If it is small and cool enough it could be a "brown dwarf".
If it is a little warmer it is called a "Red Dwarf".
No it is a small star (about the size of Earth) that is VERY dense and quite hot (although it is not producing new energy).
Red
prominece
Stars near red in color are far cooler than ones which are bluish (considered as the hottest). However the total output of a red giant star is very high even though its surface is relatively cool. This is because it has a large surface area.
A Red Dwarf is a small and relatively cool star, on the main sequence, With a spectral class of either late K or M.They will last for billions if not trillions of years. Because of the relatively low temperatures, they are very efficient.Any red dwarf created at the beginning of the Universe, is still in existence and will be for billions/trillions of year.So there are no "dead red dwarfs" - yet.
That can either be an old white dwarf, a red dwarf. or a brown dwarf.
cool
Cool Toad is a small website offering free music downloads, email services, and auction listings. It also has a search function. It is a relatively small website, however, despite these many features.
Yeah, he thinks its cool he can make girls faint.
No it is a small star (about the size of Earth) that is VERY dense and quite hot (although it is not producing new energy).
The dark spots on the surface of the sun are sunspots. They are caused by intense magnetic activity which stops convection and causes a relatively cool spot.
Yes, the cool and rigid shell is the asthenosphere.
Relatively cool, yes, especially if you compare them with incandescent lightbulbs.
Red
Yes
prominece
depends what you call cool