Relationship between mass and surface temperature of a star

[jewfro420]

i was wondering if there is a relationship between mass and temperature that would allow me to calculate the surface temperature of a blue super giant of 24 solar masses?

or do i simply need more information to do this

 

[Drakkith]

I think you would need to know things like age of the star, makeup of the star, and similar stuff.

 

[qraal]

i was wondering if there is a relationship between mass and temperature that would allow me to calculate the surface temperature of a blue super giant of 24 solar masses?

or do i simply need more information to do this

It's roughly T = T(sol)*M^0.5 with M in solar masses.

 

[FtlIsAwesome]

It's roughly T = T(sol)*M^0.5 with M in solar masses.

By using T = 5,778 * 24^0.5
I get 28,306 K, which is slightly outside the 30,000 K - 52,000 K range for O class stars.
So either I didn't use it right, or it doesn't work for O class stars.

Probably what will be an important factor in determining surface temp is the spectral class (O B A F G K M), and luminosity.

 

[Vanadium 50]

24 solar masses is enormous. This is more than Rigel; it's looking like something like Alnitak. Which, by the way, is around 30K. Getting within 10% with a hand-wavy formula is pretty good.

 

[Drakkith]

Am I incorrect in thinking that age, metal content, and other various factors would affect the stars temp as well?

 

[jewfro420]

so basically i think that there is no relationship between mass and temperature for non main sequence stars so this can't be done. cheers for your help anyways

 

[FtlIsAwesome]

so basically i think that there is no relationship between mass and temperature for non main sequence stars so this can't be done. cheers for your help anyways

There might be a correlation between brightness/magnitude/luminosity and temperature, but that's just my guess.