Basık yörüngeli erken B tipi örten çift sistemlerin eksen dönmesi analizi: V466 Car, V529 Car ve MN Tra

Öz

Bu çalışmada, basık yörüngeli örten çift sistemler içinden seçilen V466 Car, V529 Car ve MN Tra sistemlerinin eksen dönmesi analizleri (O-C) diyagramları kullanılarak yapılmış, eksen dönme parametreleri ilk kez hesaplanmıştır. Eksen dönmesi analizi için kullanılan minimum zamanları (O–C) Gateway veri tabanından alınmıştır.  Analizler sonucunda V466 Car, V529 Car ve MN Tra sistemlerinin yörünge dış merkezlikleri, sırasıyla, 0.205 ± 0.035, 0.497 ± 0.077, 0.282 ± 0.042, enberi noktasının boylamındaki ilerlemelerin hızı 0.0194 ± 0.0013, 0.0055 ± 0.0016, 0.0026 ± 0.0007 º/çevrim, bunlara karşılık gelen eksen dönme dönemleri ise 175 ± 12, 858 ± 203, 894 ± 204 yıl, olarak elde edilmiştir.

Anahtar Kelimeler

• Örten çift yıldızlar,eksen dönmesi,V466 Car,V529 Car,MN Tra

Apsidal motion analysis of early B-type eclipsing binary systems: V466 Car, V529 Car and MN Tra

Öz

In the present study, the eclipsing binaries which displaying apsidal motion effect in their orbits, V466 Car, V529 Car and MN Tra were analyzed by using (O-C) diyagrams to obtain the parameters of apsidal motion.  The minima times taken from (O–C) Gateway database were used for the apsidal motion analysis.  We found the orbital eccentricities 0.205 ± 0.035, 0.497 ± 0.077 and 0.282 ± 0.042, the rates of change of the longitude of periastron 0.0194 ± 0.0013, 0.0055 ± 0.0016, 0.0026 ± 0.0007 º/cycle, corresponding to the apsidal motion periods of about 175 ± 12, 858 ± 203 and 894 ± 204 years, for V466 Car, V529 Car and MN Tra, respectively.

Anahtar Kelimeler

• Eclipsing binaries,apsidal motion,V466 Car,V529 Car,MN Tra

Kaynakça

1. Claret, A. ve Giménez, A., Apsidal motion test: confrontation between theory and observations, Inside the stars; Proceedings of the 137th IAU Colloquium, Univ. of Vienna, Austria, Apr. 13-18, 1992. Astronomical Society of the Pacific (ASP Conference Series. Vol. 40), Edited by Werner W. Weiss and Annie Baglin, 469, (1993).
2. Claret, A. ve Willems, B., New results on the apsidal-motion test to stellar structure and evolution including the effects of dynamic tides, Astronomy and Astrophysics, 388, 518-530 (2002).
3. Bulut, İ. ve Demircan, O., A new catalogue of eclipsing binary stars with eccentric orbits*, Monthly Notices of the Royal Astronomical Society, 378, 1, 179-181, (2007).
4. Bulut I. ve Bulut A., BVR Photometric Analysis of GSC 4277-0586 and GSC 3152-1202, Acta Astronomica, 65, 127-138, (2015).
5. Gimenez, A. ve Garcia-Pelayo, J. M., A new method for the analysis of apsidal motions in eclipsing binaries, Astrophysics and Space Science, 92, 1, 203-222, (1983).
6. Giménez, A. ve Bastero, M., A Revision of the Ephemeris-Curve Equations for Eclipsing Binaries with Apsidal Motion, Astrophysics and Space Science, 226, 1, 99-107, (1995).
7. Zasche, P., Liakos, A., Niarchos, P., Wolf, M ve Gazeas, K., Period changes in six contact binaries: WZ And, V803 Aql, DF Hya, PY Lyr, FZ Ori, and AH Tau, New Astronomy, 14, 2, 121-128, (2009).
8. O-C gateway Database of times of minima (E) and maxima (RR), http://var2.astro.cz/ocgate/, (19.05.2017).

9. Strohmeier, W., New Southern Variables, Information Bulletin on Variable Stars, 158, 1, (1966).
10. Houk, N. ve Cowley, A. P., University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0., University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0., by Houk, N.; Cowley, A. P.. Ann Arbor, MI (USA): Department of Astronomy, University of Michigan, 19 + 452 , (1975).
11. ESA, The HIPPARCOS and TYCHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission, The Hipparcos and Tycho catalogues. Astrometric and photometric star catalogues derived from the ESA Hipparcos Space Astrometry Mission, Publisher: Noordwijk, Netherlands: ESA Publications Division, 1997, Series: ESA SP Series, 1200, (1997).
12. Bulut, İ. ve Demircan, O., Light curve analyses of new eclipsing binary systems with eccentric orbits, New Astronomy, 13, 4, 252-254, (2008).
13. Perryman, M. A. C., Lindegren, L., Kovalevsky, J., Hoeg, E., Bastian, U., Bernacca, P. L., Crézé, M., Donati, F., Grenon, M., Grewing, M., van Leeuwen, F., van der Marel, H., Mignard, F., Murray, C. A., Le Poole, R. S., Schrijver, H., Turon, C., Arenou, F., Froeschlé, M. ve Petersen, C. S., The HIPPARCOS Catalogue, Astronomy and Astrophysics, 323, L49-L52, (1997).