File:M3 color magnitude diagram it.jpg
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DescriptionM3 color magnitude diagram it.jpg |
This is a color-magnitude diagram for the Messier 3 globular cluster (after A.R. Sandage 1953). The colored points on the chart represent the plotted positions of stars in the cluster. The horizontal scale is based on the B—V color index of the measured stars. From the main sequence stars at magnitude 19 and fainter, the plot forms a knee that bends toward the upper right. Based on the position of the knee, the distance modulus for this cluster is determined to be 15.7. The stars along the upper right branch have left the main sequence and entered the red giant stage. From the red giants branch, a horizontal branch then runs to the left. Note the gap in this branch at visual magnitude 15–16 and spectral type A, where there is a population of variable stars. |
Date | |
Source | Commons; versione tradotta in italiano dell'opera Image:M3 color magnitude diagram.jpg |
Author | Roberto Mura |
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Other versions | Image:M3 color magnitude diagram.jpg |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:42, 4 May 2008 | 796 × 673 (129 KB) | Roberto Mura (talk | contribs) | {{Information |Description=This is a color-magnitude diagram for the Messier 3 globular cluster (after A.R. Sandage 1953). The colored points on the chart represent the plotted positions of stars in the cluster. The horizontal scale is based on the B—V |
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Orientation | Normal |
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Horizontal resolution | 200 dpi |
Vertical resolution | 200 dpi |
Software used | Adobe Photoshop CS3 Windows |
File change date and time | 18:08, 4 May 2008 |
Color space | Uncalibrated |