We have developed a method for calculating the emission-line profiles from an expanding envelope. The method applies to an envelope where the emission intensity varies with latitude. Some typically illustrative cases are ...

Two photoelectric records of the occultation event on 10 March, 1977, obtained by two 102-cm-aperture telescopes, spaced 1500 km apart, are critically analyzed and indications of a complex structure of distribution of ...

Photoelectric colours and magnitudes have been determined for twenty-five stars considered to be members of the moving cluster in Perseus. A distance modulus of 6m.83, corresponding to a distance of 230 ps, has been derived. ...