The relationship of the mass and the observed galactocentric distance R -- (a), and that of the mass and the total dissipation velocity n taken from Gnedin, Ostriker (1997) -- (b). The dotted line in diagram (a) shows the "cone of survival" according to the paper by Surdin and Arkhipova (1998). The thin lines are the stright lines of the regression in the regions inside and outside the solar orbit radius, while r are the corresponding correlation coefficients. The open triangles are for the clusters lying below the dotted line in diagram (b). The values of n in diagram (b) are expressed in units reverse to Hubble time adopted for convenience to be equal to 10 billion years. The open symbols (circles and triangles) denote the clusters lying farther than 15 kpc from the centre of the Galaxy. The solid line is a regression stright line for the main sequence of clusters, and the dotted line parallel to it separates the sequence of clusters of anomalously small mass shown by open triangles. Their names are beside them.discussion in the text | next figure