论文标题

AGN在地平线模拟中ETG的结构,运动学和演变的作用

The role of AGN on the structure, kinematics and evolution of ETGs in the Horizon simulations

论文作者

Rosito, M. S., Pedrosa, S. E., Tissera, P. B., Chisari, N. E., Dominguez-Tenreiro, R., Dubois, Y., Peirani, S., Devriendt, J., Pichon, C., Slyz, A.

论文摘要

反馈过程在星系中恒星形成(SF)活性的调节中起着基本作用,尤其是在lambda CDM模型的观察和数值研究中,在早期型星系(ETG)的淬火中起着基本作用。在z = 0时,ETG表现出众所周知的基本缩放关系,但是它们与塑造ETG进化的物理过程之间的联系仍然未知。这项工作旨在研究由于主动银河核(AGN)的积极反馈(AGN)对ETG的形成和进化的限制对AGN反馈的质量(FLATER的影响)(flage)的影响(AGN)的影响(AGN)的影响(表面密度)以及跨FP的形态,运动学和出色的年龄。Horizo​​n-agn和Horizo​​n-NoAGN宇宙学水动力学模拟进行了相同的初始条件,包括相同的物理过程,除了在前者中激活AGN反馈。 We select a sample of central ETGs from both simulations using the same criteria and exhaustively study their SF activity, kinematics, and scaling relations for z <= 3. We find that Horizo​​n-AGN ETGs identified at z = 0 follow the observed fundamental scaling relations (mass-plane, FP, mass-size relation) and qualitatively reproduce kinematic features albeit conserving a rotational inner component with a mass fraction regulated by AGN反馈。似乎需要AGN反馈来重现观测工程报告的自旋参数分布和质量大小关系(具有更大的恒星种群(SP),较大的尺寸和较慢的旋转器)中的双兴趣分布。我们研究了与红移的基本关系的演变,发现了。

Feedback processes play a fundamental role in the regulation of the star formation (SF) activity in galaxies and, in particular, in the quenching of early-type galaxies (ETGs) as has been inferred by observational and numerical studies of Lambda CDM models. At z = 0, ETGs exhibit well-known fundamental scaling relations, but the connection between them and the physical processes shaping ETG evolution remains unknown.This work aims at studying the impact of the energetic feedback due to active galactic nuclei (AGN) on the formation and evolution of ETGs.We focus on assessing the impact of AGN feedback on the evolution of the mass-plane and the fundamental plane (FP, defined by using mass surface density) as well as on morphology, kinematics, and stellar age across the FP.The Horizon-AGN and Horizon-noAGN cosmological hydrodynamical simulations were performed with identical initial conditions and including the same physical processes except for the activation of the AGN feedback in the former. We select a sample of central ETGs from both simulations using the same criteria and exhaustively study their SF activity, kinematics, and scaling relations for z <= 3. We find that Horizon-AGN ETGs identified at z = 0 follow the observed fundamental scaling relations (mass-plane, FP, mass-size relation) and qualitatively reproduce kinematic features albeit conserving a rotational inner component with a mass fraction regulated by the AGN feedback. AGN feedback seems to be required to reproduce the bimodality in the spin parameter distribution reported by observational works and the mass-size relation (with more massive galaxies having older stellar populations (SPs), larger sizes, and being slower rotators). We study the evolution of the fundamental relations with redshift, finding .Abridged

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