Cool Stars 14 - Submitted Abstract # 42
This version created on 05 October 2006

SDSS/Johnson-Cousins/2MASS Color Transformations for Cool Stars


James Davenport, University of Washington
Andrew West, Berkeley.

The SDSS and 2MASS have been rich sources for identifying and studying
late-type stars.  Because of the scale of these surveys it is
important to have well defined calibrations such as parallax relations
and color transformations to older photometric systems.  Using the
0.78m MRO telescope, we observed Johnson-Cousins VRI and SDSS riz
colors and magnitudes for 23 faint stars in the SDSS footprint, as
well as 17 stars outside of the footprint with measured trig
parallaxes.  Combining these observations with SDSS, 2MASS and PMSU
survey data, we provide extended color transformations and parallax
relations for late type stars.

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