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Year 2020, Volume: 1 Issue: 1, 21 - 23, 11.12.2020

Abstract

References

  • Applegate, J.H.: A echanism for orbital period modulation in close binaries. ApJ 385 (1992) 621--629.
  • Aslan, Z., Derman, E.: Photoelectric observations of CK Bootis. A&AS 66 (1986) 281--302.
  • Bond, H.E.: Eclipsing binaries found spectroscopically. II. HD 128141. PASP 87 (1975) 877--878.
  • D'Angelo, C., van Kerkwijk, M.H., Rucinski, S.M.: Contact binaries with additional components. II. A spectroscopic search for faint tertiaries. AJ 132 (2006) 650--662.
  • Demircan, O.: BV observations of W UMa-type binaries: CK Bootis, BI CVn, and AH Vir. Ap&SS 135 (1987) 169--174.
  • Demircan, O., Derman, E., Müyesseroğlu, Z.: A period study of AW UMa. A&A 263 (1992) 165--171.
  • Demircan, O.: in The Impact of Long-Term Monitoring on Variable Star Research: Astrophysics, Instrumentation, Data Handling, Archiving, Proceedings of the NATO Advanced Research Workshop, held in Ghent, Belgium, November 15-18, 1993, Dordrecht: Kluwer, 1994, edited by Christiaan Sterken and Mart De Groot. NATO Advanced Science Institutes (ASI) Series C, 436 (1994) 77.
  • Irwin, J.~B.: Standard light-time curves. AJ 64 (1959) 149.
  • Jia, G., Liu, X., Huang, H.: 1991 Photometry of the W UMa type binary CK Boo. IBVS (1992) 3727.
  • Kalcı, R., Derman, E.: CK Bootis: a W UMa system with a small mass ratio. AN 326 (2005) 342--348.
  • Paschke, A., Brát, L.: O-C Gateway, a Collection of Minima Timings. OEJV 23 (2006) 13.
  • Pribulla, T., Rucinski, S. M.: in Multiple stars across the H-R Diagram, ESO Astrophysics Symposia (Berlin: Springer) (2008) 163.
  • Qian, S., Liu, Q.: A possible connection between the variability of light curve and the change of the orbital period in the contact binary CK Bootis. Ap&SS 271 (2000) 331--339.
  • Pop, A., Vamoş, C.: Biperiodic orbital period modulation of the W UMa binary CK Bootis. NewA 17 (2012) 667--672.
  • Rucinski, S., Lu, W.: Radial velocity studies of close binary stars. II. AJ 118 (1999) 2451--2459.
  • Rucinski, S.M., Pribulla, T., van Kerkwijk, M.H.: Contact Binaries with Additional Components. III. A Search Using Adaptive Optics. AJ 134 (2007) 2353--2365.
  • Tokovinin, A., Thomas, S., Sterzik, M., Udry, S.: Tertiary companions to close spectroscopic binaries. A&A 450 (2006) 681--693.
  • Yüce, K., Selam, S.O., Albayrak, B., Ak, T.: Monitoring secular orbital period variations of some eclipsing binaries at the Ankara University Observatory. Ap&SS 304 (2006) 67--69.

W UMa'ların Bileşen Yıldızları

Year 2020, Volume: 1 Issue: 1, 21 - 23, 11.12.2020

Abstract

Değen çift yıldızlarda minimum zamanları kullanılarak yapılan analizlerden belirlenen dönem değişimleri çoğunlukla karmaşık bir yapı sergiler. Bunlar çoğunlukla kütle aktarımından kaynaklanan parabolik bir değişim üzerine binmiş bir kaç çevrimsel değişimi gösterirler Büyük olasılıkla bu çevrimsel değişimler, değen çift sistemin etrafında dönen üçüncü hatta dördüncü, beşinci bileşenden kaynaklanır. Bu çalışmada bir değen çift yıldız sistemi olan CK Boo'nun dönem değişimi ayrıntılı olarak incelenmiş, dönem değişiminin nedenleri sunulmuştur.

References

  • Applegate, J.H.: A echanism for orbital period modulation in close binaries. ApJ 385 (1992) 621--629.
  • Aslan, Z., Derman, E.: Photoelectric observations of CK Bootis. A&AS 66 (1986) 281--302.
  • Bond, H.E.: Eclipsing binaries found spectroscopically. II. HD 128141. PASP 87 (1975) 877--878.
  • D'Angelo, C., van Kerkwijk, M.H., Rucinski, S.M.: Contact binaries with additional components. II. A spectroscopic search for faint tertiaries. AJ 132 (2006) 650--662.
  • Demircan, O.: BV observations of W UMa-type binaries: CK Bootis, BI CVn, and AH Vir. Ap&SS 135 (1987) 169--174.
  • Demircan, O., Derman, E., Müyesseroğlu, Z.: A period study of AW UMa. A&A 263 (1992) 165--171.
  • Demircan, O.: in The Impact of Long-Term Monitoring on Variable Star Research: Astrophysics, Instrumentation, Data Handling, Archiving, Proceedings of the NATO Advanced Research Workshop, held in Ghent, Belgium, November 15-18, 1993, Dordrecht: Kluwer, 1994, edited by Christiaan Sterken and Mart De Groot. NATO Advanced Science Institutes (ASI) Series C, 436 (1994) 77.
  • Irwin, J.~B.: Standard light-time curves. AJ 64 (1959) 149.
  • Jia, G., Liu, X., Huang, H.: 1991 Photometry of the W UMa type binary CK Boo. IBVS (1992) 3727.
  • Kalcı, R., Derman, E.: CK Bootis: a W UMa system with a small mass ratio. AN 326 (2005) 342--348.
  • Paschke, A., Brát, L.: O-C Gateway, a Collection of Minima Timings. OEJV 23 (2006) 13.
  • Pribulla, T., Rucinski, S. M.: in Multiple stars across the H-R Diagram, ESO Astrophysics Symposia (Berlin: Springer) (2008) 163.
  • Qian, S., Liu, Q.: A possible connection between the variability of light curve and the change of the orbital period in the contact binary CK Bootis. Ap&SS 271 (2000) 331--339.
  • Pop, A., Vamoş, C.: Biperiodic orbital period modulation of the W UMa binary CK Bootis. NewA 17 (2012) 667--672.
  • Rucinski, S., Lu, W.: Radial velocity studies of close binary stars. II. AJ 118 (1999) 2451--2459.
  • Rucinski, S.M., Pribulla, T., van Kerkwijk, M.H.: Contact Binaries with Additional Components. III. A Search Using Adaptive Optics. AJ 134 (2007) 2353--2365.
  • Tokovinin, A., Thomas, S., Sterzik, M., Udry, S.: Tertiary companions to close spectroscopic binaries. A&A 450 (2006) 681--693.
  • Yüce, K., Selam, S.O., Albayrak, B., Ak, T.: Monitoring secular orbital period variations of some eclipsing binaries at the Ankara University Observatory. Ap&SS 304 (2006) 67--69.
There are 18 citations in total.

Details

Primary Language English
Subjects Astronomical Sciences (Other)
Journal Section Conference Paper
Authors

İbrahim Bulut This is me

Osman Demircan This is me

Publication Date December 11, 2020
Submission Date September 18, 2015
Published in Issue Year 2020 Volume: 1 Issue: 1

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TJAA is a publication of Turkish Astronomical Society (TAD).