OBSERVATIONS AND LIGHT CURVE SOLUTIONS OF FOUR ULTRASHORT-PERIOD BINARIES

The paper presents light curve solutions of our observations of four new ultrashort-period eclipsing binaries with MS components.Two of them have periods almost at the upper gildan midnight limit (0.22 days) of the ultrashort-period binaries, while the periods of around 0.18 days of CSS J171508.5+350658 and CSS J214633.8+120016 are amongst the shor

The presence of supernumerary teeth in the premaxillary region may cause a variety of pathological effects.This study was carried out to determine the various aspects of supernumerary teeth in the premaxillary region, particularly the effects of the supernumerary teeth on the permanent incisors and surrounding tissues.Approximately 20 percent of th