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A protostar is a very young star that is still gathering mass from its parent molecular cloud. It is the earliest phase in the process of stellar evolution. [ 1 ] . For a low-mass star (i.e. that of the Sun or lower), it lasts about 500,000 years. [ 2 ] .
Protostar is an early stage in the evolution of a star that usually grows to the point of beginning nuclear fusion and becoming a star by gathering mass. [1] . It is made of a contracting cloud of cold and dark interstellar medium (mostly hydrogen gas). Protostars has lower temperature than an ordinary star.
All stars are formed from collapsing clouds of gas and dust, often called nebulae or molecular clouds. Over the course of millions of years, these protostars settle down into a state of equilibrium, becoming what is known as a main-sequence star. Nuclear fusion powers a star for most of its existence.
As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products.
12 kwi 2024 · What is a Protostar? A protostar is a stage in the formation of a star where a dense cloud of gas and dust begins to collapse under its own gravity. This collapse triggers the process of nuclear fusion, which eventually leads to the birth of a new star.
Protostars are young developing stars that form from the gravitational collapse of molecular cloud cores. They are surrounded by protoplanetary disks made of gas and dust, which eventually give rise to planetary systems.
Protostars are low-mass or solar-type stars in the early stages of formation, characterized by complex chemical environments. They consist of a central protostar surrounded by an envelope of infalling cloud material.
