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ORIGINAL RESEARCH article

Front. Astron. Space Sci.
Sec. Stellar and Solar Physics
Volume 11 - 2024 | doi: 10.3389/fspas.2024.1497989

The first photometric investigation of two short-period Algol-type eclipsing binary: IW UMa and V367 Gem

Provisionally accepted
Xiao-Man Tian Xiao-Man Tian 1*Linqiao Jiang Linqiao Jiang 2Zhi-Hua Wang Zhi-Hua Wang 3Jing-Jing Wang Jing-Jing Wang 3
  • 1 Shandong Jiaotong University, Jinan, China
  • 2 Leshan Normal University, Leshan, Sichuan, China
  • 3 China University of Petroleum Beijing, Karamay Campus, Karamay, Xinjiang, China

The final, formatted version of the article will be published soon.

    The first multi-color photometric observations and low-resolution spectra of the Algol-type shortperiod eclipsing binary systems IW UMa and V367 Gem are presented. The stellar atmospheric parameters of the primary stars were derived through the spectral analysis. The ground-based and TESS-based light curves were analyzed using the Wilson-Devinney code. The photometric solutions suggest that IW UMa and V367 Gem are both typical Algol systems in a semidetached configuration, with the secondary stars filling their Roche lobes. The mass ratios of IW UMa and V367 Gem are 0.145(3) and 0.478(15), respectively. A third light was detected in the light curve analysis of V367 Gem with a luminosity contribution of L 3 /L total = 44.38%. Through the O-C analysis, we found that the period of IW UMa is likely increasing over the long term superposed with cyclic variation; The period of V367 Gem is decreasing at a rate of dP/dt = -7.40(±0.43) × 10 -8 d • yr -1 on a long-time scale, which may be due to the mass and angular momentum loss from the system. Additionally, a probable cyclic variation has been identified for the period of V367 Gem, which may be caused by the third body.

    Keywords: Eclipsing binary, ALGOL, Light curve, Period analysis, evolution

    Received: 18 Sep 2024; Accepted: 03 Dec 2024.

    Copyright: © 2024 Tian, Jiang, Wang and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Xiao-Man Tian, Shandong Jiaotong University, Jinan, China

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