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KIC 7385478: An Eclipsing Binary with a γ Doradus Component

  • Orkun Özdarcan (a1) and Hasan Ali Dal (a1)
Abstract
Abstract

We present spectroscopic and photometric analysis of the eclipsing binary KIC 7385478. We find that the system is formed by F1V + K4III–IV components. Combining results from analysis of spectroscopic data and Kepler photometry, we calculate masses and radii of the primary and the secondary components as M 1 = 1.71 ± 0.08 M, M 2 = 0.37 ± 0.04 M and R 1 = 1.59 ± 0.03 R, R 2 = 1.90 ± 0.03 R, respectively. Position of the primary component in HR diagram is in the region of γ Doradus type pulsators and residuals from light curve modelling exhibit additional light variation with a dominant period of ~ 0.5 d. These are clear evidences of the γ Doradus type pulsations on the primary component. We also observe occasional increase in amplitude of the residuals, where the orbital period becomes the most dominant period. These may be attributed to the cool star activity originating from the secondary component.

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Corresponding author
Email: orkun.ozdarcan@ege.edu.tr
References
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Aerts C., Christensen-Dalsgaard J., & Kurtz D. W. 2010, Asteroseismology, ed. Burton W. B. and Trimble V. (New York: Springer), 49
Aitken R. G. 1935, The binary stars (2nd edn.; New York and London: McGraw-Hill)
Applegate J. H. 1992, ApJ, 385, 621
Armstrong D. J., Gómez Maqueo Chew Y., Faedi F., & Pollacco D. 2014, MNRAS, 437, 3473
Blanco-Cuaresma S., Soubiran C., Heiter U., & Jofré P. 2014, A&A, 569, A111
Borkovits T., et al. 2016, MNRAS, 455, 4136
Breger M., et al. 1993, A&A, 271, 482
Çakırlı Ö. 2015, NewA, 38, 55
Çakırlı Ö., & Ibanoglu C. 2016, NewA, 45, 36
Castelli F., & Kurucz R. L. 2004, in Proc. IAU Symp. 210, Modelling of Stellar Atmospheres, Piskunov N., Weiss W. W., & Gray D. F., eds. (San Francisco: ASP), A20, arXiv:astro-ph/0405087
Chapellier E., & Mathias P. 2013, A&A, 556, A87
Cunha M. S., et al. 2007, A&ARev, 14, 217
Debosscher J., et al. 2013, A&A, 556, A56
Gray D. F. 2005, The Observation and Analysis of Stellar Photospheres (3rd edn.; Cambridge: Cambridge University Press)
Gray R. O., & Corbally C. J. 1994, AJ, 107, 742
Guo Z., Gies D. R., Matson R. A., & García Hernández A. 2016, ApJ, 826, 69
Henry G. W., Fekel F. C., & Henry S. M. 2005, AJ, 129, 2815
Herzberg W., & Glogowski K. 2014, Precision Asteroseismology, 301, 421
Ibanoǧlu C., Taş G., Sipahi E., & Evren S. 2007, MNRAS, 376, 573
Kaye A. B., Handler G., Krisciunas K., Poretti E., & Zerbi F. M. 1999, PASP, 111, 840
Lubow S. H., & Shu F. H. 1975, ApJ, 198, 383
Maceroni C., Montalbán J., Gandolfi D., Pavlovski K., & Rainer M. 2013, A&A, 552, A60
Pigulski A., Pojmański G., Pilecki B., & Szczygieł D. M. 2009, AcAau, 59, 33
Pinsonneault M. H., et al. 2012, ApJS, 199, 30
Pols O. R., Schröder K.-P., Hurley J. R., Tout C. A., & Eggleton P. P. 1998, MNRAS, 298, 525
Prša A., et al. 2011, AJ, 141, 83
Ryabchikova et al. 2015, PhyS, 90, 054005
Slawson R. W., et al. 2011, AJ, 142, 160
Tonry J., & Davis M. 1979, AJ, 84, 1511
Uytterhoeven K., et al. 2011, A&A, 534A, 125
van Hamme W. 1993, AJ, 106, 2096
Warner P. B., Kaye A. B., & Guzik J. A. 2003, ApJ, 593, 1049
Wilson R. E., & Devinney E. J. 1971, ApJ, 166, 605
Wilson R. E., & Van Hamme W. 2014, ApJ, 780, 151
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Publications of the Astronomical Society of Australia
  • ISSN: 1323-3580
  • EISSN: 1448-6083
  • URL: /core/journals/publications-of-the-astronomical-society-of-australia
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