TY  - GEN
AU  - Sayeda Mostafa Amin Shabaan
AU  - Mohamed Abdelaziz Rassem , 
AU  - Mohamed Adel Sharaf , 
AU  - Mohamed Samir Aboelazm , 
TI  - Study of Period Changes and Light Curve Analysis of Selected Close Binaries / 
PY  - 2006///
CY  - Cairo : 
PB  - Sayeda Mostafa Amin Shabaan , 
KW  - Close Binaries
KW  - Light Curve
KW  - Period Changes
N1  - Thesis (Ph.D.) - Cairo University - Faculty Of Science - Department Of Astronomy and Meteorology; Issued also as CD
N2  - Binary stars are important for many reasons They provide valuable mass , radius and luminosity data of the stars The determination of the orbital parameters as well as the studying of the causes that are responsible for the observed change in orbital periods of binary systems may be considered of the most important tools for understanding the evolution and the interior structure of the stars
ER  -