When finding relationships between various properties of stars, I frequently find next to nothing on the Mass-Temperature relationship. I, of course, see the Mass-Luminosity and the Luminosity-Temperature relationship. So I wonder, why is there no mass-temperature relationship? Wouldn't it be algebraically viable to come up with this relationship?

As a side note, I'm only looking at main-sequence stars, and excluding the stars that do not fit in the relationship for main-sequence stars, such as giants and white dwarfs.

  • 3
    $\begingroup$ I'm voting to close this question as off-topic because this would be better for astronomy.SE. $\endgroup$
    – user4552
    Commented Sep 11, 2019 at 20:36
  • 2
    $\begingroup$ I'm voting to leave this open because astronomy & astrophysics questions are fully on topic on this site. $\endgroup$
    – Kyle Kanos
    Commented Sep 12, 2019 at 12:26
  • $\begingroup$ Can't you just use a table from "Astrophysical Quantities"? $\endgroup$
    – ProfRob
    Commented Sep 21, 2019 at 8:02

1 Answer 1


For main-sequence stars, the Luminosity is related to the temperature by the expression $L\approx M^{3.5}$. The reason for the 3.5 exponent is because the relationship best fits some stars at $L = M^3$ up to $L = M^4$. For non-main-sequence stars, you probably need a relationship between density and Luminosity.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.