Studying the first generation of stars, galaxies and supermassive black holes as well as the epoch of reionization is one of the fundamental questions of modern
The spatial clustering of QSOs is an important measurable quantity which can be used to infer the properties of dark matter halos that host them.We construct a
The possibility to estimate ages and masses of Young Stellar Objects(YSOs) from their location in the Hertzsprung-Russell diagram(HRD) or a colormagnitude diagr