no.they varry in brightness
red giants
First let's assume the question is about a star's actual brightness not apparent brightness as seen from Earth. There are in fact several possibilities. The Hertzprung-Russell diagram is helpful here. One possibility is red dwarfs and white dwarfs. Of course there's large variation within these groups, but a red dwarf can certainly have a luminosity that's similar to a white dwarf. If the question is about apparent brightness, then a distant luminous star can appear similar in brightness to a nearby faint star.
Red giants are generally cooler than white dwarfs. While red giants have surface temperatures ranging from about 2,200 to 5,000 Kelvin, white dwarfs can reach temperatures of 5,000 to over 100,000 Kelvin. This temperature difference is due to the distinct stages of stellar evolution that these types of stars represent. Red giants are in a later stage of life, while white dwarfs are the remnants of stars that have exhausted their nuclear fuel.
No. Red giants have temperatures comparable to those of red dwarfs. Even cooler are brown dwarfs, which are objects that are in the intermediate range between planets and stars.
There are several types of stars based on their size, temperature, and stage of life. Some common types include red giants, white dwarfs, neutron stars, and black holes. These stars differ in characteristics such as mass, brightness, and lifespan.
red giants
White Dwarfs, Supergiants, and Red Giants are stars that are found in the sky.
First let's assume the question is about a star's actual brightness not apparent brightness as seen from Earth. There are in fact several possibilities. The Hertzprung-Russell diagram is helpful here. One possibility is red dwarfs and white dwarfs. Of course there's large variation within these groups, but a red dwarf can certainly have a luminosity that's similar to a white dwarf. If the question is about apparent brightness, then a distant luminous star can appear similar in brightness to a nearby faint star.
yes they are
Blue giants and red dwarfs are both types of stars, but they are quite different. Blue giants are massive and hot stars that shine brightly, while red dwarfs are smaller, cooler stars that emit a fainter light. Blue giants are more short-lived and evolve faster compared to red dwarfs, which have much longer lifespans.
No, white dwarfs are much hotter than giants. Giants are stars in the later stages of their evolution, while white dwarfs are the remnants of dead stars that have exhausted their nuclear fuel. White dwarfs can have surface temperatures in the tens of thousands of degrees Kelvin, while giants have lower surface temperatures.
Red stars (Red dwarfs and red giants) have a spectral class of M.
Red stars (Red dwarfs and red giants) have a spectral class of M.
No. Red giants have temperatures comparable to those of red dwarfs. Even cooler are brown dwarfs, which are objects that are in the intermediate range between planets and stars.
Lots of them, Red Dwarfs are known to be the most abundant stars. Red Giants are less common but still red.
There are several types of stars based on their size, temperature, and stage of life. Some common types include red giants, white dwarfs, neutron stars, and black holes. These stars differ in characteristics such as mass, brightness, and lifespan.
Yes. The lowest mass stars are red dwarfs while many older stars turn into red giants and red supergiants.