J/AJ/154/260 Three short-period eclipsing binaries BVRI photometry (Pi+, 2017)
Magnetic activity and period variation studies of the short-period eclipsing
binaries.
II. V1101 Her, AD Phe, and NSV 455 (J011636.15-394955.7).
Pi Q.-F., Zhang L.-Y., Bi S.-L., Han X.L., Wang D.-M., Lu H.-P.
<Astron. J., 154, 260 (2017)>
=2017AJ....154..260P 2017AJ....154..260P (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry, infrared ; Photometry, UBVRI
Keywords: binaries: eclipsing - stars: activity ; starspots
Abstract:
In this paper, we present new BVRI light curves of short-period
contact eclipsing binaries V1101 Her and AD Phe from our observations
carried out from 2014 to 2015 using the SARA KP and SARA CT telescopes.
There is an eclipsing binary located at α(2000)=01h16m36.15s
and δ(2000)=-39°49'55.7" in the field of view of AD Phe. We
derived an updated ephemeris and found there a cyclic variation
overlaying a continuous period increase (V1101 Her) and decrease (AD Phe).
This kind of cyclic variation may be attributed to the light time
effect via the presence of the third body or magnetic activity cycle.
The orbital period increase suggests that V1101 Her is undergoing a
mass-transfer from the primary to the secondary component
(dM1/dt=2.64(±0.11)x10-6 M☉/yr) with the third body
(P3=13.9(±1.9) years), or 2.81(±0.07)x10-6 M☉/yr for an
increase and magnetic cycle (12.4(±0.5) years). The long-term period
decrease suggests that AD Phe is undergoing a mass-transfer from the
secondary component to the primary component at a rate of
-8.04(±0.09)x10-8 M☉/yr for a period decrease and the third
body (P3=56.2(±0.8) years), or -7.11(±0.04)x10-8 M☉/yr for
a decrease and magnetic cycle (50.3(±0.5) years). We determined their
orbital and geometrical parameters. For AD Phe, we simultaneously
analyzed our BVRI light curves and the spectroscopic observations obtained
by Duerbeck & Rucinski (2007AJ....133..169D 2007AJ....133..169D). The spectral type of
V1101 Her was classified as G0±2V by LAMOST stellar spectra survey.
The asymmetry of the R-band light curve of AD Phe obtained by
McFarlane & Hilditch in 1987 (1987MNRAS.227..381M 1987MNRAS.227..381M) is explained by a
cool spot on the primary component.
Description:
We carried out new CCD photometric observations of two short-period
eclipsing binaries from 2014 to 2015. We observed AD Phe using the
SARA 60 cm telescope at the Cerro Tololo Inter-American Observatory in
Chile on 2014 October 07. We observed V1101 Her using the SARA 91.4 cm
telescope at the Kitt Peak National Observatory in USA on 2015 June 29
and 30, and October 10. The CCD cameras on both telescopes have a
2048x2048 pixel CCD with the Bessell BVRI filters. We used it in 2x2
binning mode, resulting in an effective resolution of 1024x1024 pixels.
Objects:
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RA (ICRS) DE Designation(s)
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18 07 33.26 +46 54 35.0 V1101 Her = V* V1101 Her
01 16 38.07 -39 42 31.3 AD Phe = V* AD Phe
01 16 36.10 -39 49 55.4 NSV 455 = WISE J011636.10-394955.3
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File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 140 8 Observation Log
table2.dat 89 1052 BVRI Photometric observational data for the
three short-period eclipsing binaries
table3.dat 111 6 Newly obtained light of minima times for the
three short-period eclipsing binaries
table4.dat 69 92 Minimum times and relevant parameters of
V1101 Her & AD Phe
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See also:
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/other/IBVS/5438 : 162-nd list of minima of eclipsing binaries
(Diethelm, 2003)
J/other/IBVS/5543 : 163-nd list of minima of eclipsing binaries
(Diethelm+, 2004)
J/A+A/528/A90 : SuperWASP short period eclipsing binaries (Norton+, 2011)
J/MNRAS/412/1787 : Physical parameters of 62 eclipsing binaries (Deb+, 2011)
J/AJ/147/50 : Differential BVRI light curves of DV Psc (Pi+, 2014)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
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1- 10 A10 --- Target Target type (Variable, Comparison or Check star)
12- 34 A23 --- Name Target name
36- 58 A23 --- OName Other name
60- 71 A12 s ExpTime Exposure times
73- 74 I2 h RAh Hour of Right Ascension (J2000)
76- 77 I2 min RAm Minute of Right Ascension (J2000)
79- 83 F5.2 s RAs Second of Right Ascension (J2000)
85 A1 --- DE- Sign of the Declination (J2000)
86- 87 I2 deg DEd Degree of Declination (J2000)
89- 90 I2 arcmin DEm Arcminute of Declination (J2000)
92- 95 F4.1 arcsec DEs Arcsecond of Declination (J2000)
97-102 F6.3 mag Jmag [9.271/12.811]? 2MASS J band magnitude
104-109 F6.3 mag Hmag [8.944/12.324]? 2MASS H band magnitude
111-116 F6.3 mag Ksmag [8.871/13.27]? 2MASS Ks band magnitude
118-140 A23 --- Ref Reference (2006, Cat. VII/233)
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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-B ? Heliocentric Julian Date of B band observation
14- 19 F6.3 mag DBmag [-1.204/3.548]? Differential Bessel B band
magnitude
21- 32 F12.4 d HJD-V ? Heliocentric Julian Date of V band observation
34- 39 F6.3 mag DVmag [-1.296/3.065]? Differential Bessel V band
magnitude
41- 52 F12.4 d HJD-R ? Heliocentric Julian Date of R band observation
54- 59 F6.3 mag DRmag [-1.367/4.81]? Differential Bessel R band
magnitude
61- 72 F12.4 d HJD-I ? Heliocentric Julian Date of I band observation
74- 79 F6.3 mag DImag [-1.414/2.467]? Differential Bessel I band
magnitude
81- 89 A9 --- Name System name (V1101 Her, AD Phe, NSV 455)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name System name (V1101 Her, AD Phe, NSV 455)
11- 21 F11.5 d HJD-Bmin B band minimum time (HJD-2400000)
23- 29 F7.5 d e_HJD-Bmin Uncertainty in HJD-Bmin
31- 41 F11.5 d HJD-Vmin V band minimum time (HJD-2400000)
43- 49 F7.5 d e_HJD-Vmin Uncertainty in HJD-Vmin
51- 61 F11.5 d HJD-Rmin R band minimum time (HJD-2400000)
63- 69 F7.5 d e_HJD-Rmin Uncertainty in HJD-Rmin
71- 81 F11.5 d HJD-Imin I band minimum time (HJD-2400000)
83- 89 F7.5 d e_HJD-Imin Uncertainty in HJD-Imin
91-101 F11.5 d HJD-BVRImin Mean BVRI band minimum time (HJD-2400000)
103-109 F7.5 d e_HJD-BVRImin Uncertainty in HJD-BVRImin
111 A1 --- Type Minimum type (P=Primary or S=Secondary)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name System name (V1101 Her, AD Phe, NSV 455)
12- 21 F10.4 d JD Minimum time (HJD-2400000)
23- 28 F6.4 d e_JD [0.0001/0.004]? Uncertainty in JD
30 A1 --- Type Minimum type (P=Primary or S=Secondary)
32- 34 A3 --- Meth Observation method (1)
36- 43 F8.1 d Cycle [-41002.5/34385.0] Day in magnetic activity
cycle
45- 50 F6.4 d (O-C)1 [-0.0368/0.0941] Observed-Calculated residuals 1
52- 58 F7.4 d (O-C)2 [-0.0356/0.0297] 2nd Observed-Calculated
residuals, 3rd body fitting
60- 66 F7.4 d (O-C)2s [-0.0328/0.03] 2nd Observed-Calculated
residuals, sinusoidal fitting
68- 69 I2 --- Ref [1/23] Reference (2)
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Note (1): Observation method as follows:
CCD = Charge-coupled device;
pg = Photograph;
pe = Photometric.
Note (2): Reference as follows:
1 = Blattler & Diethelm (2002IBVS.5333....1B 2002IBVS.5333....1B);
2 = Diethelm (2003, J/other/IBVS/5438);
3 = Diethelm (2004, J/other/IBVS/5543);
4 = Diethelm (2006IBVS.5713....1D 2006IBVS.5713....1D);
5 = Diethelm (2007IBVS.5781....1D 2007IBVS.5781....1D);
6 = Diethelm (2010IBVS.5920....1D 2010IBVS.5920....1D);
7 = Hubscher et al. (2012IBVS.6010....1H 2012IBVS.6010....1H);
8 = Nelson (2012IBVS.6018....1N 2012IBVS.6018....1N);
9 = Raetz Manfred, http://var.astro.cz/ocgate/;
10 = Nelson (2014IBVS.6092....1N 2014IBVS.6092....1N);
11 = Nelson (2016IBVS.6164....1N 2016IBVS.6164....1N);
12 = This study;
13 = Agerer Franz, http://var.astro.cz/ocgate/;
14 = Cervinka L., http://var.astro.cz/ocgate/;
15 = Strohmeier & Bauernfeind (1969IBVS..360....1S 1969IBVS..360....1S);
16 = Wolf et al. (1982IBVS.2185....1W 1982IBVS.2185....1W);
17 = Cerruti (1986AcA....36..241C 1986AcA....36..241C);
18 = Wolf, et al. (2000A&AS..147..243W 2000A&AS..147..243W);
19 = Hipparcos, http://var.astro.cz/ocgate/;
20 = Pojmanski G., http://var.astro.cz/ocgate/;
21 = Richards Tom, http://var.astro.cz/ocgate/;
22 = Masek Martin, http://var.astro.cz/ocgate/;
23 = Tapia Luis F, http://var.astro.cz/ocgate/.
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History:
From electronic version of the journal
References:
Pi et al. Paper I. 2014AJ....147...50P 2014AJ....147...50P, Cat. J/AJ/147/50
Lu et al. Paper III. 2018AJ....156...88L 2018AJ....156...88L
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 28-Aug-2018