Write the nuclear equation for the fusion of two H-2 atoms to form He-3 and one neutron.
Stellar Evolution Low Mass Stars Zero Age Main Sequence o Fusion begins o Main sequence life begins o Initial Mass determines future luminosity and temperature Stellar Sizes Red Dwarf o 1/25 – 1/10 M sun Low Mass o ¼ - 4 M sun Intermediate Mass o 4 – 25 M sun High Mass o 25 – 100+ M sun Not Now, Not Ever Brown Dwarf o Not a star – mass is too low for fusion ~50 Jupiter masses Low mass = Low pressure = Low core temp o Will “shine” in infrared Heat released from friction and cooling Does not generate its own energy Red Dwarf 0.08 M sun o M-type