Browsing by Author "Ojha, Devendra"

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    Faint star count and the milky way structure
    (2015-01-25) Ojha, Devendra
    The milky way galaxy offers a unique opportunity for testing theories of galaxy formation and evolution. I discuss how large surveys, both photometric and astrometric, of galactic stars are the keystones of investigation in to such fundamental problems as the merging history and future of galaxy. This work features a sample survey plan to produce probes of stellar populations in the milky way. Objectives of this work are to trace the fine structure of our galaxy through the statistical study of the stellar distribution according to their luminosity, colors and proper motions. The work has two step: first acquiring a new photometric and astrometric sample survey in various galactic direction; secondly analyzing data using a model of population synthesis and determining the properties of population in the galaxy and constraints on the scenario of formation and evolution.
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    The thick disc of the galaxy: Sequel of merging event
    (2015-01-25) Robin, A.C.; Haywood, Misha; Creze, Michel; Ojha, Devendra; Bienayme, Olivier