We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Physical Properties of Three Eclipsing Binaries of V Crt, WY Cnc and CG Cyg with Radio Radiation.
- Authors
Cheng, Yao; Zhang, Liyun; Pi, Qingfeng; Zhu, Zhongzhong; Han, Xianming L.; Misra, Prabhakar; Yang, Zilu; Li, Baoda; Jiang, Linyan
- Abstract
Radio radiation has been detected across the Hertzsprung Russell diagram. We selected three objects with radio radiation (a semi-detached eclipsing binary V Crt, and two detached binaries WY Cnc and CG Cyg) that show magnetic activity. We made new photometric observations using a SARA 60 cm and NAOC 85 cm optical telescopes. Then, we obtained their orbital and starspot parameters by analyzing our light curves and published radial velocities using the updated Wilson-Devinney program. We revised the ephemeris information for V Crt and WY Cnc by analyzing the orbital minimum times. The orbital periods increased by 2.8 ( ± 2.1 ) × 10 − 9 d yr − 1 for V Crt, which maybe caused by mass transfer. The orbital periods decreased by −8.641 ( ± 0.004 ) × 10 − 8 d yr − 1 for WY Cnc. Orbital period change for CG Cyg was also found and we used a third-body of M 3 of 0.14 M ⊙ and a period of approximately 59.20 (0.36) yr to explain that. We also analysed the possible second period oscillation of CG Cyg with a cycle about 18.31 (0.06) yr. The long period changes of WY Cnc and CG Cyg might be caused by magnetic activity or stellar wind, rather than mass transfer.
- Subjects
ECLIPSING binaries; STELLAR activity; STELLAR winds; RADIATION; OPTICAL telescopes; MASS transfer
- Publication
Universe (2218-1997), 2022, Vol 8, Issue 11, p551
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe8110551