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 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:
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RA (2000) DE Designation(s)
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13 32 03.4 +28 35 05 VZ CVn = HD 117777
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 17 232 The new times of minima for VZ CVn
refs.dat 90 47 References
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d JD Julian date on minimum
16- 17 I2 --- r_JD Reference for JD
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 40 A17 --- Aut Author's name
42- 90 A49 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 06-Aug-2007