Star Classification

==Common Star Types==
Class Image	Class Name	Details
 	Class O 	An O-class (or O-type) star is a stellar classification for stars composed of ionized atoms, especially helium, emitting high amounts of ultraviolet radiation, generally referred to as being blue-violet or dark blue in color. O-type stars in the main sequence tend to be extremely hot (in the neighborhood of 28,000 to 50,000 Kelvin) and bright in terms of absolute magnitude, the "dark" and "violet" descriptors of their name are as such because of the large output of non-visible heat radiation.
 	Class B 	A B-class (or B-type) star is a stellar classification for a hot blue star that is composed of neutral helium and some hydrogen. The temperature is between 10,000 and 28,000 Kelvins, generally referred to as being a blue star.
 	Class A 	An A-class (or A-type) star is a stellar classification for stars composed of strong hydrogen and some ionized metals. The temperature ranges from 7,500 to 10,000 Kelvin, generally referred to as being blue-white or light blue in color.
 	Class F 	A Class F star is white and is made up of hydrogen and ionized metals. Also in the star there is calcium and iron. The temperature in this type of star is between 6,000 and 7,500 K.
 	Class G 	A G-class (or G-type) star is a stellar classification for stars composed of both neutral and ionized atoms of metallic substances, including ionized calcium, emitting in the neighborhood of 5,000 to 6,000 Kelvin, generally referred to as being yellow in color. G-type stars in the main sequence tend to be median in terms of absolute magnitude, and in the "cooler" half of the stellar classification system.
 	Class K 	A K class (also K type or orange star) is a type of star that is made up of neutral metals. The temperature is around 3,500 through 5,000 degrees Kelvin.
 	Class M 	An M-class (or M-type) star is a stellar classification for red star made up of ionized atoms, especially helium. The temperature is cool at 2,500 to 3,500 degrees K.
==Uncommon Star Types==
Class Image	Class Name 	Details
 	Brown Dwarf 	A brown dwarf is a "star" whose mass is too small to have nuclear fusion based on hydrogen to occur at its core (the temperature and pressure at its core are insufficient for hydrogen fusion) though they can fuse deuterium and rarely even lithium. A brown dwarf is not very luminous. Brown Dwarfs typically appear as magenta tinted because of absorption by sodium and potassium atoms of light in the green portion of the spectrum.
 	Neutron Star 	A neutron star is a type of stellar remnant that can result from the gravitational collapse of a massive star during a Type II, Type Ib or Type Ic supernova event. Such stars are composed almost entirely of neutrons, which are subatomic particles without net electrical charge and with slightly larger mass than protons. Neutron stars are very dense (the average Neutron star contains 500,000 times the mass of the Earth in a sphere with a diameter no larger than that of Brooklyn), very hot and emit vast amounts of deadly radiation.
 	Black Hole 	A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping.
 	Ultraviolet Shifted Star	A rare type of star that due to various compositional structures is shifted into the mostly UV spectrum and as such appears bright pink, such stars are usually of A or F Class.
 	Metaphasic Star 	Metaphasic Star's typically have the same temperature as a G or K class star, are an unusual green color and emit strange radiation.
category:Science
category:Stellar Cartography