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A class star

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For other uses, see Class A.
A class star

An example of an A-class star.

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. (ST reference: Star Charts)



Stellar classification
By class and type class O blue-violet starclass B blue starclass A blue-white starclass F white star (white dwarf) • class G yellow star (yellow dwarfyellow giant) • class K orange star (orange giant) • class M red star (red dwarfred giant) • green starbrown dwarfN-type starR-type starS-type starD-type star
By size or makeup black hole/black starcarbon starcollapsardwarf star (brown dwarfred dwarfwhite dwarfyellow dwarf) • giant star (blue giantred giantorange giantyellow giant) • Lazarus starneutron starprotostarpulsarsupergiant starWolf-Rayet star

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