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What happens to the magnitude of a star in the main sequence as its temperature decreases?
The cooler a star is, the less luminous it is. That's assuming the star stays about the same size. "Red giant" stars for example are relatively cool, but very luminous because of their size. However, red giants are not main sequence stars.
For a main sequence star, a lower temperature means it is LESS bright.
That means it has a higher number on the "magnitude" scale.
So the answer is: "the magnitude increases"
Our Sun is putting out more energy than it did a billion years ago. It is expected to get even hotter before it leaves the main sequence and becomes a red giant.
What else can I help you with?
What happens to the luminosity of stars in the main sequence as temperature decreases?
In the main sequence, as the temperature of a star decreases, its luminosity also decreases. This relationship is explained by the Stefan-Boltzmann Law, which states that a star's luminosity is proportional to the fourth power of its temperature. Therefore, cooler stars emit less energy and light compared to their hotter counterparts. As a result, lower temperature main sequence stars, such as red dwarfs, are significantly less luminous than hotter stars like blue giants.
What happens to a fluid when temperature decreases?
When temperature decreases, a fluid will eventually freeze and become solid
What happens to the temperature in the mesosphere as the altitude increase?
The temperature decreases
What happens to the temperature when a liquid becomes a gas?
The temperature decreases
What happens to the temperature vapor as it condenses?
decreases
When the temperature of an object decreases what happens to the molecules?
In every liquid (with the exception of water) the molecules, when the temperature decreases, contract.
What happens to the temperature of the drink when you put ice cubes in it?
the temperature decreases
When a cold front moves by a location what happens to the temperature?
The temperature decreases.
What happens to a stars nuclear energy generation change if the core decreases in temperature?
What happens to a stars nuclear energy generation change if the core decreases in temperature?
What happens to matter when its temperature decreases?
Thermal Contraction
What happens to the volume of a gas - if the temperature is decreased?
It decreases.
What happens to the movement of molecules when their temperature is?
As the temperature is lowered, the movement of the molecules decreases.
