The Fornax3D project: Tracing the assembly history of the cluster from the kinematic and line-strength maps
The Fornax3D project: Tracing the assembly history of the cluster from the kinematic and line-strength maps
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Fornax3D 项目：从运动学和线强度图追踪集群的装配历史
DOI：
10.1051/0004-6361/201935721
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发表时间：
2019
影响因子：
6.5
通讯作者：
S. Viaene
中科院分区：
文献类型：
--
作者：
E. Iodice;M. Sarzi;A. Bittner;L. Coccato;L. Costantin;E. Corsini;G. Ven;P. Zeeuw;J. Falcón;D. Gadotti;M. Lyubenova;I. Martín;R. McDermid;B. Nedelchev;F. Pinna;A. Pizzella;M. Spavone;S. Viaene
使用甚大望远镜上的多单元光谱探测器对天炉座星团维里半径内的 31 个最亮星系（mB ≤ 15 星等）进行了从中心到外围的观测。这些观测结果提供了视线运动学、恒星线强度、21 个早型星系达到 2-3 Re 的电离气体和 10 个晚型星系达到 1-2 Re 的电离气体的详细高分辨率图。大多数星系都是规则的旋转体，其中八个拥有运动学上不同的核心。只有两个星系是慢速旋转的。给出了 0.5 Re 内明亮中心区域和星系外围的平均年龄、总金属丰度和 [Mg/Fe] 丰度比。在 13 个星系中检测到了延长发射线气体，其中大多数是具有广泛恒星形成的晚型天体。测量的结构特性根据星系在星团投影相空间中的位置进行分析。这表明天炉座星团似乎由维里半径内的三个主要星系群组成：旧核心；与当地大尺度结构一致的星系团，在核心形成后不久就被吸积；以及最近坠落的一组星系。
The 31 brightest galaxies (mB ≤ 15 mag) inside the virial radius of the Fornax cluster were observed from the centres to the outskirts with the Multi Unit Spectroscopic Explorer on the Very Large Telescope. These observations provide detailed high-resolution maps of the line-of-sight kinematics, line strengths of the stars, ionised gas reaching 2–3 Re for 21 early-type galaxies, and 1–2 Re for 10 late-type galaxies. The majority of the galaxies are regular rotators, with eight hosting a kinematically distinct core. Only two galaxies are slow rotators. The mean age, total metallicity, and [Mg/Fe] abundance ratio in the bright central region inside 0.5 Re and in the galaxy outskirts are presented. Extended emission-line gas is detected in 13 galaxies, most of them are late-type objects with wide-spread star formation. The measured structural properties are analysed in relation to the galaxies’ position in the projected phase space of the cluster. This shows that the Fornax cluster appears to consist of three main groups of galaxies inside the virial radius: the old core; a clump of galaxies, which is aligned with the local large-scale structure and was accreted soon after the formation of the core; and a group of galaxies that fell in more recently.
影响因子：
4.8
作者：
Song Huang;A. Leauthaud;J. Greene;K. Bundy;Yen-Ting Lin;Masayuki Tanaka;R. Mandelbaum;S. Miyazaki;Y. Komiyama
通讯作者：
Song Huang;A. Leauthaud;J. Greene;K. Bundy;Yen-Ting Lin;Masayuki Tanaka;R. Mandelbaum;S. Miyazaki;Y. Komiyama
影响因子：
4.9
作者：
Bundy, Kevin;Bershady, Matthew A.;Zhang, Kai
通讯作者：
Zhang, Kai
影响因子：
4.8
作者：
P. Duc;J. Cuillandre;Emin Karabal;M. Cappellari;K. Alatalo;L. Blitz;F. Bournaud;M. Bureau;A. Croc
通讯作者：
P. Duc;J. Cuillandre;Emin Karabal;M. Cappellari;K. Alatalo;L. Blitz;F. Bournaud;M. Bureau;A. Croc