J/A+A/544/L3 Photometry of the double eclipsing binary CzeV343 (Cagas+, 2012)
Discovery of a double eclipsing binary with periods near a 3:2 ratio.
Cagas P., Pejcha O.
<Astron. Astrophys. 544, L3 (2012)>
=2012A&A...544L...3C 2012A&A...544L...3C
ADC_Keywords: Binaries, eclipsing ; Photometry
Keywords: binaries: close - binaries: eclipsing
Abstract:
We present the discovery of a possible new quadruple system composed
of two unresolved eclipsing binaries (EBs), CzeV343 (V∼13.5mag). We
obtained photometric observations of CzeV343 that completely cover the
two orbital periods and we successfully model the light curves as the
sum of two detached EBs. The two orbital periods, 1.20937 and
0.80693-days, are within 0.1% of a 3:2 ratio. We speculate that this
might be the result of Kozai cycles and tidal friction evolution of
quadruple systems.
Description:
Differential photometric measurements of CzeV343 obtained with 0.25m
Newtonian telescope with G4-16000 and G2-3200 CCD cameras are
presented. The photometry is mostly without any photometric filter,
although some measurements in V and I were obtained as well. For each
measurement, we give Julian date, differential magnitude with respect
to a comparison star, photometric error and modeled magnitude.
Objects:
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RA (2000) DE Designation(s)
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05 48 24.008 +30 57 03.64 CzeV343 = GSC 02405-01886
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 46 833 Photometric measurements of CzeV343
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d BJD Barycentric Julian Date in barycentric
dynamical time
17- 22 F6.4 mag dmag Differential magnitude
25- 30 F6.4 mag e_dmag Magnitude uncertainty
32- 33 I2 --- DN Dataset number
36 I1 --- Filter [0/2] Photometric filter (1)
40- 46 F7.5 mag Mod Modeled magnitude
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Note (1): Filter code as follows:
0 = no filter (sensitive from 350 to 1000nm, maximum at 550nm)
1 = Cousins I band
2 = Johnson V band
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Acknowledgements:
Ondrej Pejcha, pejcha(at)astronomy.ohio-state.edu
(End) Ondrej Pejcha [Ohio State Univ., USA], Patricia Vannier [CDS] 21-Jun-2012