V965 Cephei revisited: evidence for a binary system
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917101151715328 |
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| author | Pyatnytskyy, Maksym |
| author_facet | Pyatnytskyy, Maksym |
| contents | We extended the $O-C$ diagram for V965 Cep with all currently available observations in the Johnson V filter and added unfiltered ones. The new, up-to-date $O-C$ diagram shows that the seeming period change previously revealed by the author does not occur uniformly. Instead, the near-parabolic part of the $O-C$ diagram can be a part of a periodic curve. This could be a sign of the second body in the system. Based on our observations, we also estimated the $B-V$ index of the star to be $0.48 \pm 0.05$ at maximum brightness and $0.57 \pm 0.05$ at minimum brightness. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_18312 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | V965 Cephei revisited: evidence for a binary system Pyatnytskyy, Maksym Solar and Stellar Astrophysics We extended the $O-C$ diagram for V965 Cep with all currently available observations in the Johnson V filter and added unfiltered ones. The new, up-to-date $O-C$ diagram shows that the seeming period change previously revealed by the author does not occur uniformly. Instead, the near-parabolic part of the $O-C$ diagram can be a part of a periodic curve. This could be a sign of the second body in the system. Based on our observations, we also estimated the $B-V$ index of the star to be $0.48 \pm 0.05$ at maximum brightness and $0.57 \pm 0.05$ at minimum brightness. |
| title | V965 Cephei revisited: evidence for a binary system |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2505.18312 |