Discovery of a third body around semi-detached binary V527 Dra through eclipse timing and radial velocity variations

ŞENAVCI H. V., Bohlender D., BAHAR E., Gu S., ÖZAVCI İ., YILMAZ M., ...Daha Fazla

Contributions of the Astronomical Observatory Skalnate Pleso, cilt.55, sa.3, ss.295-300, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 3
  • Basım Tarihi: 2025
  • Doi Numarası: 10.31577/caosp.2025.55.3.295
  • Dergi Adı: Contributions of the Astronomical Observatory Skalnate Pleso
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.295-300
  • Anahtar Kelimeler: (Stars:) binaries (including multiple): close, Stars: individual: V527 Dra, Techniques: radial velocities
  • Ankara Üniversitesi Adresli: Evet

Özet

The mid-eclipse times obtained using TESS data for the semi-detached binary V527 Dra show cyclic variations attributed to the presence of an additional body. Additionally, the broadening profiles (BFs) of V527 Dra, obtained from spectroscopic data gathered between 2020 and 2024, reveal a third peak with varying radial velocities over time, further indicating the presence of a third body. Therefore, in this study, using the radial velocity variations of the third component and the eclipse timing variations from the TESS data, we were able to constrain the orbital parameters of the third component.