color-magnitude diagram


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color-magnitude diagram

(C-M diagram) See Hertzsprung–Russell diagram.

color-magnitude diagram

[′kəl·ər ¦mag·nə‚tüd ‚dī·ə‚gram]
(astronomy)
A graph of the apparent or absolute magnitudes of a group of stars versus their color indices.
References in periodicals archive ?
The resulting color-magnitude diagrams enabled Carraro to classify the stars into low-mass dwarfs still on the hydrogen-burning main sequence and higher-mass stars that had evolved to the red-giant stage or beyond.
Especially important are binaries in the Hyades, whose color-magnitude diagram is a standard for calibrating interstellar distance scales.
As a teacher at The King's College in Alberta, I helped senior students Tyler Foster (an English major and avid amateur astronomer) and Rob Haasdyk (a chemistry major) plan a project to make a color-magnitude diagram of the open star cluster M37 in Auriga.
This value is plotted against the star's visual brightness to produce a color-magnitude diagram.
Beyond that point, chapter by chapter, he leapfrogs his prehistoric report by orders of magnitude of years, tackling potassium-argon dating and the ages of fossil hominids, molecular dating and divergence times for mammalian lineages, meteorites and the age of the solar system, and the use of color-magnitude diagrams for assessing ages of collections of stars.
9m telescope and suitable teriary candidates will be identified on color-magnitude diagrams.
For instance, we can construct infrared color-magnitude diagrams that share many features of their visible-light counterpart, the Hertzsprung-Russell (H-R) diagram.
The infrared color-magnitude diagrams at right compare stars in a random part of the Milky Way with stars in the Large Magellanic Cloud.
Today's amateurs can create color-magnitude diagrams and estimate the age of open star clusters by determining the turnoff point of the main-sequence stars.
He then used these subdwarfs to calibrate the color-magnitude diagrams of several globulars with similar chemical composition.