Globular Clusters around Galaxies in Groups
天体物理学
2009-11-06 v1
摘要
We have obtained deep photometry of NGC 1199 (in HCG 22) and NGC 6868 (in the Telescopium group). Both galaxies are the optically brightest galaxies of their groups. Our analysis of B and R images taken with the Keck II and the VLT/ESO telescopes, detected a population of globular clusters around both galaxies, with total specific frequencies S_N=1.7\pm0.6 for NGC 1199 and S_N = 1.3\pm0.6 for NGC 6868. The color distributions of the globular cluster systems shows bimodal peaks centered at (B-R)_0 = 1.13\pm0.10 and 1.42\pm0.10 (NGC 1199) and (B-R)_0=1.12\pm0.10 and 1.42\pm0.10 (NGC 6868).
引用
@article{arxiv.astro-ph/0107364,
title = {Globular Clusters around Galaxies in Groups},
author = {C. Da Rocha and C. Mendes de Oliveira and M. Bolte and B. L. Ziegler and T. H. Puzia},
journal= {arXiv preprint arXiv:astro-ph/0107364},
year = {2009}
}
备注
3 pages, 1 figure. To appear in the proceedings of IAU Symp. 207, "Extragalactic Star Clusters", eds. E. Grebel, D. Geisler, D. Minniti