Dudley Observatory, American Astronomical Society, American Institute of Physics · New York [etc.] American Institute of Physics [etc.] · leaf 235
h is less dense than the upper, theseencircling streams give a horse-shoe-like outline to thisrather conspicuous central nebulosity ; they also form theouter boundary of the lanes which Lord Ilossr, first ob-served, the inner boundary being formed by the upperpart of the central figure S. The… … The star-like masses in this cluster are probably ofvarious shapes and have various velocities of axial rota-tion; this seems to be indicated by the variations inbrightness which some of these objects are known toundergo. If two dot tracings of the figure are made (the distancesbetween the dots…
Astronomy
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