What is the?

Question

What is the temperature of a star at the point of its birth, i.e. origination, and how far does it rise, or can rise to maximum? thanks.

Answer 1

O-type stars (the hottest and bluest), have a temperature range around 30,000 Kelvins. However, the hottest star known is an O-type white dwarf at the center of the nebula NGC 2440 (211,000 K or 380,000 K).

The core of the star (not the surface) must reach about 10 billion Kelvins . This the temperature at which hydrogen atoms will fuse to make helium.

When a giant star dies in the form of a supernova, it reaches an incredibly high temperature, which fuse atoms to make elements heavier than iron up to uranium.

Answer 2

There are countless answers that are more or less right to that question. Basically, a collapsing gas cloud becomes a star when it gets hot enough for nuclear fusion to start, which is millions of degrees. But the surface of the new star never gets that hot, only thousands of degrees. It varies depending on the mass of the star, with smaller ones being cooler and larger ones being hotter.