Numerous groundbreaking discoveries have been made in exoplanet science over the past decade. Recent exoplanet search surveys have provided compelling evidence that planets are exceedingly common, with the majority of ...

Context: Over 5,000 exoplanets have been discovered to date, yet our knowledge of their atmospheres is still quite limited, and we have not yet identified any truly habitable exoplanets. It is the high time to characterize the ...

Galactic Globular clusters (GGCs) are old stellar systems (age ∼ 12 Gyr) consisting typically of about 104-106 gravitationally bound stars. This makes them excellent astrophysical laboratories to study stellar evolution, ...

The cold gas accretion and merging of galaxies are two important physical mechanisms which contribute to the building up of galaxies at various epochs of the universe. Thus, it is crucial to understand the role of gas ...

Active Galactic Nuclei (AGN), amongst the most luminous sources in the Universe (L = 1042 − 1046 erg s −1 ), emit radiation over the entire electromagnetic band. Though AGN are known to be powered by the accretion of matter ...

Accurate wavelength calibration is an important factor for any measure ment with high resolution spectrographs. Stellar spectrum comprises of dis crete absorption or emission lines whose position is precisely determined ...

Context: Starting from the first discovery of extrasolar planet or exoplanet around a sun-like star, more than 5,000 confirmed exoplanets have been detected till now. But still we have very less information and interpretations ...

The most challenging limitation in the transit photometry method arises from the noises in the photometric signal. In particular, the ground-based telescopes are heavily affected by the noise due to the perturbation in ...

After more than six decades of the pioneering work of Burbidge, Burbidge, Fowler and Hoyle (1957), which first suggested the production channels and the evolution of neutron-capture elements, many details still remain ...