Evolução estelar: do colapso de uma nuvem de gás ao nascimento de uma protoestrela

Abstract

The knowledge of the laws and postulates of Physics is a fundamental tool for studies in Astrophysics, as it provides to perform analogous experiments, to theorize and to describe some observational phenomena with a good precision to what actually happens in the Universe; both are around the science known as Astronomy that in the primordium of the times unleashed the main questions, observations and theories so that we arrived at the present advances, giving rise also to what we know like Physics in itself. This work was developed in a bibliographical form and aims to bring together the introductory concepts about fluid hydrodynamics and thermodynamics,inordertoestablishthenecessarysubsidiesfortheunderstanding of the phenomena present in the formation of a protoestrela, describing some of the main equations related to this process ; the equation of state that delineates the formation of a star has also been approached superficially. Finally we present some characteristics of interstellar clouds that are directly linked to birth places and star evolution, we describe in a qualitative and quantitative way one of the main aspects responsible for the beginning of the process of birth of a star, starting from the gravitational collapse and fragmentation of a molecular cloud to its proto-sterolar state, highlighting the mass of Jeans that delimits the instability of the cloud.