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arXiv 0904.4502astro-ph.CO
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Haro 11主星系的深V和K波段测光

Deep V and K band photometry of the host galaxy of Haro 11

Genoveva Micheva, Erik Zackrisson, Göran Östlin, Nils Bergvall

摘要:

先前对Haro 11的宿主星系的研究表明,它具有V-K=4.2+-0.8的极端红色,这与任何具有合理金属丰度的正常恒星星族都不一致。我们目前最深的V和K波段数据的蓝色紧凑星系(BCG)哈罗11,并得出一个新的V-K颜色的主机。我们的新数据表明,V-K=2.3+-0.2的值要适中得多,这与其他几种BCGs测量的V-K颜色在同一范围内。新的哈罗11颜色并不是异常的红色,可以归因于一个旧的贫金属恒星星族与萨尔彼得初始质量函数。

英文摘要:

Previous studies of the host galaxy of Haro 11 have suggested an extreme red color of V-K=4.2+-0.8 which cannot be reconciled with any normal stellar population of reasonable metallicity. We present the deepest V and K band data to date of the blue compact galaxy (BCG) Haro 11 and derive a new V-K color for the host. Our new data suggest a much more modest value of V-K=2.3+-0.2, which is in the same range as V-K colors measured for several other BCGs. The new Haro 11 color is not abnormally red and can be attributed to an old metal-poor stellar population with a Salpeter initial mass function.

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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