Difference between revisions of "Making CMDs and color-color diagrams"
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| − | To make a color-magnitude diagram (CMD) or a color-color diagram, you need to (1) convert any fluxes/flux densities you have to magnitudes; (2) compute colors by taking bluer color minus redder color (e.g., B-V or K-[24]); (3) if a CMD, plot magnitudes on the y-axis, with brighter objects (''smaller'' numbers, so reversing the 'standard' y-axis | + | To make a color-magnitude diagram (CMD) or a color-color diagram, you need to (1) convert any fluxes/flux densities you have to magnitudes; (2) compute colors by taking bluer color minus redder color (e.g., B-V or K-[24]); (3) if a CMD, plot magnitudes on the y-axis, with brighter objects (''smaller'' numbers) on the top, so reversing the 'standard' y-axis; (4) if a CMD, colors should be on the x-axis and increase to the right; if a color-color diagram, colors should be on both axes, increasing to the top and right. |
=Most coherent, developed, tested materials= | =Most coherent, developed, tested materials= | ||
Revision as of 20:22, 11 August 2020
To make a color-magnitude diagram (CMD) or a color-color diagram, you need to (1) convert any fluxes/flux densities you have to magnitudes; (2) compute colors by taking bluer color minus redder color (e.g., B-V or K-[24]); (3) if a CMD, plot magnitudes on the y-axis, with brighter objects (smaller numbers) on the top, so reversing the 'standard' y-axis; (4) if a CMD, colors should be on the x-axis and increase to the right; if a color-color diagram, colors should be on both axes, increasing to the top and right.
Contents
Most coherent, developed, tested materials
Other important CoolWiki pages
- Filters
- Magnitudes
- Photometry (concept)
- Photometry (finding it)
- Color-color and color-magnitude diagrams
- Color selection
