J/other/OEJV/258 3 eclipsing binaries extrema with TESS data (Dzygunenko+, 2025)
Period analysis of 3 eclipsing binary stars with TESS data.
Dzygunenko A., Tvardovskyi D.
<Open European J. Var. stars, 258, 1 (2025)>
=2025OEJV..258....1D 2025OEJV..258....1D (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Stars, variable ; Ephemerides ; Photometry
Keywords: eclipsing binary stars - period analysis - O-C curve -
reflection effect
Abstract:
We studied three eclipsing binary systems: TIC 199716496, TIC
414764074, and TIC 435447013, using TESS space telescope photometric
data. We classified the first and the third stars as Algol-type
variables and the second star as W Ursae Majoris. We calculated the
periods and initial epochs for all three objects and later corrected
them using O-C curve analysis. Further investigation revealed a
significant reflection effect in TIC 435447013, and possible star
spots in TIC 414764074. Moreover, TIC 199716496 appeared to have
strange semiregular period changes. These findings enhance our
understanding of binary systems despite raising even more questions
about the nature of observed features of variable stars.
Description:
This dataset provides precise timing measurements (moments of minima
and maxima) for three eclipsing binary stars: TIC 199716496, TIC
414764074, and TIC 435447013, as observed by the TESS space telescope.
The table includes Julian Dates (JD) of each extremum, classified as
either primary (P) or secondary (S) minima/maxima, along with their
associated errors (Delta_JD). These values are crucial for O-C diagram
construction and period analysis, enabling the study of orbital and
physical changes in these systems, including phenomena such as
reflection effects and potential starspots.
Objects:
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RA (2000) DE Designation(s)
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16 57 33.87 +59 31 51.8 TIC 199716496 = 2MASS J16573387+5931519
00 30 20.74 +16 35 15.0 TIC 414764074 = 2MASS J00302073+1635149
23 08 06.64 +65 36 33.0 TIC 435447013 = 2MASS J23080654+6536325
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
extrema.dat 41 2475 JD moments of minima and maxima for the three
eclipsing binaries (TIC 199716496,
TIC 414764074 and TIC 435447013)
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Byte-by-byte Description of file: extrema.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- TIC Target ID for each eclipsing binary star
11- 15 A5 --- Extrema [min max P S] Extremum type
('Min' for minimum, 'Max' for maximum,
'P' for primary, 'S' for secondary)
17- 29 F13.8 d JD Julian Date of the extremum
31- 41 F11.9 d e_JD Error in the Julian Date of the extremum
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Acknowledgements:
Andriy Dzygunenko, andridzigunenko(at)gmail.com
We acknowledge the TESS mission team for the photometric data and the
Mikulski Archive for Space Telescopes (MAST) for providing the data.
Special thanks to Kateryna Andrych and Dr. Ivan Andronov for MAVKA
software, and to Dr. Olena Shubina for helpful discussions.
References:
Andrych, K.D., Andronov, I.L., & Chinarova, L.L. (2020),
Journal of Physical Studies, 24(1), id. 1902.
Devor, J., Charbonneau, D., O'Donovan, F.T., Mandushev, G., & Torres, G.
2008AJ....135..850D 2008AJ....135..850D, Cat. J/AJ/135/850
Sterken, C. (2005), ASPC, 335, 3.
(End) Patricia Vannier [CDS] 14-Oct-2024