Sentences with phrase «ionizing radiation from the stars»
«It's possible the black hole is creating winds that help the ionizing radiation from the stars escape.
https://www.sciencedaily.com/ Not exact matches
«The UV radiation from a massive star will ionize and heat up disks of gas surrounding nearby low - mass stars,» Bally says.
As more stars and galaxies formed, they eventually generated enough radiation to flip hydrogen from neutral, a state in which hydrogen's electrons are bound to their nucleus, to ionized, in which the electrons are set free to recombine at random.
The team used several hundred thousand compute hours at NERSC to produce a series of 2D and 3D simulations that helped them examine the role of dark matter halo photoevaporation — where energetic radiation ionizes gas and causes it to disperse away from the halo — played not just in the early formation of stars but also the assembly of later galaxies.
In follow - up observations from Kitt Peak National Observatory and the Lick Observatory, his team found 20 galaxies that had gas that was ionized by radiation from a quasar, rather than from the energy of star formation.
A widely accepted idea has described this phenomenon as: the strong radiation from the galactic center in which the supermassive black hole locates ionizes (* 1) the surrounding gas and affects even molecular gas that is the ingredient of star formation; the strong radiation activates (* 2) or suppresses (* 3) the star formation of galaxies.
This discovery refutes existing theories, indicating that ultraviolet radiation from the star would destroy molecular gas and dust, and bringing the first direct detection of ionized gas wind along with a supersonic jet and an accretion disk.
To maintain its ionization it requires about 80 % of the ionizing radiation from all OB stars in the Galaxy; this is presumably supplied by UV photons leaking from HII regions.