Type of Document Master's Thesis Author Finch, Charlie Thomas Author's Email Address finch@chara.gsu.edu URN etd-04202007-183626 Title MINIMO: A Search For Mini Proper Motion Stars in the Southern Sky Degree Master of Science Department Physics and Astronomy Advisory Committee
Advisor Name Title Dr. Todd J. Henry Committee Chair Dr. Douglas R. Gies Committee Member Dr. Harold A. McAlister Committee Member Keywords
- Solar Neighborhood
- Statistics
- Distances
- Surveys
- Astrometry
- Stars
- Proper Motion
Date of Defense 2007-04-11 Availability unrestricted Abstract I report 1684 new proper motion systems in the southern sky (declinations -90 degrees to -47 degrees) with 0.50 arcsec/yr > mu >= 0.18 arcsec/yr. This effort is a continuation of the SuperCOSMOS-RECONS (SCR) proper motion search to lower proper motions than reported in Hambly et al. (2004); Henry et al. (2004); Subasavage et al. (2005a,b). Distance estimates are presented for the new systems, assuming that all stars are on the main sequence. I find that 34 systems are within 25 pc, including three systems --- SCR 0838-5855, SCR 1826-6542, and SCR 0630-7643AB --- anticipated to be within 10 pc. These mini-motion (MINIMO) discoveries constitute a more than ten-fold increase in new systems found in the same region of sky searched for systems with mu >= 0.50 arcsec/yr, suggesting a happy hunting ground for new nearby slower proper motion systems in the region just north (declinations -47 degrees to 0 degrees), much of which has not been rigorously searched during previous efforts.Files
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