SIMBAD references

2000ApJ...535L..95S - Astrophys. J., 535, L95-L98 (2000/June-1)

Discovery of a subsystem of globular clusters in M31: possible evidence for a past merging event.


Abstract (from CDS):

We found a subsystem of globular clusters in M31 that appears to have a formation history separate from the rest. The member clusters of this subsystem, identified from their distinct distribution in the metallicity-distance diagram, (1) have a common medium metallicity range of -0.9<[Fe/H]←0.4, (2) have a line-of-sight velocity distribution with no significant projected rotational motion, and (3) are populated outside the inner subsystem of globular clusters of similar metallicity that shows a significant net rotational motion as a whole. We suggest that this subsystem of globular clusters was formed during a merging event of a dwarf galaxy that took place well after the initial collapse event when most of the globular clusters in M31 were formed.

Abstract Copyright:

Journal keyword(s): Galaxies: Individual: Messier Number: M31 - Galaxy: Globular Clusters: General

Simbad objects: 24

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