J/A+A/683/A158 Six new triple stellar systems time of minima (Zasche+, 2024)
Six new eccentric eclipsing systems with a third body.
Zasche P., Henzl Z., Wolf M.
<Astron. Astrophys. 683, A158 (2024)>
=2024A&A...683A.158Z 2024A&A...683A.158Z (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Binaries, orbits ; Optical
Keywords: binaries: close - binaries: eclipsing - stars: fundamental parameters
Abstract:
We present the discovery of six new triple stellar system candidates
composed of an inner eccentric-orbit eclipsing binary with an apsidal
motion. These stars were studied using new, precise TESS light curves
and a long-term collection of older photometric ground-based data.
These data were used for the monitoring of ETVs (eclipse timing
variations) and to detect the slow apsidal movements along with
additional periodic signals. The systems analysed were ASASSN-V
J012214.37+643943.3 (orbital period 2.01156d, eccentricity 0.15, third
body with 3.3yr period); ASASSN-V J052227.78+345257.6 (2.42673d, 0.35,
3.2yr); ASASSN-V J203158.98+410731.4 (2.53109d, 0.20, 2.7yr); ASASSN-V
J230945.10+605349.3 (2.08957d, 0.18, 2.3yr); ASASSN-V
J231028.27+590841.8 (2.41767d, 0.43, 4.9yr); and NSV 14698 (3.30047d,
0.147, 0.5yr). In the system ASASSNV J230945.10+605349.3, we detected
a second eclipsing pair (per 2.99252d) and found adequate ETV for the
pair B, proving its 2+2 bound quadruple nature. All of these detected
systems deserve special attention from long-term studies for their
three-body dynamics since their outer orbital periods are not too long
and because some dynamical effects should be detectable during the
next decades. The system NSV 14698 especially seems to be the most
interesting from the dynamical point of view due to it having the
shortest outer period of the systems we studied, its fast apsidal
motion, and its possible orbital changes during the whole 20th
century.
Description:
Time of minima of the six new triple stellar system candidates.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 107 6 List of new eccentric triple candidates
minima.dat 78 919 Time of minima
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See also:
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (J2000)
4- 5 I2 min RAm Right ascension (J2000)
7- 10 F4.1 s RAs Right ascension (J2000)
12 A1 --- DE- Declination sign (J2000)
13- 14 I2 deg DEd Declination (J2000)
16- 17 I2 arcmin DEm Declination (J2000)
19- 22 F4.1 arcsec DEs Declination (J2000)
24- 51 A28 --- Name VSX target name
53- 55 A3 --- --- [TIC]
57- 65 I9 --- TIC TIC identification number
67- 72 F6.3 mag Tmag TESS magnitude
74- 78 F5.3 mas plx Gaia parallax
80- 84 F5.3 mas e_plx Gaia parallax error
86-105 A20 --- Info Spectral/temperature information
107 A1 --- r_Info [ab ] Reference for spectral type (1)
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Note (1): References for spectral type as follows:
a = taken from Berlanas et al. (2018A&A...612A..50B 2018A&A...612A..50B, Cat. J/A+A/612/A50)
b = Brodskaya (1953IzKry..10..104B 1953IzKry..10..104B)
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Byte-by-byte Description of file: minima.dat
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Bytes Format Units Label Explanations
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1- 30 A30 --- Name Name of the star
32- 45 F14.6 d HJD Heliocentric Julian Date of eclipse
48- 55 F8.6 d e_HJD Error of HJD
58- 78 A21 --- Obs Source/Reference/Observer
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Acknowledgements:
Petr Zasche, petr.zasche(at)email.cz
(End) Patricia Vannier [CDS] 26-Jan-2024