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J/MNRAS/376/573     New times of minima of VZ CVn            (Ibanoglu+, 2007)
VZ CVn: a close binary system with γ Doradus-like variations.
    Ibanoglu C., Tas G., Sipahi E., Evren S.
   <Mon. Not. R. Astron. Soc., 376, 573-579 (2007)>
   =2007MNRAS.376..573I
ADC_Keywords: Binaries, eclipsing ; Ephemerides

Keywords: binaries: eclipsing - stars: individual: VZ CVn - stars: oscillations


Abstract:
    We present new photometric two-colour observations of the double-lined
    close binary star VZ CVn. Combining two data sets obtained in 1971-72
    and in 2006, the physical parameters of both components were derived.
    After removing the light variations due to the eclipses and proximity
    effects, a periodic variation in the more massive component with a
    dominant period of 1.06876d could be detected in the first photometric
    data set. In accordance with its position on the Hertzsprung-Russell
    diagram and both its pulsation period and pulsation constant of 0.62d,
    the primary component of VZ CVn should be an excellent γ Doradus
    candidate. The less massive secondary component seems to have smaller
    radius with respect to its mass. Both components appear to have lower
    luminosities with respect to their masses; hence, their radiative
    properties seem to be different. The evolutionary status of the
    components is also discussed.

Description:
    The photometric observations were obtained between 2006 May 02 and 30
    with the 35-cm MEADE telescope at Ege University Observatory.
Objects:
    ----------------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ----------------------------------------------------------
    13 32 03.4   +28 35 05   VZ CVn = HD 117777
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table4.dat        17      232   The new times of minima for VZ CVn
refs.dat          90       47   References


Byte-by-byte Description of file: table4.dat

   Bytes Format Units   Label     Explanations

   1- 13  F13.5 d       JD        Julian date on minimum
  16- 17  I2    ---     r_JD      Reference for JD


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

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Ref       Reference number
   4- 22  A19   ---     BibCode   BibCode
  24- 40  A17   ---     Aut       Author's name
  42- 90  A49   ---     Com       Comments


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    06-Aug-2007