SIMBAD references

1998AJ....116.1314E - Astron. J., 116, 1314-1322 (1998/September-0)

The Scorpius OB2 complex.

EGGEN O.J.

Abstract (from CDS):

The Sco OB2 complex is a member of the Local Association. The association contains pre-main-sequence stars in addition to objects some 3x107 yr old. If it is assumed that stars in wide binaries are coeval, then the He-weak variables in the supercluster are pre-main-sequence, elevated above that sequence by an amount similar to that of the 3x107 yr old, normal stars but contracting toward the sequence, not evolving from it. The apparent great depth of the association is probably a result of some foreground supercluster members, superposed on Sco OB2, and a rift in the absorption cloud between Scorpius and Ophiuchus. The adjoining Chamaeleon complex also appears to be a member of the supercluster.

Abstract Copyright:

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: Scorpius OB2

Simbad objects: 102

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