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First Double Red Giant Algol System with Active Mass Transfer

  • Authors: Mikhail Yu. Kovalev, Hailiang Chen, 海亮 陈, Sufen Guo, 素芬 郭, Jiao Li, 蛟 李, Hongwei Ge, 宏伟 葛, Dengkai Jiang, 登凯 姜, Marina A. Burlak, Natalia P. Ikonnikova, Xuefei Chen, 雪飞 陈, Zhanwen Han, 占文 韩

Mikhail Yu. Kovalev et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 10.

Position of J05+50 (black circle) in Hertzsprung–Russel diagram. The isochrones (from bottom to top) from PARSEC models have an age of 109.4/109.2/109.0/108.8/108.6 yr, respectively. The gray background stars are selected from Gaia DR3 with distances d  <  200 pc, galactic latitude ∣b∣ < 10∘ and G  <  16 mag. No extinction or reddening corrections were applied to observed positions.

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