Assertion: quasar's luminosity | /r/HasProperty | proportional
Facets:
value: to ma
type: LOCATION
value: to temperature
type: OTHER
value: to the fourth power
type: TRANSITIVE-OBJECT
Source sentences:
text: the massive, very young and energetic Class O stars boasting temperatures in excess of 30,000 K while the less massive, typically older Class M stars exhibit temperatures less than 3,500 K. Because luminosity is proportional to temperature to the fourth power, the large variation in stellar temperatures produces an even vaster variation in stellar luminosity.
text: This relationship, which applies to main sequence stars, states that luminosity is proportional to Ma, where M = mass and the power a = 4½, for stars whose mass is less than half the sun; a = 3½ for stars whose mass is more than 1½ that of the sun.