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Daytona Beach


Physical Sciences

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We have initiated the faint photometric survey in the Stromgren system covering about 1 square degree and including 1238 objects in order to develop samples which best probe the thick disk population. The catalog of observations are presented here. They were acquired without kinematic or metallicity biases and are complete to V=17.3-18.5, depending on the field, for 810 early to relatively late type stars. Photometric metallicities were derived for 508 stars and indicate a metal-poor stellar population, consistent with a mixture of thick disk and halo stars. While the Stromgren u-band was not part of the survey, follow-up u-band observations of 32 survey objects indicate that intermediate color survey stars are main-sequence or slightly evolved stars, while redder survey stars are giants.

Publication Title

The Astronomical Journal



Institute of Physics