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Use colors to select MS stars but beware RG’s!

Use colors to select MS stars but beware RG’s!. r - i. Select by color (left), then convert colors to absolute magnitudes (above). g - r. SDSS sky coverage used for analysis of MW disk structure. Juric et al. 2008. Location of Galactic Center is evident (above).

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Use colors to select MS stars but beware RG’s!

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  1. Use colors to select MS stars but beware RG’s!

  2. r - i Select by color (left), then convert colors to absolute magnitudes (above) g - r SDSS sky coverage used for analysis of MW disk structure. Juric et al. 2008

  3. Location of Galactic Center is evident (above) So is the fact that there is a lot of extinction (above and left).

  4. Extinction map in Galactic Plane and around Galactic Bulge

  5. Density (red line) Lum Function (green) Convolution (blue) Density profile in Galactic Bulge along major (green), intermediate (blue) and minor (red) axes Bulge is oxy/peanut shaped from the side 27 deg Tilt to los Top view; Arrow is direction to Sun

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