The Effect of Environment on Star Formation Activity and Morphology at 0.5 ≤ z ≤ 2.5 in CANDELS
The Effect of Environment on Star Formation Activity and Morphology at 0.5 ≤ z ≤ 2.5 in CANDELS
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CANDELS中0.5≤z≤2.5时环境对恒星形成活动和形态的影响
DOI：
10.3847/1538-4357/ac1ce0
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Shuang Liu
中科院分区：
文献类型：
--
作者：
Yizhou Gu;Guanwen Fang;Qirong Yuan;Shiying Lu;Shuang Liu
为了探索环境对恒星形成和高红移星系形态转化的影响，我们提出了一种在贝叶斯概率框架下使用密度估计器的局部化星系超密度的稳健估计。在0.51010.8Me的环境过密度图上，环境猝灭的影响在z∼2.5时仍然很显著。SFG和QGS的S指数和有效半径的分布没有明显的环境依赖性。环境的主要作用可能是控制静止部分。形态参数主要与恒星形成状态有关。静止分数和S指数随恒星质量变化趋势的相似性表明，形态转变伴随着恒星形成猝灭。
To explore the effect of environment on star formation and the morphological transformation of high-redshift galaxies, we present a robust estimation of localized galaxy overdensity using a density estimator within the Bayesian probability framework. The maps of environmental overdensity at 0.5 1010.8Me), the effect of environmental quenching is still significant up to z ∼ 2.5. No significant environmental dependence is found in the distributions of Sérsic index and effective radius for SFGs and QGs separately. The primary role of environment might be to control the quiescent fraction. And the morphological parameters are primarily connected with star formation status. The similarity in the trends of quiescent fraction and Sérsic index along with stellar mass indicates that morphological transformation is accompanied by star formation quenching.