Stellar clumps within the corona in the open cluster M 67

Details Stellar clumps within the corona in the open cluster M 67 Stellar clumps within the corona in the open cluster M 67

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...334..552c&link_type=abstract

Astronomy and Astrophysics, v.334, p.552-557 (1998)

Astronomy and Astrophysics

Astrophysics

6

Stars: Formation, Open Clusters And Associations: Individual: M 67

Scientific paper

Several star clumps are detected inside the low-density extended corona of the open cluster M 67 with the help of the method ``the distances to nearest neighbour analysis'', elaborated earlier for analysis of galaxy distributions. The groups include from 5 to 11 stars and have mean sizes from 0.5 to 1.2 pc. We check the reality of their existence by statistical estimates based on kinematical data analysis. It is shown that at least one clump is not a random star density fluctuation. The question of the origin of these substructures remains open.

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