On the OB1 Stars Distribution Law Around the Nuclei of the OAssociations
Abstract
All known Oassociations have been transformed into a single synthetic "association" with one nucleus by the method suggested earlier. The stellar density distribution for OB0.5 and OB1 stars, then, has been derived for this synthetic association. The density distribution is presented, as the first approximation, by the law d(r)~r^3, where d(r) is the stellar density and r  the distance from the nucleus. This law is a good approximation, however, only in the average sense. In more precise approximation the stellar density distribution cannot be presented by one single law r^n, with constant n. The exponent n, in fact, increases with the distance r. The stellar density distribution around the nuclei of Oassociations, therefore, is presented better by the "hyperbolic" law: (lgd)^2=(2lgra)^2b^2, where a and b are constants.
 Publication:

Communications of the Byurakan Astrophysical Observatory
 Pub Date:
 1963
 Bibcode:
 1963CoBAO..33...41M