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How does the hertzsprung Russell diagram classify stars?

increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature


What does the Hertzsprung-Russell diagram show about main-sequence stars?

increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature


Which two groups of stars can have similar brightness?

Variable stars and main sequence stars can have similar brightness. Variable stars, like Cepheid variables, can fluctuate in brightness over time, while main sequence stars maintain a relatively stable brightness due to their fusion processes.


Do stars have the same brightness and sizes?

No. Stars vary greatly in size and brightness.


What happens to brightness as surface temperature of the main sequence stars increase?

The hotter the star, the brighter. Ex: A stove


The temperature and brightness of stars are indicated by their what?

The temperature of stars is indicated by their color, with cooler stars appearing more red and hotter stars appearing bluer. The brightness of stars is measured in terms of luminosity, which is the total amount of energy emitted per unit of time.


What does the Hertzsprung diagram show about the main sequence?

increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature


What is a stars brightness known as?

A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.


Temperature and brightness of stars are indicated by what?

Temperature of stars is indicated by their color, with blue stars being hotter than red stars. Brightness of stars is indicated by their luminosity, which is how much light a star emits.


What is the measure of a stars brightness?

Magnitude.


Is shape affects the brightness of the stars?

no


In main-sequence stars how does brightness relate to temperature?

The brightness is very similar to the temperature, the brightness relies on the temperature