How does the temperature of a star infer its size/mass?

If we have two stars like the Albireo star, one bright blue and one yellow, how does the general knowledge of knowing that the bright blue one is hotter and the golden one is cooler tell us about their size/mass?



Im looking for a qualitative answer rather than quantitative. Thank you very much!How does the temperature of a star infer its size/mass?look at a bonfire... then look at a match... then think about this questions osme moreHow does the temperature of a star infer its size/mass?Take a look at the H-R (Hertzsprung Russel) diagram. The main sequence is a line(not that straight) from left top to right bottom. Surface temperature increases to right and luminosity increases to top on the main sequence. The bluer a star is its luminosity goes up.

Red stars on main sequence are dim except when they are giants, branching off towards the right top. Red giants have a rare (less dense) distribution of its gas and have diameters that engulf part or even whole of our Solar system in size. Similarly hot (blue) dwarfs are possible, leaving the main sequence and trending to the left, lower. Luminosity increases as the 4th power (square of square) of temperature. If temperature increase is 70% luminosity goes up 4 times and if it doubles luminosity goes up sixteen fold.

Also luminosity increases as the square of the physical size in terms of diameter.

Mass has no fixed relation with size (diameter here). A star can be very dense like a white dwarf or neutron star. The upper limit of mass for a stable star is the Chandrasekhar limit of 1.4 times Solar mass. Beyond this the star mass leads to gravitational collapse that might blow up the star.How does the temperature of a star infer its size/mass?Blue stars usually biggest, followed by blue to white, then white to yellow, orange to red, with red usually being the smallest :)