What is the relationship between star brightness star temperature?

Answer 1

The Hertzsprung-Russell diagram shows absolute magnitute or brightness against it's colour (which is an indication of temperature) . This shows the main sequence, which describes the typical life of a star.

Answer 2

The amount of light we receive from a star - other things being equal - is inversely proportional to the square of the distance. For example, from a star that is ten times as far from us as another star (of the same type), we will only receive 1/100 of the light that we receive from the closer star.

The "actual" brightness of the star is called "absolute magnitude". It is calculated as if all stars were at the same distance, so that we can compare stars directly. The "apparent magnitude" of the star is how bright it appears in our own night sky.

Two stars can have the same apparent magnitude even though one star is small, dim and close, while the other star is huge, bright and distant.

Answer 3

The brightness of a star is related to its temperature; hotter stars appear brighter than cooler stars. This is because the amount of light emitted by a star is proportional to its temperature according to Wien's law. Therefore, stars with higher temperatures are generally brighter than stars with lower temperatures.

Answer 4

generally the hotter the star the more bright it will be generally the hotter the star the more bright it will be

Answer 5

Brightness tells you the temperature and mostly temperature would tell the brightness of the star that we are talking about.

Answer 6

Hotter stars appear brighter, and cooler stars appear dimmer