J/AJ/162/13 Parameters estimation for 173 eclipsing binaries (Li+, 2021)
Photometric study and absolute parameter estimation of six totally eclipsing
contact binaries.
Li K., Xia Q.-Q., Kim C.-H., Gao X., Hu S.-M., Guo D.-F., Gao D.-Y.,
Chen X., Guo Y.-N.
<Astron. J., 162, 13-13 (2021)>
=2021AJ....162...13L 2021AJ....162...13L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple; Stars, masses; Photometry, VRI;
Effective temperatures
Keywords: Close binary stars; Eclipsing binary stars; Stellar evolution
Fundamental parameters of stars
Abstract:
High precision CCD observations of six totally eclipsing contact
binaries were presented and analyzed. It is found that only one target
is an A-type contact binary (V429Cam), while the others are W-type
contact ones. By analyzing the times of light minima, we discovered
that two of them exhibit secular period increase while three manifest
long-term period decrease. For V1033Her, a cyclic variation
superimposed on the long-term increase was discovered. By comparing
the Gaia distances with those calculated by the absolute parameters of
173 contact binaries, we found that the Gaia distance can be applied
to estimate the absolute parameters for most contact binaries. The
absolute parameters of our six targets were estimated using their Gaia
distances. The evolutionary status of contact binaries was studied,
and we found that the A- and W-subtype contact binaries may have
different formation channels. The relationship between the
spectroscopic and photometric mass ratios for 101 contact binaries was
presented. It was discovered that the photometric mass ratios are in
good agreement with the spectroscopic ones for almost all of the
totally eclipsing systems, which is corresponding to the results
derived by Pribulla et al. and Terrell & Wilson.
Description:
We carried out observations on the six totally eclipsing contact
binaries using the Weihai Observatory 1.0m telescope of Shandong
University (WHOT), the 60cm Ningbo Bureau of Education and Xinjiang
Observatory Telescope (NEXT), and the 60cm telescope at the Xinglong
Station of National Astronomical Observatories (XL60).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 77 6 Information of the six targets
table7.dat 168 173 The 173 contact binaries with spectroscopic and
photometric observations
table9.dat 57 415 The eclipsing times of our six targets
refs7.dat 73 240 References used for table7
refs9.dat 105 45 References used for table9
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See also:
B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)
II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)
J/A+A/519/A78 : BVR light curves of KR Com (Zasche+, 2010)
J/A+A/525/A66 : 4 close binaries BVR light curves (Djurasevic+, 2011)
J/MNRAS/412/1787 : Physical parameters of 62 eclipsing binaries (Deb+, 2011)
J/AJ/148/126 : Light curves of four overcontact binaries (Caliskan+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/AJ/154/260 : 3 short-period eclipsing binaries BVRI photometry (Pi+, 2017)
J/other/RMxAA/53.235 : Photometry of 6 deep-contact W UMa (Kjurkchieva+, 2017)
J/AJ/157/111 : Study of three early-type contact twin binaries (Yang+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Stellar Name
11- 12 I2 h RAh [6/20] Hour of right ascension (J2000)
14- 15 I2 min RAm Minute of right ascension (J2000)
17- 21 F5.2 s RAs Second of right ascension (J2000)
23 A1 --- DE- [+] Sign of declination (J2000)
24- 25 I2 deg DEd [27/82] Degree of declination (J2000)
27- 28 I2 arcmin DEm Arcminute of declination (J2000)
30- 33 F4.1 arcsec DEs Arcsecond of declination (J2000)
35- 43 F9.7 d Per [0.26/0.45] Period
45- 50 F6.3 mag Vmax [11.39/13.8] Maximum V magnitude
52- 55 F4.2 --- Amp [0.43/0.61] Amplitude
57- 69 F13.5 d HJD [2458215/2458838] Heliocentric Julian Date
71- 77 A7 --- Ref References used (1)
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Note (1): References as follows:
1 = Hoffman+, 2009, J/AJ/138/466
2 = Shappee+, 2014, J/ApJ/788/48
3 = Jayasinghe+, 2018-2020, II/366
4 = Samus+, 2007-2017, B/gcvs
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 26 A26 --- Name Binary designation
28- 28 A1 --- Type Binnendijk 1970 subtype; A or W
30- 36 F7.5 d Prot [0.22/1.89] Orbital period
38- 42 F5.2 mag Vmax [4.73/12.51] Maximum V band magnitude
44- 48 F5.3 --- qsp [0.07/0.99] Spectroscopic derived mass ratio
50- 54 F5.3 --- qph [0.11/0.99]? Photometric derived mass ratio
56- 57 I2 deg i [20/90] Orbital inclination
59- 60 I2 % F [0/96]? Fillout factor
62- 66 I5 K Teff1 [4200/36000] Primary effective temperature
68- 72 I5 K Teff2 [169/34415] Secondary effective temperature
74- 78 F5.2 Rsun a [1.58/23.5] Semi-major axis
80- 84 F5.2 Msun Mass1 [0.61/27.9] Primary mass
86- 90 F5.2 Msun Mass2 [0.09/20.8] Secondary mass
92- 95 F4.2 Rsun Rad1 [0.71/9.7] Primary radius
97-100 F4.2 Rsun Rad2 [0.41/8.5] Secondary radius
102-110 F9.2 Lsun Lum1 [0.14/141906] Primary luminosity
112-119 F8.2 Lsun Lum2 [0.09/89950] Secondary luminosity
121-126 F6.3 mag AV [0.02/78.2] V band extinction
128-133 F6.3 mag BCV [-3.35/0.001] V band bolometric correction
135-138 I4 pc DistG [13/3074] Gaia distance from
Bailer-Jones+, 2018, I/347
140-143 I4 pc DistL [30/3800]? Literature distance
145-149 I5 pc Dist [0/17142] Distance from this work
151-168 A18 --- Ref Reference code(s)
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Binary designation
11- 20 F10.4 d BJD [51265/59033] Barycentric Julian Date; BJD-2400000
22- 28 F7.5 d e_BJD [0/005]? Uncertainty in BJD
30- 37 F8.1 --- Epoch [-27149/2377] Epoch
39- 45 F7.4 --- OC [-0.08/0.06] The O-C value
47- 54 F8.5 --- Res [-0.007/0.03] Residual of O-C fit
56- 57 I2 --- Ref Reference code(s)
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Byte-by-byte Description of file: refs7.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Ref [1/240] Reference code
5- 33 A29 --- Autor Autor
35- 53 A19 --- BIB BIBcode
55- 73 A19 --- Cat. Catalogue in Vizier
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Byte-by-byte Description of file: refs9.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref [1/45] Reference code
4- 21 A18 --- Autor Autor
23- 41 A19 --- BIB BIBcode
43- 62 A20 --- Cat. Catalogue in Vizier
64-105 A42 --- Note Additional note or comment
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 05-Nov-2021