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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 4.

Example of the spectral fit for an observation taken on MJD = 59156.7. The region around the Hα line was masked out during the fitting process (gray area). The black line shows the observed spectrum, the red line is the best-fit model, the orange and blue lines are two components of the binary. The black line surrounded by the gray shaded region is the fit residuals with spectrum error.

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