期刊
ASTROPHYSICAL JOURNAL
卷 605, 期 2, 页码 677-688出版社
UNIV CHICAGO PRESS
DOI: 10.1086/381746
关键词
galaxies : clusters : individual (MS 2053-04, MS 1054-03); galaxies : evolution; galaxies : fundamental parameters; galaxies : high-redshift; galaxies : kinematics and dynamics
We study the fundamental plane relation in high-redshift clusters using a sample of 26 galaxies in MS 2053-04 (z + 0.583) and 22 galaxies in MS 1054-03 (z = 0.83). The zero point and scatter are compared to results for lower redshift clusters in order to trace evolutionary effects. Furthermore, our large sample enables us to investigate correlations between residuals from the fundamental plane and other characteristics of the galaxies, such as color, Hbeta line strength, spatial distribution, and mass. The observed scatter of the early-type galaxies with sigma > 100 km s(-1) around the fundamental plane is 0.134 and 0.106 in log r(e) for MS 2053-04 and MS 1054-03, respectively. The residuals from the fundamental plane of MS 2053-04 are correlated with residuals from the Hbeta-sigma relation, suggesting that stellar populations are playing a role in shaping the fundamental plane. The measured evolution in log M/L is influenced by selection effects, as galaxies with lower M/L in the Johnson B-band enter a magnitude-limited sample more easily. When we select high-mass early-type galaxies to avoid this bias, we find log M/L-B similar to -0.47z and a formation redshift z(form) similar to 2.95, similar to earlier results.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据