Basically, all stars that aren't "giants", "supergiants", or "hypergiants" are considered dwarf stars. This means that all stars on the main sequence are dwarfs.
No, a white dwarf is not considered a main sequence star. A main sequence star is a star that is still fusing hydrogen in its core. A white dwarf is the remnant of a low to medium mass star in which fusion has stopped.
A white dwarf is very small as stars go; comparable in size to a small planet such as Earth.
The sun is a yellow dwarf star and as such is considered a medium-sized star. The term is something of a misnomer as the majority of stars are red dwarfs smaller than the sun. The term dwarf is used to distinguish how much smaller event the sun is than giant stars.
There are many red dwarf stars in the universe. They are not most common type of star.
A dwarf star is denser than a giant star. Dwarf stars have a higher density due to their smaller size and higher mass compared to giant stars. Giant stars have larger volumes and lower densities as they have expanded and become less dense towards the end of their life cycle.
The Sun is actually relatively small, but recently discovered to be brighter than 85% of stars in the Milky Way. It is classed as a Yellow Dwarf.
Red dwarf stars are the commonest stars, at least in the region of space around our Sun.
No. A white dwarf is a remnant of a dead star.
A white dwarf is the remnant of a low to medium mass star.
Most of the stars you can see are dwarf stars.Blue dwarf - Hypothetical star when a red dwarf exits the main sequence.White dwarf - Remnants of a Solar class star when it dies.Yellow dwarf - A star similar to our own SunOrange dwarf - A star just a bit smaller than our Sun.Red dwarf - A star which fuses hydrogen very slowly. The most abundant.Black dwarf - Hypothetical star when a white dwarf cools to zeroBrown dwarf - A "star" that did not have enough mass to fuse hydrogen.Examples:Blue dwarf - Unknown.White dwarf - 40 Eridani, IK Pegasi BYellow dwarf - The Sun, Alpha Centauri A,Orange dwarf - Alpha Centauri B, Epsilon Indi.Red dwarf - Proximus Centauri, Gliese 581Black dwarf - Unknown.Brown dwarf - 2M1207b, MOA-2007-BLG-192Lb.
; Binary Stars, Black Dwarf,Black Hole,Brown Dwarf,Galaxy,Main-Sequence Stars,Nebula,Neutron Star,Nova,Pulsar,Quasar,Red Giant,Supergiant,Supernova,Variable Star,White Dwarf,Wolf-Rayet Star...................
Well, white dwarf, brown dwarf, and neutron stars don't; but they are "dead" stars.