Assessment !! need help about star life cycle (1 Viewer)

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Q: Discuss which electro-magnetic wavebands it is observed at and why, with respect to the information obtained at different wavebands

Pre-main sequence star
main sequence star
red giant
white dwarf
supernova
neutronstar
blackhole
quasars

Ps. i got no idea about wavebands from each star, it's not in the text book : (

and also i want to know what is the energy source of
neutronstar
blackhole
quasars

thank for help : )

 

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