STAR FORMATION HISTORIES OF BRIGHTEST CLUSTER GALAXIES WITH INTERMEDIATE CENTRAL AGES

被引：1
|
作者：
Umanzor, J. [1 ]
Talavera, M. L. [1 ]
机构：
[1] Univ Nacl Autonoma Honduras, Fac Ciencias Espaciales, Dept Astron & Astrofis, Edificio K1,Bulevar Suyapa, Tegucigalpa, Honduras
来源：
REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2021年 / 57卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
galaxies; clusters; general; elliptical and lenticular; cD; evolution; formation; star formation; STELLAR MASS GROWTH; DIGITAL SKY SURVEY; ATLAS(3D) PROJECT; SAURON PROJECT; RICH CLUSTERS; LUMINOSITY; ACCRETION; EVOLUTION; MERGERS; MEMBERS;
D O I：
10.22201/ia.01851101p.2021.57.02.11
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
This work is devoted to the study of the star formation histories (SFHs) of the brightest cluster galaxies (BCGs) with intermediate central ages (from 5 to 10 Gyr), to confirm if BCGs with these ages represent different accretion histories or simply a stochastic effect. The sample is composed of 6 BCGs with intermediate central ages and 3 BCGs with old central ages (> 12 Gyr) as comparison galaxies. The galaxies were observed with the integrated field spectrograph VIMOS installed in the Very Large Telescope (VLT). The SFHs were obtained with the full spectrum fitting technique using the star population code STARLIGHT. The BCGs of intermediate central age analyzed formed almost 100 % of their stars at z > 2 and their SFHs are similar to the SFHs of BCGs of old central ages and elliptical galaxies of similar mass (MDyn > 1011 Me); therefore, these BCGs do not represent different SFHs.
引用
收藏
页码：391 / 397
页数：7
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