On the connection between radial systems of dark globules and stellar associations

We study the connection between radial systems of dark globules and stellar associations. It is shown that of the 17 systems of type 1 in Table 1 of 1] 16 radial systems are connected with known associations. A new association is found (missing from the catalogs) connected with the remaining system (System No. 2). Four systems of the six systems of type 2 (Table 2 of 1]) are connected with known associations. A new method of determining the distance to associations is proposed, using the mean linear thickness of dark globules of radial systems connected with these associations as the criterion for distance. Using this method we make the distance to the association Cyg OB 9 more precise and answer the question whether several radial systems belong to the corresponding stellar associations.Translated fromAstrofizika, Vol. 37, No. 4, 1994.The authors are grateful to Academician V. A. Ambartsumyan for constant attention to this work.