J/AcA/74/27 KZ Vir time of minima (Gruesoytrak-Mutlay+, 2024)
A Puzzling Eclipsing Binary: KZ Virginis.
Gruesoytrak-Mutlay S.H., Guerol B.
<Acta Astron. 74, 27 (2024)>
=2024AcA....74...27G 2024AcA....74...27G (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry ; Optical
Keywords: binaries: eclipsing - stars: fundamental parameters -
stars: individual: KZ Vir - methods: data analysis
Abstract:
We present Transiting Exoplanet Survey Satellite (TESS) light curve
analysis of KZ Vir. The TESS observations of KZ Vir were published in
a total of three Sectors. TESS observations show some features that
could not be observed with ground-based telescopes before. We refined
the light elements of the system by using the times of minima found in
the literature and the times observed with TESS. The TESS light curve
was analyzed with the Wilson-Devinney code including geometric and
physical parameters of the components obtained using published radial
velocity data. We confirmed for the first time that the system is
essentially a detached type eclipsing binary and obtained masses and
radii of the primary and the secondary components:
M1=1.596±0.022M☉ , M2=1.319±0.019M☉ and
R1=2.271±0.011R☉, R2=1.603±0.008R☉ , respectively. We
find that the components of KZ Vir are located above or on the TAMS.
Description:
The observations of KZ Vir were made by the Transiting Exoplanet
Survey Satellite (TESS) at three sectors (23, 46 and 50). Each sector
has ∼27.4d of observations with nearly 2 min (SC: Short Cadence)
exposure time.
A total of 48206 observations of the system were obtained in
approximately 763d.
Objects:
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RA (2000) DE Designation(s)
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13 12 22.87 +02 39 13.7 KZ Vir = TIC 366786599
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 34 124 *The eclipse times of the KZ Vir system
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Note on table1.dat: We excluded the minimum times obtained by Hipparcos data.
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- No Sequential number
4- 6 A3 --- n_No Note (1)
10- 15 A6 --- Type Type of minima (Min I or Min II)
17- 26 F10.5 d BJD Barycentric Julian day (BJD-2450000)
28- 34 F7.5 d e_BJD rms uncertainty on BJD
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Note (1): Note as follows:
* = Krajci (2005IBVS.5592....1K 2005IBVS.5592....1K, Cat. J/other/IBVS/5592)
** = Liakos and Niarchos (2011IBVS.5990....1L 2011IBVS.5990....1L)
*** = Cagas (2013OEJV..160....1C 2013OEJV..160....1C)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Aug-2025