| Spiral/Lenticular Galaxies |
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| • | Tully-Fisher
relation: |
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| • | Original
exponent = 2.5, later steeper, 3.5, |
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| and
even steeper for near-IR H-band.
Very |
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| tight
near-IR correlation so great distance |
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| indicator
(recall the Hubble assignment!). |
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