Резюме:

Here, I present the photometric and spectroscopic analysis of a set of chemically peculiar pulsating variables discovered from ARIES Nainital. For the asteroseismic study of these stars, ground based photometric, high-resolution spectroscopic and spectro-polarimetric data were obtained from six telescopes located at different parts of the globe. We have also used the space based observations from Kepler to probe the interior of few type of pulsating variables. These observations are used to derive the various astrophysical parameters that help us in knowing the their evolutionary status. Finally, I will present the instrumental design of a time-series CCD photometer for the side port of the 3.6 m telescope at Devasthal (ARIES) to study the asteroseismic investigation of the pulsating variables and the transient sources.