Pure white big T Tauri star, didn't this get corrected by Fdev?
- Thread starter glögg
- Start date
T-Tauris come in all colours and sizes. I've seen them look like that before. And like yellow G/K-types. And like brown dwarf types. I don't know enough about astronomy and stars to know if it is accurate or not. Maybe the stellar forge thinks it's almost, but not quite, made it to the main sequence?
Since the A star is a Herbig at only 2 million years old then the B star is presumably the same age - (therefore not even yet a pre-main sequence star) - not old enough for Hydrogen fusion to have started.
Before fusion starts, large stars will still get quite hot. The color temperature (the color of light produced by black body radiation, from a surface of a given temperature) is determined by the surface temperature, and most of the star's mass will heat up quite a bit due to gravitational collapse, even before the core "ignites". The core has to reach millions of degrees before fusion can begin. So in a way, the heat has to come first, then fusion, and then it becomes a self sustaining reaction.
I'll just pop this here;
en.wikipedia.org
Sure it's wikipedia but it's good enough for basic info like this.
T Tauri star - Wikipedia
Sure it's wikipedia but it's good enough for basic info like this.