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首页> 外文期刊>Galaxies >The History Goes On: Century Long Study of Romano’s Star ?
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The History Goes On: Century Long Study of Romano’s Star ?

机译:历史还在继续:对罗马诺之星的悠久研究?

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GR 290 (M 33 V0532 = Romano’s Star) is a unique variable star in the M33 galaxy, which simultaneously displays variability typical for luminous blue variable (LBV) stars and physical parameters typical for nitrogen-rich Wolf-Rayet (WR) stars (WN). As of now, GR 290 is the first object which is confidently classified as a post-LBV star. In this paper, we outline the main results achieved from extensive photometric and spectroscopic observations of the star: the structure and chemical composition of its wind and its evolution over time, the systematic increase of the bolometric luminosity during the light maxima, the circumstellar environment. These results show that the current state of Romano’s Star constitutes a fundamental link in the evolutionary path of very massive stars.
机译:GR 290(M 33 V0532 =罗曼诺之星)是M33星系中唯一的可变恒星,它同时显示发光蓝色可变(LBV)恒星典型的变异性和富氮Wolf-Rayet(WR)恒星(WN )。到目前为止,GR 290是第一个被可靠地归类为LBV后恒星的天体。在本文中,我们概述了通过对恒星进行广泛的光度学和光谱学观察所获得的主要结果:恒星风的结构和化学成分及其随时间的演变,最大光强期间太阳辐射强度的系统性增加,星际环境。这些结果表明,罗曼诺星的当前状态是超大质量恒星演化路径中的基本纽带。

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