J/A+A/702/A234 Six new doubly eclipsing quadruples light curves (Zasche+, 2025)
Six new doubly eclipsing quadruples in 2+2 architecture.
Zasche P., Kucakova H., Kara J., Merc J., Henzl Z., Masek M., Cervinka L.,
Dienstbier V.
<Astron. Astrophys. 702, A234 (2025)>
=2025A&A...702A.234Z 2025A&A...702A.234Z (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry ; Optical
Keywords: stars: stars: binaries: eclipsing - stars: multiple -
stars: fundamental parameters
Abstract:
The study presents a confirmation of six quadruples with two sets of
eclipses that have the 2+2 architecture. These so-called doubly
eclipsing systems still present a quite rare group of stars. We
collected all available photometric data and carried out a detailed
analysis of them. In addition to the precise TESS photometry used to
model the light curves for both inner eclipsing binaries, photometric
survey data were also used, and more than 100 nights of our own
dedicated observations were carried out. These were mainly used for
the detection of the long-term evolution of orbital periods. Thanks to
these data, we were able to derive the mutual orbits of the inner
doubles via eclipse timing variations. The systems studied are:
CzeV1254 (periods 0.715348d+0.362593d, mutual period 15.6yr);
ASASSN-V J070838.27-171952.9 (4.300490d+3.767235d, 4yr); ASASSN-V
J091951.17-593306.9 (2.668674d+14.342218d, 0.95yr); WISE
J100820.07-731554.0 (0.368315d+7.945339d, 3.8yr); ASASSN-V
J143536.01-721459.4 (7.353842d+6.368567d, 27.4yr); and Corot
310284765 (1.875418d+2.371126d, 22.6yr). Some of the binaries
show significantly eccentric orbits. We also estimated their apsidal
motion periods. With our six new systems, the number of confirmed
orbits of 2+2 quadruples has been increased to 64 in total.
Description:
Photometry of 6 new doubly eclipsing quadruples in 2+2 architecture.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 53 6 List of studied stars
tablea1.dat 52 10003 Photometric data from ground-based telescopes
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- Star Name of the star
31- 32 I2 h RAh Simbad right ascension (J2000)
34- 35 I2 min RAm Simbad right ascension (J2000)
37- 41 F5.2 s RAs Simbad right ascension (J2000)
43 A1 --- DE- Simbad declination sign (J2000)
44- 45 I2 deg DEd Simbad declination (J2000)
47- 48 I2 arcmin DEm Simbad declination (J2000)
50- 53 F4.1 arcsec DEs Simbad declination (J2000)
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- Star Name of the star
30- 40 F11.5 d HJD Heliocentric Julian Date (HJD-2400000)
42- 47 F6.3 mag dmag Differential magnitude in Filter
49 A1 --- Filter [VRIC] Photometric filter used
51- 52 A2 --- Obs Observer/observatory
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Acknowledgements:
Petr Zasche, petr.zasche(at)email.cz
(End) Patricia Vannier [CDS] 22-Sep-2025