Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation

Details Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation

2005-06-13

arxiv.org/abs/astro-ph/0506289v1

Astron.J.130:1315-1323,2005

Astronomy and Astrophysics

Astrophysics

21 pages, 1 figure. Accepted to AJ

Scientific paper

10.1086/432717

We present the results of a meta-analysis of Keck spectra of extragalactic globular clusters (GCs) in a sample of eight galaxies, ranging from dwarfs to massive ellipticals. We infer ages for the metal-poor and metal-rich GCs in these galaxies through comparisons to Galactic GCs. Both subpopulations appear to be no younger than their Galactic counterparts, with ages ~> 10 Gyr. This is the largest sample of galaxies for which ages have been constrained spectroscopically. Our results support the formation of most GCs in massive galaxies at high redshift. We propose a scenario for the formation of GC subpopulations that synthesizes aspects of both accretion and in situ approaches in the context of galaxy formation through hierarchical merging.

Affiliated with

Also associated with

No associations

Rating

Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-225509