J/other/NewA/48.42 AQ Boo VRI differential light curves (Wang+, 2016)
The first orbital parameters and period variation of the short-period
eclipsing binary AQ Boo.
Wang S., Zhang L., Pi Q., Han X.L., Zhang X., Lu H., Wang D., Li T.
<New Astron., 48, 42-48 (2016)>
=2016NewA...48...42W 2016NewA...48...42W (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry, VRI ; Photometry, CCD
Keywords: stars: binaries eclipsing - stars: period variation -
stars: individual: AQ Boo
Abstract:
We obtained the first VRI CCD light curves of the short-period contact
eclipsing binary AQ Boo, which was observed on March 22 and April 19
in 2014 at Xinglong station of National Astronomical Observatories,
and on January 20, 21 and February 28 in 2015 at Kunming station of
Yunnan Observatories of Chinese Academy of Sciences, China. Using our
six newly obtained minima and the minima that other authors obtained
previously, we revised the ephemeris of AQ Boo. By fitting the O-C
(observed minus calculated) values of the minima, the orbital period
of AQ Boo shows a decreasing tendency
dP/dt=-1.47(0.17)x10-17day/year. We interpret the phenomenon by mass
transfer from the secondary (more massive) component to the primary
(less massive) one. By using the updated Wilson & Devinney
(1971ApJ...166..605W 1971ApJ...166..605W) program, we also derived the photometric orbital
parameters of AQ Boo for the first time. We conclude that AQ Boo is a
near contact binary with a low contact factor of 14.43%, and will
become an over-contact system as the mass transfer continues.
Description:
On March 22 and April 19 in 2014, we observed AQ Boo with the 60cm
telescope at Xinglong Station of the National Astronomical
Observatories of China (NAOC). The CCD camera on this telescope has a
resolution of 1024 x 1024 pixels and its corresponding field of view
is 17'x17' (Yang, 2013NewA...25..109Y 2013NewA...25..109Y). The other three days of
data were obtained using the 1-m telescope at Yunnan Observatory of
Chinese Academy of Sciences, on January 20, 21 and February 28 in
2015. The CCD camera on this telescope has a resolution of 2048x2048
pixels and its corresponding field of view is 7.3'x7.3'. Bessel
VRI filters were used. The exposure times are 100-170s, 50-100s and
50-80s in the V, R, I bands, respectively.
Objects:
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RA (2000) DE Designation(s)
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13 47 26.93 +17 18 25.1 AQ Boo = TYC 1460-578-1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 70 323 Our observed photometric data of AQ Boo in V, R
and I bands using 60cm and 1m telescope
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD-V ? Heliocentric Julian Date of V band observation
14- 19 F6.3 mag dVmag ? Differential V band magnitude
21- 32 F12.4 d HJD-R ? Heliocentric Julian Date of R band observation
35- 40 F6.3 mag dRmag ? Differential R band magnitude
43- 54 F12.4 d HJD-I ? Heliocentric Julian Date of I band observation
56- 61 F6.3 mag dImag ? Differential I band magnitude
63- 72 A10 --- Tel Telescope
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 10-Nov-2016