Photometric and spectroscopic investigation of the oscillating Algol type binary: EW Boo

Dogruel M. B., GÜROL B.

NEW ASTRONOMY, cilt.40, ss.20-27, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 40
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.newast.2015.03.007
  • Dergi Adı: NEW ASTRONOMY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.20-27
  • Anahtar Kelimeler: Stars: binaries: eclipsing, Stars: individual (EW Boo), Technique: photometry, Technique: spectroscopy, DELTA-SCUTI STARS, ECLIPSING BINARIES, LIGHT CURVES, PULSATION, COMPONENTS, CATALOG, CLUSTER
  • Ankara Üniversitesi Adresli: Evet

Özet

We obtained the physical and geometrical parameters of the EW Boo system, which exhibits short period and small amplitude pulsations as well as brightness variations due to orbital motion of components. Towards this end we carried out photometric observations at Ankara University Kreiken Observatory (AUKO) as well as spectroscopic observations at TUBITAK National Observatory (TNO). The light and radial velocity curves obtained from these observations have been simultaneously analyzed with PHOEBE and the absolute parameters of the system along with the geometric parameters of the components have been determined. Using model light curves of EW Boo, light curve regions in which the pulsations are active have been determined and as a result of analyses performed in the frequency region, characteristic parameters of pulsations have been obtained. We find that the results are compatible with current parameters of similar systems in the literature. The evolutionary status of the components is propounded and discussed. (C) 2015 Elsevier B.V. All rights reserved.