Photometric elements, apsidal motion, and a third body in the eclipsing binary HP Aur

2005 ◽  
Vol 31 (2) ◽  
pp. 117-128 ◽  
Author(s):  
V. S. Kozyreva ◽  
A. V. Kusakin ◽  
Kh. F. Khaliullin
Keyword(s):  
Apsidal Motion ◽  
Third Body ◽  
Eclipsing Binary ◽  
Photometric Elements

Photometric elements, apsidal motion, and the third body in the eclipsing binary V974 Cyg

2011 ◽  
Vol 55 (11) ◽  
pp. 989-999 ◽  
Author(s):  
M. V. Kuznetsov ◽  
Kh. F. Khaliullin ◽  
A. I. Khaliullina ◽  
V. G. Metlov ◽  
L. V. Mossakovskaya
Keyword(s):  
Apsidal Motion ◽  
Third Body ◽  
Eclipsing Binary ◽  
The Third ◽  
Photometric Elements

Photometric elements and apsidal motion of the eclipsing binary NSV 18773

2006 ◽  
Vol 32 (11) ◽  
pp. 772-779 ◽  
Author(s):  
Kh. F. Khaliullin ◽  
S. V. Antipin ◽  
A. I. Khaliullina
Keyword(s):  
Apsidal Motion ◽  
Eclipsing Binary ◽  
Photometric Elements

Photometric elements and apsidal motion of the eclipsing binary ES Lac

2007 ◽  
Vol 51 (3) ◽  
pp. 245-255 ◽  
Author(s):  
V. S. Kozyreva ◽  
Kh. F. Khaliullin
Keyword(s):  
Apsidal Motion ◽  
Eclipsing Binary ◽  
Photometric Elements

scholarly journals New Data on the Eclipsing Binary V1848 Ori and Improved Orbital and Light Curve Solutions

2020 ◽  
Vol 29 (1) ◽  
pp. 72-80 ◽  
Author(s):  
Fatemeh Davoudi ◽  
Atila Poro ◽  
Fahri Alicavus ◽  
Afshin Halavati ◽  
Saeed Doostmohammadi ◽  
...  
Keyword(s):  
Binary System ◽  
Light Curve ◽  
Mass Function ◽  
Light Curves ◽  
Complete Analysis ◽  
Physical Parameters ◽  
Mass Ratio ◽  
Third Body ◽  
Eclipsing Binary

AbstractNew observations of the eclipsing binary system V1848 Ori were carried out using the V filter resulting in a determination of new times of minima and new ephemeris were obtained. We presented the first complete analysis of the system’s orbital period behavior and analysis of O-C diagram done by the GA and MCMC approaches in OCFit code. The O-C diagram demonstrates a sinusoidal trend in the data; this trend suggests a cyclic change caused by the LITE effect with a period of 10.57 years and an amplitude of 7.182 minutes. It appears that there is a third body with mass function of f (m3) = 0.0058 M⊙ in this binary system. The light curves were analyzed using the Wilson-Devinney code to determine some geometrical and physical parameters of the system. These results show that V1848 Ori is a contact W UMa binary system with the mass ratio of q = 0.76 and a weak fillout factor of 5.8%. The O’Connell effect was not seen in the light curve and there is no need to add spot.

Photometric elements of the eclipsing binary DN UMa=HR 4560

1986 ◽  
Vol 125 (1) ◽  
pp. 181-188 ◽  
Author(s):  
J. M. Garc�a ◽  
A. Gim�nez
Keyword(s):  
Eclipsing Binary ◽  
Photometric Elements

scholarly journals Eclipse timing variation of GK Vir: evidence of a possible Jupiter-like planet in a circumbinary orbit

2020 ◽  
Vol 497 (3) ◽  
pp. 4022-4029
Author(s):  
L A Almeida ◽  
E S Pereira ◽  
G M Borges ◽  
A Damineli ◽  
T A Michtchenko ◽  
...  
Keyword(s):  
Orbital Period ◽  
Binary Systems ◽  
Orbital Stability ◽  
Theoretical Description ◽  
Apsidal Motion ◽  
Variation Analysis ◽  
Third Body ◽  
Common Envelope ◽  
Cyclic Behaviour ◽  
Orbital Periods

ABSTRACT Eclipse timing variation analysis has become a powerful method to discover planets around binary systems. We applied this technique to investigate the eclipse times of GK Vir. This system is a post-common envelope binary with an orbital period of 8.26 h. Here, we present 10 new eclipse times obtained between 2013 and 2020. We calculated the O−C diagram using a linear ephemeris and verified a clear orbital period variation (OPV) with a cyclic behaviour. We investigated if this variation could be explained by the Applegate mechanism, the apsidal motion, or the light travel time (LTT) effect. We found that the Applegate mechanism would hardly explain the OPV with its current theoretical description. We obtained using different approaches that the apsidal motion is a less likely explanation than the LTT effect. We showed that the LTT effect with one circumbinary body is the most likely cause for the OPV, which was reinforced by the orbital stability of the third body. The LTT best solution provided an orbital period of ∼24 yr for the outer body. Under the assumption of coplanarity between the external body and the inner binary, we obtained a Jupiter-like planet around the GK Vir. In this scenario, the planet has one of the longest orbital periods, with a full observational baseline, discovered so far. However, as the observational baseline of GK Vir is smaller than twice the period found in the O−C diagram, the LTT solution must be taken as preliminary.

Apsidal motion in the eclipsing binary AS Cam

1983 ◽  
Vol 94 (1) ◽  
pp. 115-122 ◽  
Author(s):  
Kh. F. Khaliullin ◽  
V. S. Kozyreva
Keyword(s):  
Apsidal Motion ◽  
Eclipsing Binary
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