Data on Ellipticals from Virgo & Coma clusters (Figure from Sparke and Gallagher).
The color-magnitude relation is apparent in tilt of the "red sequence" in this now-classic plane arising from large surveys such as SDSS and Combo-17.
Color-Magnitude Relation |
| Abell 2218
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Abell 2218
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Colors and magnitude for galaxies in the field of Abell 2218. Many fain background galaxies are included, but the primary early-type color-magnitude strip is clearly visible.
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Data on Ellipticals from Virgo & Coma clusters (Figure from Sparke and Gallagher). |
The color-magnitude relation is apparent in tilt of the "red sequence" in this now-classic plane arising from large surveys such as SDSS and Combo-17. |