early spectral type 早光谱型
spectral type of stars [天] 恒星光谱型
g spectral type globular clusters g型球状星团
magnitude-spectral type diagram 星等
doppler spectral type 多普勒谱型
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N any of various groups into which stars are classified according to characteristic spectral lines and bands. The most important classification (Harvard classification) has a series of classes O, B, A, F, G, K, M, the series also being a scale of diminishing surface temperature 光谱型
A complete MK designation includes both spectral type and luminosity class -for instance, the sun is a G2V.
一个完整的MK系统代号包含光谱类型和光度型两部分——例如，太阳属于G 2 V类恒星。
The appearance of the different spectral type for white dwarfs depends mainly on the difference in temperature and internal mixing degree.
白矮星不同光谱型的表现，主要是由于温度的不同和内部混搅程度的不同引起的。
The hertzsprung - russell diagram serves this purpose . it is a plot of absolute magnitude against surface temperature i . e . , spectral type of stars.
简单来说，赫罗图把大量恒星的绝对星等和表面温度或谱型关系以图表方式显示出来。
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