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<p>We investigate the magnetic field and other physical properties of the star HD 149438 ( τ Sco). The analysis shows that this object exhibits all the key characteristics typical of other known magnetic O-type stars. Furthermore, all magnetic O-type stars display properties closely resembling those of SrCrEu + Si + He-w + He-r peculiar stars, suggesting a common origin and evolutionary pathway for these objects. The results also indicate that the hypotheses proposed in the literature (that magnetic stars originate from close binary systems) are not supported by observational evidence.</p>

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Special Properties of Magnetic O-Type Star HD149438

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • Yu. V. Glagolevskij

摘要

We investigate the magnetic field and other physical properties of the star HD 149438 ( τ Sco). The analysis shows that this object exhibits all the key characteristics typical of other known magnetic O-type stars. Furthermore, all magnetic O-type stars display properties closely resembling those of SrCrEu + Si + He-w + He-r peculiar stars, suggesting a common origin and evolutionary pathway for these objects. The results also indicate that the hypotheses proposed in the literature (that magnetic stars originate from close binary systems) are not supported by observational evidence.