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Galactic Cepheid Kinematics as a Probe of Large Scale Non-Axisymmetry of the Galaxy

Published online by Cambridge University Press:  15 February 2018

J. A. R. Caldwell ,
C. Koen ,
I. M. Avruch ,
M. R. Metzger ,
P. L. Schechter  and
M. J. Keane
J. A. R. Caldwell
Affiliation:
, South African Astronomical Obs., P.O.Box 9, Observatory 7935, S. Africa
C. Koen
Affiliation:
, South African Astronomical Obs., P.O.Box 9, Observatory 7935, S. Africa
I. M. Avruch
Affiliation:
Massachusetts Inst. of Technology, Cambridge MA, 02139, U.S.A.
M. R. Metzger
Affiliation:
Massachusetts Inst. of Technology, Cambridge MA, 02139, U.S.A.
P. L. Schechter
Affiliation:
Massachusetts Inst. of Technology, Cambridge MA, 02139, U.S.A.
M. J. Keane
Affiliation:
Massachusetts Inst. of Technology, Cambridge MA, 02139, U.S.A.

Abstract

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We investigate whether the currently available Galactic Cepheid kinematic data can put interesting constraints on large scale low amplitude non-axisymmetry of the Galactic plane rotation pattern. In this connection we address the experimental design problem of where in the Galactic plane additional Cepheids would prove the most useful for the axisymmetric and the non-axisymmetric modeling of the kinematics.

Type
Variable Stars as Distance Indicators
Information
International Astronomical Union Colloquium , Volume 139: New Perspectives on Stellar Pulsation and Pulsating Variable Stars , 1993 , pp. 95 - 101
Copyright
Copyright © Cambridge University Press 1993

References

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