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Protostar

(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 enter the Main Sequence.


(stars,stellar evolution,star formation)
http://en.wikipedia.org/wiki/Protostar

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

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