CALIFA调查中的HII地区：目录介绍
HII regions in the CALIFA survey: I. Catalog presentation
摘要：
我们提出了一个新的目录的基础上的积分场谱（IFS）数据的扩展CALIFA和PISCO样品的HII区域。HII区域的选择基于两个假设：一个具有高对比度H $α$发射的星团结构和一个由年轻恒星组成的潜在恒星星族。该星表提供了对应于924个星系的26，408个独立区域的光谱信息，包括覆盖3745- 7200 A波长范围的51条发射线的通量强度和等效宽度。据我们所知，这是最大的HII区光谱特性目录。我们探索了一种新的方法来净化来自扩散电离气体贡献的发射线。估计该扩散气体校正以校正所考虑的光谱范围内的每个发射线。在修正了HII区目录的基础上，提出了经典诊断图的新分界线。最后，我们研究了HII区底层恒星星族的性质。发现除了电离区的物理条件外，星云的电离条件与恒星星族的性质有直接的关系。
英文摘要：
We present a new catalog of HII regions based on the integral field spectroscopy (IFS) data of the extended CALIFA and PISCO samples. The selection of HII regions was based on two assumptions: a clumpy structure with high contrast of H$α$ emission and an underlying stellar population comprising young stars. The catalog provides the spectroscopic information of 26,408 individual regions corresponding to 924 galaxies, including the flux intensities and equivalent widths of 51 emission lines covering the wavelength range between 3745-7200A. To our knowledge, this is the largest catalog of spectroscopic properties of HII regions. We explore a new approach to decontaminate the emission lines from diffuse ionized gas contribution. This diffuse gas correction was estimated to correct every emission line within the considered spectral range. With the catalog of HII regions corrected, new demarcation lines are proposed for the classical diagnostic diagrams. Finally, we study the properties of the underlying stellar populations of the HII regions. It was found that there is a direct relationship between the ionization conditions on the nebulae and the properties of stellar populations besides the physicals condition on the ionized regions.
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