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Search for Low-Amplitude Stellar Motions in NGC 752 1

  • Samuel C. Barden (a1), Catherine A. Pilachowski (a2), Constantine Deliyannis (a2), Robert Mathieu (a3), Soeren Meibom (a3) and Dianne Harmer (a4)...

Abstract

We report preliminary results of a radial velocity study of the old open cluster NGC 752 using an ensemble mean approach with Hydra multi-fiber spectroscopy on the 3.5-m WIYN telescope. The goal is to detect the higher amplitude extra-solar planetary systems and brown dwarf binaries that might reside in the cluster. The oscillation modes of mid-F stars at the redward edge of the instability strip can also be observed. The observation of NGC 752 is the first step in an ongoing study of a variety of clusters with different ages and metallicities.

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Copyright

References

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Daniel, Scott A., Latham, David W., Mathieu, Robert D., Twarog, Bruce A. et al. 1994, PASP, 106, 281.
Liu, Michael C., Fischer, Debra A., Graham, James R., Lloyd, James P., Marcy, Geoff W., & Butler, R. Paul 2002, ApJ, 571, 519.
Marcy, G. W., Cochran, W. D., & Mayor, M. 2000, in Protostars and Planets IV, Mannings, V., Boss, B. P., and Russell, S. S., eds.; the University of Arizona Press (Tucson); p. 1285.
Pilachowski, Catherine A., Willmarth, Daryl W., Mathieu, Robert D., Latham, David W., Booth, John, & Armandroff, Taft 1989, PASP, 101, 991.
Schiller, S. J., & Milone, E. 1988, AJ, 95, 1466.

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