AST201H1 Study Guide - Midterm Guide: Irregular Galaxy, Blueshift, Molecular Cloud

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AST201H1 Full Course Notes
AST201H1 Full Course Notes
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Iskender piyale-sheard ast201 m i dter m 2 study notes. Hydrostatic balance thermal pressure from heat generation pushes outward. Proton-proton fusion: two protons fuse and make a deuterium nucleus (1 proton and 1 neutron). This happens twice: the deuterium neucleusand a proton fuse to make a nucleus of helium-3 (2 protons, They can only interact via gravity and the strong nuclear force. They are not subject to the forces of electromagnetism. Hydrogen atons can only fuse in the sun"s core. Equilibrium in sun: drop in pressure, leads to a large decrease in fusion, this lowers the core pressure, the core contracts due to gravity and heats up, the fusion is restored to normal rate. Luminosity is the intrinsic brightness of an object. Stars are blackbodies : their colours are determined by their temperatures. Their colours are determined by the colour of light they emit most of. www. notesolution. com www. notesolution. com. Apparent brightness is related to the luminosity such that: