Other
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21360104v&link_type=abstract
American Astronomical Society, AAS Meeting #213, #601.04
Other
Scientific paper
We have selected a set of nearby stars suitable for use in defining the solar-neighborhood main sequence from type K4 V to M6 V. The chosen stars have excellent photometry, spectral classifications on a consistent scale, and smooth distributions in color and molecular band strength. They also have high-quality parallax measurements which show them to lie near the mean main sequence as defined by a larger sample of stars. High-velocity stars, subdwarfs, and other peculiar types have been avoided, as have close visual binaries which may be difficult to observe separately. We show various color-magnitude diagrams for the selected standard stars and for a larger set of stars for which the same data are available.
The next step of our project will be to fit each star of the set to a model atmosphere by matching observed and synthetic photometry. This will provide a determination of the effective temperature of each star and will allow us to express the various observed quantities (color, spectral type, absolute magnitude, etc.) as functions of the effective temperature.
van der Bliek Nicole S.
Wing Robert F.
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