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arXiv 1502.00308astro-ph.SR
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M101中的大量恒星。III。亮星和变星的光谱和测光

The Massive Star Population in M101. III. Spectra and Photometry of the Luminous and Variable Stars

Skyler H. Grammer, Roberta M. Humphreys, Jill Gerke

摘要:

我们讨论中等分辨率光谱,测光,和光变曲线的31个最明亮的恒星和变量的巨螺旋M101。大多数是A到F型超巨星。我们提出了三个已知的“不规则蓝色变星”V2,V4和V9)的新光度学和光变曲线,并确定了一个新的候选者。它们的光谱和变化证实它们是LBV候选者,V9可能处于LBV样的最大光状态或喷发。

英文摘要:

We discuss moderate resolution spectra, multicolor photometry, and light curves of thirty-one of the most luminous stars and variables in the giant spiral M101. The majority are intermediate A to F-type supergiants. We present new photometry and light curves for three known "irregular blue variables" V2, V4 and V9) and identify a new candidate. Their spectra and variability confirm that they are LBV candidates and V9 may be in an LBV-like maximum light state or eruption.

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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