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What is the difference between brown dwarfs and Jupiter?
Brown dwarfs are substellar objects that are larger and more massive than planets like Jupiter. They are not massive enough to sustain nuclear fusion in their cores, which is a defining characteristic of stars. Jupiter, on the other hand, is a gas giant planet in our solar system.
What type of star has a high temperature and high luminosity in the HR diagram?
White dwarfs.
Is a red giant the coldest star?
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.
What is the color of a star with the lowest temperature?
A star with the lowest temperature would appear red in color. These stars are known as red dwarfs and are cooler compared to other types of stars like yellow dwarfs (like our sun) or blue giants.
What is a brown dwarf?
A brown dwarf is a substellar object that is larger than a planet but too small to sustain nuclear fusion in its core to become a star. They are often referred to as "failed stars" because they lack the mass and temperature needed for hydrogen fusion to occur. Brown dwarfs emit heat and light from the residual heat of their formation, but they cool and fade over time.
Do brown dwarfs orbit Mars?
no
What is a white dwarfs temperature?
it's cool
How can dwarfs be so bright when they are smaller than the sun?
Dwarfs, such as white dwarfs or brown dwarfs, are small in size but can still be very bright because they have high temperatures that produce intense luminosity. The brightness of a dwarf is determined by its surface temperature, not its physical size. Therefore, even though dwarfs are smaller than the sun, their high temperatures allow them to emit significant amounts of light.
Is a brown dwarf bigger than the sun?
No Brown Dwarfs are too small to be considerred a star.
A dying star shrinks to this?
Dying stars eventually shrink into white dwarfs (which as they age eventually become red dwarfs and then brown dwarfs - but this takes an extremely long time).
What stars are cool and dim?
Brown dwarfs are failed stars, so they don't count. Red dwarfs are the kings when it comes to dimness
What classification of stars has the lowest surface temperature?
Black dwarfs have the lowest surface temperature.
Very small stars that are usually old and running out fuel are called?
Those are dwarf stars, which start out as white dwarfs and as they (very slowly) cool, become red dwarfs and eventually brown dwarfs.
What are the types of medium and dwarf stars?
Somewhat confusingly, there are no "medium" stars. Stars are either dwarfs or giants. Dwarf stars (class V) come in all types: O, B, A, F, G, K, and M. There are also class VII "white dwarfs", probably better called "degenerate dwarfs" which are distinct from AV stars. In the first place, they really are small (about the size of Earth); the smallest red dwarfs are much larger, and even the so-called "brown dwarfs" are around the size of Jupiter (though much more massive). Also, they're not part of the main sequence.
What is the difference between brown dwarfs and Jupiter?
Brown dwarfs are substellar objects that are larger and more massive than planets like Jupiter. They are not massive enough to sustain nuclear fusion in their cores, which is a defining characteristic of stars. Jupiter, on the other hand, is a gas giant planet in our solar system.
What is the green dwarf name?
The name "green dwarf" is not typically used in astronomy to describe a type of star. Stars are classified based on their spectral characteristics which determine their color. Common types include red dwarfs, white dwarfs, and brown dwarfs, but not green dwarfs.
How does the brown dwarf make light and heat?
Brown dwarfs are heated primarily due to the compression of their interiors and are hot enough to glow. Some the the more massive brown dwarfs may also fuse deuterium, an isotope of hydrogen, for a short period after they form.
