spectral type

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spectral type [′spek·trəl ‚tīp]

(astronomy)

A label used to indicate the physical and chemical characteristics of a star as indicated by study of the star's spectra; for example, the stars in the spectral type known as class B are blue-white, and are referred to as helium stars because the dominant lines in their spectra are the lines in helium spectra.

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No references found			Antares is a red supergiant, spectral type Ml, located 550 light years away and about 700 times the diameter of the Sun. Double stars in Scorpius by Ferreira, Lucas / Monthly Notes of the Astronomical Society of Southern Africa The stars have been selected by Earth-based and HST observations as being broadly Sun-like in size and spectral type. NASA's Kepler joins the extrasolar planet hunt by McGee, Hazel / Journal of the British Astronomical Association 334 QB843 The workshops are held every 10 years, and this latest addressed such unanswered questions as the chemical evolution of the different spectral types of white dwarfs, and the excitation of pulsations. White dwarfs; proceedings by SciTech Book News			Spectral Lines, Width of spectral locus spectral luminosity classification Spectral Luminous Efficacy spectral luminous efficiency spectral measure spectral photography spectral power distribution spectral pyrometer spectral radiance spectral radiance factor spectral radius spectral reflectance spectral regions Spectral Resolution of a Function Spectral Resolution of a Linear Operator Spectral Resolution of a Random Function spectral response spectral selective photoelectric effect Spectral Sensitivity Spectral Series spectral temperature Spectral Term spectral theorems spectral transmission spectral type spectral width spectral-shift reactor spectre spectrobolometer Spectrochemical Analysis Spectrochemical Analysis, X-Ray spectrofluorometer spectrogram Spectrograph spectrography spectroheliocinematograph spectroheliogram Spectroheliograph Spectrohelioscope Spectrometer Spectrometry spectrophone Spectrophotometer spectrophotometric titration Spectrophotometry spectropolarimeter spectropolarimetry spectropyrheliometer spectroscope Spectroscopic Binary			Spectral reflecance Spectral reflectance Spectral reflectance Spectral reflectance Spectral Reflectance Imaging Biosensor spectral regions Spectral Regression Discriminant Analysis Spectral Research & Technology, Inc. Spectral Resolution of a Function Spectral Resolution of a Linear Operator Spectral Resolution of a Random Function spectral response spectral response Spectral Sciences, Inc. spectral selective photoelectric effect spectral sensitivity spectral series Spectral shift Spectral shift Spectral Signal to Noise Ratio spectral temperature Spectral Term spectral theorems Spectral Theory of Diffraction Spectral Transform Decision Diagram spectral transmission spectral transmission factor spectral transmission factor spectral transmission factor Spectral Transmittance Curve spectral type spectral types spectral types Spectral Vegetation Index Spectral Warping Spectral Wave Prediction System Spectral width Spectral-Domain Method Spectral-Domain Moment Method Spectral-Encoded Code-Division Multiple Access Spectral-Null Code spectral-shift reactor SpectraLink Certified Messaging Application SpectraLink Voice Priority spectrality spectrality spectrally spectrally Spectrally Adaptive Light Filtering Spectrally Agile Sensor System Spectrally Optimized Smart Spectrally Resolved Four-Wave Mixing spectralness spectralness spectre spectre spectre spectre spectre Spectre (creature) Spectre (creature)

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