Astrophysics (index)about


(contracted mass of gas that will become a star)

A Protostar is an early stage in the development of a star, formed from a contracting giant Molecular Cloud and eventually (on the order of 10 million years) becoming a T-Tauri Star or other type of Pre-Main-Sequence Star. The protostar is heated by the release of gravitational energy as the gas contracts rather than by Fusion. It will eventually ignite fusion and become a Main Sequence Star.

(stars,evolution,star formation)

Referenced by:
Bipolar Outflow
Cold Mass Accretion (CMA)
Cooling Function
Debris Disk
Dense Core
Herschel Orion Protostar Survey (HOPS)
Herbig-Haro Object (HH)
Mass Fraction
Pre-Main-Sequence Star (PMS)
Protoplanetary Disk (PPD)
Star-Forming Region (SFR)
Snow Line
Stellar Core
Transitional Disk
Variable Star
Young Stellar Object (YSO)