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The star that is hotter will have a higher luminosity.
If the binary stars were of too high luminosity it would be impossible to distinguish the two through vision alone. Therefore most visual binary stars are of low luminosity.
Luminosity.
Dwarf stars are dim because they are small, so their luminosity (amount of emitted energy) is low compared to other stars, and low luminosity means more dimness.
If the radius is larger, the surface will also be larger. As a functional dependency, you only need one - the radius, or the surface - whatever.
The star that is hotter will have a higher luminosity.
The star that is hotter will have a higher luminosity.
the bigger the radius the more the mass.
As temperature decreases, luminosity will also decrease As radius increases (and with it surface area, but radius is a much easier to work with if you're trying to compare stars so we usually say radius) luminosity will also increase. If both are happening at the same time, it is possible that the luminosity of the star will remain more or less constant. Often one change will dominate the other, such as when a star goes through the red giant phase when the increase in radius has a far greater effect than the drop in temperature, and the star becomes more luminous.
Yes. Around 76% of the stars are low luminosity stars.
The stars in the night sky shine with a remarkable luminosity.
To determine a star's luminosity is from size and temperature.
This is not necessarily true. most of the time stars with a larger diameter have more mass but some stars with a smaller diameter are more dense and have a greater mass. Find a main sequence star chart and you can compare the data.
Blue stars are very hot stars and so usually have high luminosity.
If the binary stars were of too high luminosity it would be impossible to distinguish the two through vision alone. Therefore most visual binary stars are of low luminosity.
luminosity or brightness
Luminosity is the total amount of energy emitted by a star per second.