论文标题
穆斯的天线中的狼射线星星
Wolf-Rayet stars in the Antennae unveiled by MUSE
论文作者
论文摘要
我们介绍了非常大的望远镜（VLT）多单位光谱探索器（MUSE）的分析，以18.1 MPC的距离为18.1 MPC的相互作用星系NGC 4038/39（又称天线）。最多有38个年轻的恒星形成综合体，并揭幕了狼射线（WR）恒星的明显贡献。我们将公开可用的银河WR恒星模板与可用的光度灭绝测量结果结合使用，以基于其几乎太阳氧的丰度来量化和分类每个恒星形成区域中的WR种群。天线中WR星的总估计数量为4053 $ \ pm $ 84，其中有2021美元$ \ pm $ 60 wnl和2032 $ \ pm $ 59 wc-types。我们的分析表明，全球WC与WN型比率为1.01 $ \ pm $ 0.04，这与最新的BPASS恒星种群合成模型中单星进化场景的预测一致。
We present the analysis of archival Very Large Telescope (VLT) Multi Unit Spectroscopic Explorer (MUSE) observations of the interacting galaxies NGC 4038/39 (a.k.a. the Antennae) at a distance of 18.1 Mpc. Up to 38 young star-forming complexes with evident contribution from Wolf-Rayet (WR) stars are unveiled. We use publicly available templates of Galactic WR stars in conjunction with available photometric extinction measurements to quantify and classify the WR population in each star-forming region, on the basis of its nearly Solar oxygen abundance. The total estimated number of WR stars in the Antennae is 4053 $\pm$ 84, of which there are 2021 $\pm$ 60 WNL and 2032 $\pm$ 59 WC-types. Our analysis suggests a global WC to WN-type ratio of 1.01 $\pm$ 0.04, which is consistent with the predictions of the single star evolutionary scenario in the most recent BPASS stellar population synthesis models.
