A brief description of the sky survey project taken up with the 45 cm Schmidt telescope of the Vainu Bappu Observatory at Kavalur is given. Positions of 11 asteroids detected on plates taken during 1987 Feburary-March are reported

Precipitable water vapour is one of the variable atmospheric constituents and its short-term and seasonal variations may affect the infrared photometric observations. From the analysis of the measurements, made at Manora ...

The tidal interaction between a disk and a Plummer model spherical galaxy is studied, extending the impulsive approximation theory to disk galaxies. The fractional change in the internal energy and merger velocities for ...

The centre-to-limb behaviour of the residual intensities in the line wings of the Balmer, Paschen and Brackett series lines (alpha to delta) in three facular models at four wing points has been investigated with a view to ...

Integration of the radiative transfer equation, with the aberration and advection terms included, is described, assuming coherent and isotropic scattering. The operators of transmission and reflection derived in this paper ...

Observations of the occultation of the star SAO 158763 by Saturn's magnetospheric region around 19 Saturn radii on May 12, 1984 are compared with the observations by Mahra et al. (1985) of the same event. Certain disparities ...

Blue and red photographs of the solar corona obtained on February 16, 1980 with the Japal-Rangapur Observatory double polarigraph are analyzed, and calculations for the degree of polarization and the angle of the magnetic ...

The evidence for the triggering of star formation by shocks from expanding supernova shells is examined with special emphasis on the solar system. It is shown that the recently discovered isotopic anomalies, mainly in Ti, ...

Vibrational transition probabilities, namely Franck-Condon factors and average r centroids, have been evaluated using an approximate analytical method for the B-X system of the AIO molecule. RKRV potential energy curves ...