论文标题
$ z <0.1 $的内而外组装的星系的属性
The properties of inside-out assembled galaxies at $z<0.1$
论文作者
论文摘要
在这项工作中，我们研究了显示内外组装的星系的特性（我们称之为内而外的组装星系； IOAGS），其主要目的是更好地了解它们的特性和形态转化。我们分析了斯隆数字天空调查（SDSS）数据8（DR8）中的星系样本，其恒星群体在$ \ log m _ {\ star} = 10.73-11.03 $ $ $ m _ {\ odot {}} $ in $ z <0.1 $中，并分析了他们的位置，并分析了他们的位置。我们发现IOAG具有不同的光谱特性，其中大多数被分类为AGN或复合材料。我们发现，我们的大多数来源位于SFR-Stellar质量图中的恒星形成的主要序列下方，以及在色 - 恒星质量图中的绿色谷或红色序列中。我们认为，IOAGS似乎与星系从星形形成到静止的过渡区域，从蓝云到红色序列和/或最近淬火的星系。
In this work, we study the properties of galaxies that are showing the inside-out assembly (which we call inside-out assembled galaxies; IOAGs), with the main aim to understand better their properties and morphological transformation. We analysed a sample of galaxies from the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), with stellar masses in the range $\log M_{\star}=10.73-11.03$ $M_{\odot{}}$ at $z < 0.1$, and analyze their location in the stellar mass-SFR and the color-stellar mass diagram. We found that IOAGs have different spectroscopic properties, most of them being classified either as AGN or composite. We found that the majority of our sources are located below the main sequence of star formation in the SFR-stellar mass diagram, and in the green valley or red sequence in the color-stellar mass diagram. We argue that IOAGs seem to correspond to the transition area where the galaxies are moving from star-forming to quiescent, and from the blue cloud to the red sequence and/or to recently quenched galaxies.
