Definitions for "Protostar"
Related Terms:
Supernova, White dwarf, Red giant, Supernova remnant, Brown dwarf, Giant star, Supergiant, Hypernova, Stellar evolution, Wolf-rayet star, Black dwarf, Nova, Planetary nebula, Main sequence star, T tauri star, Main sequence, Red giant star, Stellar wind, Dwarf star, Neutron star, Interstellar medium, H-r diagram, Horizontal branch, Hertzsprung-russell diagram, Binary pulsar, Chandrasekhar limit, Star, Nebula, Arcturus, Giant molecular cloud, Crab nebula, Red dwarf, Population i, Sirius, Accretion disk, Rigel , Quasar, Interstellar, Helium flash, Binary stars, Cepheid, Stellar, Mass-luminosity relation, Halo, Population ii, Ring nebula, Red supergiant, Galaxy, Variable star
A dense body of gas that is collapsing inward because of gravitational forces and that may eventually become a star.
A star that is still forming and nuclear fusion has not yet begun.
The original material from which a star will develop when the hydrogen fusion process starts.
A star in the process of formation, specifically one that has entered the slow gravitational contraction phase.
The early stage in a star's formation before the onset of nuclear burning at the core of the star.
collapsing clump of dust and gas that will later become a star. The protostar is warm enough to produce a lot of infrared and some microwave radiation. Microwave energy is produced by the surrounding cocoon cloud.
a first stage of the star
a gas cloud that "shrinks" its way to becoming a star
an early stellar form collapsing under gravity
a newly forming star
a portion of a nebula that is about to form into a new star
a star nearing the red giant stage
a star which is glowing because of energy released by the gravitational infall of material (as opposed to nuclear reactions, which produce energy in the later stages of a star's life)
The early stage of forming a star.
A dense object at the center of a cloud core that will grow into a star.
Object that has condensed from the collapse of a molecular cloud and that radiates heat, warming up its surroundings.
A star in the process of forming.
Stage in star formation when the interior of a collapsing fragment of gas is sufficiently hot and dense that it becomes opaque to its own radiation. The protostar is the dense region at the center of the fragment. [More Info: Field Guide
A star that has not yet started core hydrogen burning.
an object in the process of becoming a star. Usually referred to a core or portion of a core in the end stages of collapse or contraction, before the onset of nuclear reactions (or, `burning) takes place.
Dense regions of molecular clouds where stars are forming.
The stage in a stars lifecycle where it has not yet reached the H-R diagram.
the result of the contraction of a nebula. A protostar is the point between a nebula and a main sequence star
stage in the life of a star which follows the gravitational contraction of the cloud of gas from which it originates and that precedes the start of the nuclear fusion reactions in its centre.
A star in its formative stages.
A Protostar is a stage in the development of a star and it is a period after clouds of hydrogen, helium and dust begin to contract and before the star reaches the main sequence.