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Detectability of Galactic Kinematical Parameters from Proper Motions

Published online by Cambridge University Press:  07 August 2017

R.L. Smart  and
M.G. Lattanzi
R.L. Smart
Affiliation:
Space Telescope Science Institute
M.G. Lattanzi
Affiliation:
Space Telescope Science Institute, Affiliated with the Astrophysics Division, SSD, ESA; on leave from Oss. Astr. di Torino

Abstract

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We discuss the inclusion of a warp structure (as discussed by Miyamoto et al. 1993) to a realistic galactic model. We investigate how the proper motions are effected by changes in the inclination, phase angle and spin velocity of the warp. It is shown that accurate proper motions of disk stars do reflect the variation of warp parameters. A simulation of OB stars with an apparent magnitude limit of 7.0, mimicing the early type content of the HIPPARCOS catalogue, indicates that variations of phase are probably not observable while detection of velocity variation is within the limit of the current precision.

Type
2. Current and Future Needs for Very Accurate Astrometry
Information
Symposium - International Astronomical Union , Volume 166: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry , 1995 , pp. 233 - 237
Copyright
Copyright © Kluwer 1995 

References

Mihalas, D. and Binney, J., 1981, Galactic Astronomy, W.H. Freeman, San Francisco.Google Scholar
Gilmore, G., 1983. Mon. Not. R. astr. Soc., 207, 223.Google Scholar
Gilmore, G., and Wyse, R. F. G., 1985. AJ, 90, 2015.Google Scholar
Bahcall, J. N., and Soneira, R. M. 1980. ApJS, 44, 73.Google Scholar
Miyamoto, M., Soma, M., and Yoshizawa, M. 1993. AJ, 105, 2138.Google Scholar
Sparke, L.S., 1993. Back to the Galaxy, Aip Conf. 278, eds Holt, S. and Verter, F. Google Scholar