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Why does the expansion of a star's envelope make it cooler and more luminous?
Wiki User
∙ 9y ago
The star's expansion is caused by an increase in energy. Therefore, the star becomes more luminous and cooler due to production of more energy.
Wiki User
∙ 9y ago
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Are blue stars more luminous?
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
What kind of stars are cooler then the sun?
red stars are cooler than the sun
What are some luminous objects that are found in nature?
stars
Which stars are very cool but very luminous?
Red Giants
Why is it difficult to find out how common the most luminous stars are The least luminous stars?
from my text book: "The most luminous stars are so rare you find few in your survey region. There are no O stars at all within 62 PC of Earth. Lower-main-sequence M stars, called red dwarfs, and white dwarfs are so faint they are hard to locate even when they are only a few parsecs from earth."
What is the Collective noun for an irregular luminous band of stars?
An irregular luminous band of stars is called a galaxyof stars.
Are the stars and moon luminous?
Stars are luminous, shine by themseves. Moon isn't, it can only reflect light.
Are blue stars more luminous?
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
Are stars luminescent?
Strictly speaking, no; stars are incandescent (light resulting from heat) as opposed to luminscent (light resulting from non-thermal based effects). One might, however, safely describe stars as "luminous" in a metaporical sense.
Which is cooler the blue stars or the red stars?
Red stars are cooler than blue stars
What color are very heavy stars?
Generally, the more massive a star is, the more luminous they are. The most luminous stars appear blue.
Stars are brilliant balls of gases that are?
luminous
What kind of stars are cooler then the sun?
red stars are cooler than the sun
Are stars luminous or non luminous?
All things, except black holes, are luminous. That includes stars. You might think that some other things are not luminous but that's because you can't see the kinds of light that they emit.
Are all nebulae luminous?
Technically, no nebulae are luminous. The ones that appear as such have stars either within or near them, and the nebulae merely reflect the light emitted by these stars.
What are the stars?
A star is a massive, luminous ball of plasma.
A name for a luminous object?
sun, stars, CD,
