Two Light Curves Analysis of W UMa-Type Eclipsing Binary Systems: KIC 7375612 and KIC 9898401

Yıl 2021, , 192 - 199, 01.03.2021

Ahmet Bulut , İbrahim Bulut

https://doi.org/10.21597/jist.795362

Öz

In this study, the light curves of the ultra-short period W UMa type KIC 7375612 and KIC 9898401 systems were analyzed for the geometric and physical parameters of the systems for the first time. Observation data for light curve analysis were taken from Kepler Eclipsing Binary Catalog. The light curves of KIC 7375612 and KIC 9898401 were analyzed by using PHOEBE code. According to the results, we calculated KIC 7375612 and KIC 9898401 of the photometric mass ratio 0.8059 ± 0.0002 and 0.8103 ± 0.0002, and inclination 60º.18 ± 0.05 and 67º.17 ± 0.11, respectively. The effective temperatures were obtained to be 6682 K and 6672 K for KIC 7375612, to be 7376 K and 7365 K for KIC 9898401.

Anahtar Kelimeler

W UMa type binary stars, Light curve analysis, Contact binary systems, KIC 7375612, KIC 9898401

İki W UMa Tipi Örten Çift Yıldız Sisteminin Işık Eğrisi Analizleri: KIC 7375612 ve KIC 9898401

Öz

Bu çalışmada, çok kısa yörünge dönemli W UMa türü örten çift sistemler KIC 7375612 ve KIC 9898401’nin ışık eğrileri analizleri yapılarak, sistemlere ilişkin geometrik ve fiziksel parametreler ilk kez hesaplanmıştır. Işık eğrisi analizi için kullanılan gözlem verileri Kepler Örten Çiftler Kataloğundan alınmıştır. Işık eğrisi analizleri PHOEBE kodu kullanılarak yapılmıştır. Analizlerin sonuçlarına göre, KIC 7375612 ve KIC 9898401’nin fotometrik kütle oranları sırasıyla 0.8059 ± 0.0002, 0.8103 ± 0.0002 ve yörünge eğimleri 60º.18 ± 0.05, 67º.17 ± 0.11 olarak elde edilmiştir. Sistemleri oluşturan bileşenlerin sıcaklıkları KIC 7375612 için 6682 K ve 6672 K, KIC 9898401 için ise 7376 K ve 7365 K olarak belirlenmiştir.

Anahtar Kelimeler

W UMa türü çift yıldız, Işık eğrisi analizi, Değen çift sistemler, KIC 7375612 ve KIC 9898401

Kaynakça

• Batalha NM, Borucki WJ, Koch DG, Bryson ST, Haas MR, Brown TM, Caldwell DA, Hall JR, Gilliland RL, Latham DW, Meibom S, Monet DG, 2010. Selection, Prioritization, and Characteristics of Kepler Target Stars. The Astrophysical Journal Letters, 713 (2): 109-114.
• Borucki WJ, Koch D, Basri G, Batalha N, Brown T, Caldwell D, Caldwell J, Christensen-Dalsgaard J, Cochran WD, Devore E, Dunham EW, Dupree AK, Gautier TN, Geary JC, Gilliland R, Gould A, Howell SB, Jenkins JM, Kondo Y, Latham DW, Marcy GW, Meibom S, Kjeldsen H, Lissauer JJ, Monet DG, Morrison D, Sasselov D, Tarter J, Boss A, Brownlee D, Owen et al., 2010. Kepler Planet-Detection Mission: Introduction and First Results. Science, 327 (5968): 977-980.
• Dimitrov DP, Kjurkchieva DP, 2015. Ultrashort-period main-sequence eclipsing systems: new observations and light-curve solutions of six NSVS binaries. Monthly Notices of the Royal Astronomical Society, 448 (3): 2890-2899.
• Drake AJ, Djorgovski SG, Garcia-Alvarez D, Graham MJ, Catelan M, Mahabal AA, Donalek C, Prieto JL, Torrealba G, Abraham S, Williams R, Larson S, Christensen E, 2014. Ultra-short Period Binaries from the Catalina Surveys. The Astrophysical Journal, 790 (2): 1-13.
• Kepler Eclipsing Binaries, 2019. http://keplerebs.villanova.edu/ (Erişim Tarihi: 09.07.2020).
• Lucy LB, 1968. The Structure of Contact Binaries. Astrophysical Journal, 151: 1123-1135.
• Prsa A, Batalha N, Slawson RW, Doyle LR, Welsh WF, Orosz JA, Seager S, Rucker M, Mjaseth K, Engle SG, Conroy K, Jenkins J, Caldwell D, Koch D, Borucki W, 2011. Kepler Eclipsing Binary Stars. I. Catalog and Principal Characterization of 1879 Eclipsing Binaries in the First Data Release. The Astronomical Journal, 141 (3): 1-16.
• Prsa A, Zwitter T, 2005. A Computational Guide to Physics of Eclipsing Binaries. I. Demonstrations and Perspectives. The Astrophysical Journal, 628 (1): 426-438.
• Rucinski SM, 1992. Can Full Convection Explain the Observed Short-Period Limit of the W UMa-Type Binaries?. Astronomical Journal, 103: 960-966.
• Slawson RW, Prsa A, Welsh WF, Orosz JA, Rucker M, Batalha M, Doyle LR, Engle SG, Conroy K, Coughlin J, Gregg TA, Fetherolf T, Short DR, Windmiller G, Fabrycky DC, Howell SB, Jenkins JM, Uddin K, Mullally F, Seader SE, Thompson SE, Sanderfer DT, Borucki W, Koch D, 2011. Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release. The Astronomical Journal, 142 (5): 1-14.
• Van Hamme W, 1993. New limb-darkening coefficients for modeling binary star light curves. Astronomical Journal, 106 (5): 2096-2117.
• Wilson RE, Devinney EJ, 1971. Realization of Accurate Close-Binary Light Curves: Application to MR Cygni. Astrophysical Journal, 166: 605-619.