The Substructure of the Local Group

Details The Substructure of the Local Group The Substructure of the Local Group

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.201..243g&link_type=abstract

Astrophysics and Space Science, Volume 201, Issue 2, pp.243-248

Astronomy and Astrophysics

Astrophysics

9

Scientific paper

The subclustering within the Local Group is studied by means of the recently developed treediagram technique, enabling one to establish substructures of different boundness. Thirty-two galaxies from 39 listed are shown to form an interacting system which includes Milky Way and M31 giant spirals; we define the Local Group as that interacting system only. Second-level boundness indicates two clear subsystems, influenced by Milky Way and that of M31. The search of systems bound stronger, specifies several pair galaxies of similar morphology.

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