J/ApJ/927/183 Times of light minima for V410 Aur (Liao+, 2022)
A single-lined spectroscopic binary companion to an active and deep contact
binary in a quintuple stellar system.
Liao W.-P., Qian S.-B., Shi X.-D., Li L.-J., Liu N.-P., He J.-J., Zang L.,
Li P.
<Astrophys. J., 927, 183 (2022)>
=2022ApJ...927..183L 2022ApJ...927..183L
ADC_Keywords: Binaries, eclipsing; Binaries, spectroscopic; Stars, variable;
References
Keywords: Eclipsing binary stars ; Close binary stars
Abstract:
V410 Aur is a known deep and low-mass-ratio contact binary with a
spectroscopically tertiary component and a visual companion. However,
the physical and orbital properties of the tertiary are unknown. We
constructed (O-C) curve with 117 new eclipse times and those collected
from the literature, which shows a cyclical variation with a period of
25.44(±1.17)yr and a projected semimajor axis of 0.0348(±0.0021)d
while it undergoes a long-term period decrease at a rate of
dP/dt=-1.58x10-7d/yr. The cyclical variation is analyzed for the
light-travel time effect. The minimum mass of the third body is
determined as 1.39(±0.13)M☉ that is much larger than the
inferred value (0.97M☉) of spectroscopic investigation, which
indicates that the spectroscopically tertiary is a single-lined
spectroscopic binary with an unseen component. The maximum orbital
semimajor axis 6.19(±0.67)au of the third body is determined. Gaia
detected a visual companion to V410 Aur at practically the same
distance from the Sun nicely confirming the physical bond. These
results reveal that V410 Aur contains a single-lined spectroscopic
binary with a visual companion in a quintuple stellar system. TESS
photometric solutions confirmed that V410 Aur is a deep overcontact
binary with a fill-out factor of 73.83(88)% where the additional light
contribution is about 24.80(18)%. The continuous variations of light
curves are explained by the evolution of a dark spot on the more
massive component. The parabolic variation in the (O-C) curve may be
caused by the mass transfer from the massive component to the less
massive one in the deep overcontact binary.
Description:
CCD observations of V410 Aur have been carried out since 2006 by using
the 1m and 60cm Cassegrain reflecting telescopes at Yunnan
Observatories (YNOs; YNO-1m and YNO-60).
We also monitored V410 Aur by using the 70cm telescope that was built
in 2015 based on the cooperation between YNOs and the National
Astronomical Research Institute of Thailand (NARIT), which is located
at Lijiang Gaomeigu station of YNOs (LJ-70).
Sixteen new eclipse times were obtained and are listed in Table 2
(therein Reference 16).
In order to determine stellar atmospheric parameters of V410 Aur, the
spectra observations were performed on 2021 February 7 and October 20
by using the Beijing Faint Object Spectrograph and Camera (BFOSC)
mounted on the 2.16m telescope in Xinglong station of National
Astronomical Observatories, Chinese Academy of Sciences. See Section 2.2.
Objects:
----------------------------------------------------------
RA (ICRS) DE Designation(s)
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05 01 10.83 +34 30 26.5 V410 Aur = TYC 2396-533-1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 30 256 A total of 256 times of light minima for V410 Aur
refs.dat 167 42 References
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See also:
II/150 : Parameters of eclipsing binaries (Brancewicz+, 1980)
III/218 : ELODIE archive (Prugniel+, 2001)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
IV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
I/358 : Gaia DR3 Part 4. Variability (Gaia Collaboration, 2022)
J/A+AS/124/75 : Multiple star catalogue (MSC) (Tokovinin 1997-1999)
J/AJ/130/767 : Radial velocity studies of close binary stars (Rucinski+, 2005)
J/AJ/130/2252 : VRI photometry of V410 Aur (Yang+, 2005)
J/AJ/131/2986 : Multiplicity of contact binaries (Pribulla+, 2006)
J/AJ/132/769 : Radial velocities of 10 close binaries (Pribulla+, 2006)
J/AJ/133/1977 : Radial velocities of 10 close binaries (Pribulla+, 2007)
J/AJ/134/2353 : Observations of contact binaries (Rucinski+, 2007)
J/AJ/136/586 : Radial velocities of 10 close binaries (Rucinski+, 2008)
J/AJ/137/3655 : Radial velocities of 8 close binaries (Pribulla+, 2009)
J/AJ/137/3646 : Radial velocities of 10 close binaries (Pribulla+, 2009)
J/MNRAS/405/1930 : Period changes of EA-, EB- & EW-types binaries (Liao+, 2010)
J/AJ/146/79 : Differential BVRI light curves of EP And (Liao+, 2013)
J/AJ/145/39 : Differential BV(RI)c light curves of PY Vir (Zhu+, 2013)
J/AJ/157/207 : BVRcIc light curve observations for VZ Lib (Liao+, 2019)
J/MNRAS/488/4905 : SuperWASP transit false positive catalog (Schanche+, 2019)
J/AJ/162/13 : Parameters estimation for 173 eclipsing binaries (Li+, 2021)
J/AJ/161/46 : (O-C) curve of the binary system KIC 06852488 (Shi+, 2021)
http://kws.cetus-net.org/ : Kamogata Wide-field Survey home page
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.5 d HJD [48500.17/59470.4] Heliocentric Julian Date;
HJD-2400000
13- 19 F7.5 d e_HJD [9e-05/0.007] Uncertainty
20 A1 --- feHJD [*] Flag on e_HJD (1)
22- 24 A3 --- Meth Method ("CCD" or "Pe")
26- 30 A5 --- Ref Reference (see refs.dat file)
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Note (1): Flag as follows:
* = An average value of other errors was assigned to the minima those
are not given errors in the literature.
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Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Ref Reference code
7- 25 A19 --- Bibcode Bibcode of the reference
27- 44 A18 --- Auth First author's name(s)
46-164 A119 --- Comm Comment
166-167 A2 --- f_Auth Flag on Author (1)
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Note (1): Flag as follows:
** = The name of the observer was taken from the O-C gateway created
by Drs.Anton Paschke (database administrator) and Bc.Lubos Brat
(WEB/SQL programator) at the website http://var2.astro.cz/ocgate/
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 18-Jan-2024