  except for EI Eri, which were obtained when operated under Catania budget.


See also:
    V/76 : Chromospherically Active Binaries (Strassmeier+ 1993)


Byte-by-byte Description of file: cata1 ei_eri.ph

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     Name      Star name
  11- 23  F13.5 d       HJD       Heliocentric Julian day
  24- 28  F5.4  ---     Phase     [0/1[ Phase
  31- 35  F5.3  mag     Vmag      V magnitude
  38- 43  F6.3  mag     U-B       ?=99.99 U-B color index
  46- 51  F6.3  mag     B-V       ?=99.99 B-V color index


Byte-by-byte Description of file: cata2

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     Name      Star name
  11- 23  F13.5 d       HJD       Heliocentric Julian day
  24- 28  F5.4  ---     Phase     [0/1[ Phase
  30- 35  F6.3  mag     dUmag     ?=99.99 Differential U magnitude
  37- 42  F6.3  mag     dBmag     ?=99.99 Differential B magnitude
  45- 50  F6.3  mag     dVmag     ?=99.99 Differential V magnitude


Byte-by-byte Description of file: phoenix

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     Name      Star name
  11- 23  F13.5 d       HJD       Heliocentric Julian day
  25- 31  F7.4  mag     dUmag     ?=99.999 Differential U magnitude
  33- 39  F7.4  mag     dBmag     ?=99.999 Differential B magnitude
  41- 47  F7.4  mag     dVmag     ?=99.999 Differential V magnitude
  49- 55  F7.4  mag     e_dUmag   ?=99.999 rms uncertainty on dUmag
  57- 63  F7.4  mag     e_dBmag   ?=99.999 rms uncertainty on dBmag
  65- 71  F7.4  mag     e_dVmag   ?=99.999 rms uncertainty on dVmag


Byte-by-byte Description of file: vienna

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     Name      Star name
  11- 23  F13.5 ---     d         HJD Heliocentric Julian day
  25- 31  F7.4  mag     dVmag     Differential V magnitude
  33- 39  F7.4  mag     dRc       Differential Cousins R magnitude
  41- 48  F8.4  mag     dIc       Differential Cousins I magnitude
  50- 56  F7.4  mag     e_dVmag   rms uncertainty on dVmag
  58- 64  F7.4  mag     e_dRc     rms uncertainty on dV-R
  66- 72  F7.4  mag     e_dIc     rms uncertainty on dR-I


Byte-by-byte Description of file: hr8714.t7

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     Name      Star name
  11- 23  F13.5 ---     d         HJD Heliocentric Julian day
  25- 31  F7.4  mag     Vmag      V magnitude
  33- 39  F7.4  mag     V-Ic      V-Ic colour index
  41- 48  F8.4  mag     V-Rc      V-Rc colour index


Acknowledgements: Klaus G. Strassmeier 

(End)                                         Patricia Bauer [CDS]   10-Jan-1997