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physical object > natural object > celestial body > nebula > H II region > gaseous nebula > 30 Doradus Nebula |
30 Doradus Nebula comparison table |
Subject | has absolute magnitude | is a kind of | is an instance of | has synonym | has image | has definition | has distance |
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gaseous nebula | H II region | emission nebula | An H II region, a supernova remnant, or a planetary nebula. H II regions have an emission-line optical spectrum, and a thermal continuous spectrum declining in intensity as the wavelength increases (from maximum in the ultraviolet) through infrared and radio. Supernova remnants have an emission-line optical spectrum and a nonthermal radio spectrum. Temperatures of planetary nebulae are much higher than those of H II regions. | ||||
30 Doradus Nebula | Mv = - 19 | gaseous nebula | Tarantula Nebula | A giant H II region, at least 300 pc across - one of the largest known. It is larger and more luminous than any known in the Galaxy. It is the brightest object in the Large Magellanic Cloud at both optical and radio wavelengths, and contains the densest concentration of W-R stars. (The brightest object near the center is a O+ WN star of Mv = - 10.2.) It is characterized by very rapid, disordered, and complex motions. | 170000 light years |
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