Dr T Lloyd Evans has continued his investigation of stars in anomalous positions in the colour-magnitude diagram of the ... This is an 07 + 07 binary in the open cluster NGC 6383. ... Variations were found in the apparent centre of mass velocity of the system which could be due either to the presence of a third component or to variations in the circumstellar gas. ... Dr Lloyd Evans made further spectroscopic and photometric observations of HD 158393 an important member of the class.
|Title||:||South African Astronomical Observatory Report for the Year Ending...|