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J/other/JAD/18.5    Long-term photometry of 11 RS CVn stars     (Heckert, 2012)
Two decades of optical photometry of short-period eclipsing RS CVn systems
and other active chromosphere systems.
    Heckert P.A.
   <J. Astron. Data, 18, 5-16 (2012)>
   =2012JAD....18....5H
ADC_Keywords: Stars, variable ; Photometry, UBVRI ; Binaries, eclipsing

Keywords: technique: photometric - stars: variable - stars: eclipsing -
          stars: RS CVn

Abstract:
    I present BVRI photometry of short-period (P<1d) eclipsing RS CVn
    binary star systems collected between 1988 and 2009 at Mount Laguna
    Observatory. Most of the data are for ER Vul and WY Cnc, with light
    curves nearly every year during that time period. I also present light
    curves for at least several years for XY UMa, BH Vir, CG Cyg, RT And,
    and UV Psc. I have fewer light curves for SV Cam, UV Leo, 1E1919+0427,
    and GSC 2038-0293. In addition to the eclipsing short-period systems,
    I also include UBVRI data for two longer period non-eclipsing RS CVn
    binary systems: UZ Lib and DM UMa, as well as two active chromosphere
    single stars: FK Com and HD 199178.

Description:
    I used the 0.6-m (24") telescope at Mount Laguna Observatory operated
    by San Diego State University for all the observations reported in
    this paper.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
stars.dat        103       11   List of studied stars
table3.dat        30    11948   WY Cancri photometry
table4.dat        30    13018   ER Vulpeculae photometry
table5.dat        30     5431   XY Ursa Majoris photometry
table6.dat        30     8137   BH Virginis photometry
table7.dat        30     9124   CG Cygni photometry
table8.dat        30     6424   RT Andromedae photometry
table9.dat        30     3680   UV Psc photometry
table10.dat       30     1104   SV Cam photometry
table11.dat       30      480   UV Leo photometry
table12.dat       30      948   GSC 2038-0293 photometry
table13.dat       30      746   1E1919+0427 photometry


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

   Bytes Format Units   Label     Explanations

   1- 15  A15   ---     Star      Star name
  17- 50  A34   ---     Years     Years of observations
  52- 64  A13   ---     Comp      Comparison star name
      65  A1    ---     n_Comp    [*] Note on Comp (1)
  66- 78  F13.5 d       T0        T0 used for phase (2)
  81- 91  F11.9 d       Per       Period used for phase (2)
  93-103  A11   ---     FileName  Name of the file with photometry

Note (1): For 1E1919+0427, the comparison star is Star A of Summers & Heckert,
           1997AJ....113.2242S, identified as 2MASS 19215198+0433384 by CDS.
Note (2): Phase=T0+Per*E.



Byte-by-byte Description of file: table*.dat

   Bytes Format Units   Label     Explanations

   1-  2  A2    ---     Band      [BVRIv 50] Observed band (1)
   5-  9  F5.3  ---     Phase     Phase
  11- 17  F7.4  mag     Dmag      Differential magnitude in Band
  19- 30  F12.4 d       HJD       ? Heliocentric Julian date

Note (1): BVRI in standard Johnson-Cousins system (except for WY Cnc 2009),
          v is the instrumental v band, and 50 is unexplained.
          observed with Mt Laguna Observatory 24" telescope.


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    10-Jul-2012