Outer and Inner Orbits of the Bright Doubly Eclipsing System BU CMiстатья
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Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
Аннотация:All three orbits for doubly eclipsing system (2+2) BU CMi were significantly refined using new TESS data and published spectral observations. New values of apsidal motion and accurate physical parameters of the system are obtained. Component A: T1=9860±50K, M1=(2.7±0.15)Msun, R1=(2.19±0.07)Rsun, T2=10000±80K, M2=(2.7±0.15)Msun, R2=(2.23±0.07)Rsun, apsidal period Paps=25.06yrs.Component B: T1=10260±80K, M1=(2.7±0.15)Msun, R1=(2.33±0.02)Rsun, T2=9700±50K, M2=(2.5±0.15)Msun, R2=(2.04±0.02)Rsun, apsidal period Paps=25.22yrs. Orbiting period Porb=(5.88±0.03)yrs. Photometric parallax exactly equals Gaia DR3 value pi=0.00401". The age of the system is determined to be 224 Myr at solar chemical composition. The work is partially based on a talk presented at the Modern Stellar Astronomy 2025 Conference.