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arXiv 2205.06229astro-ph.SR
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大陵五C的光谱分类

Spectral Classification of Algol C

Megan G. Frank, David G. Whelan, Jessica C. Junginger

摘要:

大陵五C是大陵五三星系中的第三颗恒星,它的光谱分类长期以来一直是一个不确定的问题。有充分的理由怀疑它应该是一颗金属线A型恒星,特别是一项研究表明确实如此,但进一步的研究对这一评估提出了质疑。我们利用一种简单的光谱相减方法,在主食和主食的光谱之间,在没有最亮恒星的情况下,揭示了大陵五C的光。我们得到的光谱是匹配的F1 V光谱标准,并没有证据表明金属线光谱异常。我们注意到,这一分类与最近对该来源的丰度测定相匹配。

英文摘要:

The spectral classification of Algol C, the third star in the Algol triple system, has long been a matter of some uncertainty. There is good reason to suspect that it should be a metallic-line A-type star, and one study in particular showed that this was so, but further studies have cast doubt on that assessment. We utilized a simple spectral subtraction method between spectra taken in and out of primary eclipse to reveal the light of Algol C in the absence of the light from the brightest star. Our resultant spectrum is well-matched to an F1 V spectroscopic standard and shows no evidence of metallic-line spectral anomalies. We note that this classification matches recent abundance determinations for this source.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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