### Vogt-Russell theorem

**(VR theorem)**
(proposition that a star's structure depends on its mass and makeup)

The **Vogt-Russell theorem** is the proposition that a star's
structure and evolution (its structure over time)
depend only on its mass and chemical makeup.
Despite the term "theorem", it is not "proved" as would be a
mathematical theorem. However, it is accepted as typically
approximately true for main sequence stars in
hydrostatic equilibrium, based on observation and current
understanding of stellar structure. It was devised when the
mechanics of binary stars revealed stellar masses, which could
be compared with spectrography and determinations of their
luminosity. Among the confounding factors are the effects of
interactions with companion stars, such as mass transfer (c.f.,
Algol).

(*stars,stellar evolution,stellar structure*)
**Further reading:**

http://en.wikipedia.org/wiki/Vogt-Russell_theorem

https://arxiv.org/abs/1504.08188

https://arxiv.org/abs/1812.11864

http://www.faculty.virginia.edu/ASTR5610/lectures/stellar_evolution/stellar_evo.html

https://ui.adsabs.harvard.edu/abs/1931MNRAS..91..951R/abstract

https://ui.adsabs.harvard.edu/abs/1931MNRAS..92..147R/abstract

**Referenced by pages:**

main-sequence lifetime (MS lifetime)

post-common envelope binary (PCEB)

stellar evolution

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