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arXiv 1001.5271astro-ph.CO
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活动星系核/星暴星系NGC7582的恒星星族

The stellar populations of the AGN/Starburst galaxy NGC7582

T. V. Ricci, J. E. Steiner, R. B. Menezes, A. Garcia-Rissmann, R. Cid Fernandes

摘要:

NGC 7582被定义为星暴/活动星系核星系,因为它的光学和X射线光谱显示了这两种特征。在这项工作中,我们展示了一个恒星星族建模与双子座南望远镜的数据立方体的结果。我们发现,视场中$\sim$ 90%的光是由年龄不到10亿年的恒星发出的。一次强烈的爆发发生在大约$\sim$ 600万年前,其金属丰度接近太阳。我们还发现了一个沃尔夫-拉叶星系团。

英文摘要:

NGC 7582 is defined as a Starburst/AGN galaxy, since its optical and X-Ray spectra reveal both characteristics. In this work, we show the results of a stellar population modeling in a datacube taken with the Gemini South telescope. We found that $\sim$ 90% of the light in the field of view is emitted by stars that are less than 1 billion years old. A strong burst occurred about $\sim$ 6 million years ago and has nearly solar metallicity. We also found a Wolf-Rayet cluster.

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