Subsystems of the Galactic halo, their structures and compositions.

Details Subsystems of the Galactic halo, their structures and compositions. Subsystems of the Galactic halo, their structures and compositions.

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002oap....15...52m&link_type=abstract

Odessa Astronomical Publications, v. 15, p. 52-60.

Astronomy and Astrophysics

Astronomy

Globular Clusters: General, Galaxy: Abundances, Galaxy: Halo

Scientific paper

It is shown that general populations of globular clusters and metal-poor field stars are components at least of three subsystems occupying different volumes in the Galaxy. The thick disk and proto-disk subsystems are genetically associated with the Galaxy. The age distributions of these two subsystems do not overlap. It is argued that heavy-element enrichment and the collapse of the proto-galactic medium occurred mainly in the period between the formation of the proto-disk halo and thick disk subsystems. The largest third subsystem has no metallicity gradient, most of its objects have retrograde motion in the Galaxy, some of them have unusually low content of a-elements, and their ages are comparatively low in average, supporting the hypothesis that the objects in this subsystem had an extragalactic origin.

Affiliated with

Also associated with

No associations

Rating

Subsystems of the Galactic halo, their structures and compositions. 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 Subsystems of the Galactic halo, their structures and compositions., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subsystems of the Galactic halo, their structures and compositions. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1308080