Approximately what temperature must the helium core of a Sun-like star reach to ignite helium fusion?
Answer
10^9 K
For stars similar to the Sun, contraction of the helium core continues until it reaches around $10^9 ext{ K}$, igniting helium fusion via the triple-alpha process.
Related Questions
What dynamic balance term describes the outward pressure balancing a star's gravity?What is the approximate minimum core temperature required for thermonuclear fusion to initiate in a celestial body?What objects fail to reach the necessary core temperature for hydrogen fusion?What specific temperature does the core of our average main sequence Sun reach?Which fusion reaction primarily powers stars below the Sun's mass?Which process generates a greater proportion of energy in stars exceeding about 1.2 solar masses?What results from the high temperature sensitivity of the CNO cycle in massive stars?Approximately what temperature must the helium core of a Sun-like star reach to ignite helium fusion?In Sun-like stars (up to about 1.5 times the Sun’s mass), what state does the helium core reach before ignition?In massive stars, what element is the core entirely composed of just before fusion stops catastrophically?What temperature can the interior of a core reach when collapsing to form a neutron star?