Harvard-Draper sequence
Harvard-Draper sequence
[¦här·vərd ′drā·pər ‚sē·kwəns] (astronomy)
A system of classification of stellar spectra based on features that are found to vary in a smooth way from one star to another, and on the star's color. Also known as Harvard sequence
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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