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."
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
Stars can be classified into different sizes based on their mass and luminosity. The most common sizes are dwarf stars (like our Sun), giant stars (larger and more luminous than the Sun), and supergiant stars (the largest and most luminous stars, like Betelgeuse and Rigel). There are also intermediate sizes like subgiant stars.
The hottest stars are the brightest stars, as their high temperatures cause them to emit large amounts of energy. These stars are not necessarily the farthest from Earth or the least massive. Our Sun is a relatively average star in terms of temperature and brightness.
O, because O stars are the hottest, so they use their energy faster than the lower stars.
No, glow in the dark stars are not considered luminous objects. They are phosphorescent, meaning they absorb light and then slowly release it in the form of glowing light. Luminous objects emit their own light, while phosphorescent objects like glow in the dark stars require an external light source to charge their glow.
Spectral class Y, which is typical of "brown dwarf" stars.
An irregular luminous band of stars is called a galaxyof stars.
in luminous spring it has to have at least 2 IQ stars and you have to have a Sun ribbon
Stars are luminous, shine by themseves. Moon isn't, it can only reflect light.
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
Stars can be classified into different sizes based on their mass and luminosity. The most common sizes are dwarf stars (like our Sun), giant stars (larger and more luminous than the Sun), and supergiant stars (the largest and most luminous stars, like Betelgeuse and Rigel). There are also intermediate sizes like subgiant stars.
The sequence of stars listed in order of increasing luminosity typically includes red dwarfs, main-sequence stars (like our Sun), giant stars, and supergiant stars. Red dwarfs are the least luminous, followed by main-sequence stars, then giant stars, and finally supergiants, which are the most luminous. This order reflects the increasing energy output and size of the stars as they evolve.
Generally, the more massive a star is, the more luminous they are. The most luminous stars appear blue.
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.
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.
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.