Aarseth`s NBODY 1 code is used to study the stability of the quintet system of DW Draconis postulated by Abhyankar & Panchatsaram (1984). It is found that the observed (O - C) curve based on the ephemeris by Tremko & Kreiner ...

Photoelectric observations of the Algol-type eclipsing binary R Canis Majoris during three consequtive observing seasons of 1979-82 gave a total of ten primary minima in each of the V and B passbands and nine in the U ...

Photometric elements of TT Aur are derived from the UBV observations of the star during 1973-77. The system is found to be detached but quite close. Absolute dimensions are obtained on the basis of the spectroscopic element ...

Starting from the basic concepts, the role played by multiple scattering in modifying the intensity and polarization of radiation incident on a planetary atmosphere is brought out. Formation of spectral lines in such an ...

The photoelectric times of minima, available for the eclipsing binaries KO Aql, V566 Oph, AH Vir, AG Vir, 44i Boo B, RT And , SV Cam, Tv Cas, AT Lac and U Peg have been analysed to study their orbital periods. KO Aqi, V566 ...

New spectroscopic orbital elements of two short period doublelined spectroscopic eclipsing binaries HR 3009 and HR 3335 are presented