Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-27T08:17:08.168Z Has data issue: false hasContentIssue false
  • English
  • Français

New Observations of the Beat Cepheid Variable AX Velorum

Published online by Cambridge University Press:  25 April 2016

R.R. Shobbrook  and
D.J. Faulkner
R.R. Shobbrook
Affiliation:
Chatterton Department of Astronomy, University of Sydney
D.J. Faulkner
Affiliation:
Mount Stromlo and Siding Spring Observatories, Australian National University
Get access Rights & Permissions [Opens in a new window]

Extract

Evidence exists for mode energy changes in beat Cepheid variable stars over the 20-30 year interval during which photoelectric observations of the objects have been obtained. For TU Cas, Hodson, Stellingwerf and Cox (1979) have found that the first overtone amplitude has been decreasing with time from 0.4 to 0.25 mag over a 67 year timebase; these authors also included some early visual estimates in their analysis. For U TrA, Faulkner & Shobbrook (1979) have found that the first overtone pulsation has been increasing relative to the fundamental over a twenty year timebase.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 4 , 1982 , pp. 400 - 404
Copyright
Copyright © Astronomical Society of Australia 1982

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barrell, S.L., Mon. Not. R. Astron. Soc, (in press) (1982).Google Scholar
Cox, A.N., Annu. Rev. Astron. Astrophys. 18, 15 (1980).Google Scholar
Faulkner, D.J., and Shobbrook, R.R., Astrophys. J., 232, 197 (1979).Google Scholar
Hodson, S.W., Stellingwerf, R.F., and Cox, A.N., Astrophys. J., 229, 642 (1979).Google Scholar
Mitchell, R.I., Iriarte, B., Steinmetz, D., and Johnson, H.L., Bol. Obs. Tonanzintla Tacubaya, 3, 153 (1964).Google Scholar
Pel, J.W., Astron. Astrophys. Suppl, 24, 413 (1976).Google Scholar
Simon, N.R., Astron. Astrophys., 75, 140 (1979).Google Scholar
Simon, N.R., Cox, A.N., and Hodson, S.W., Astrophys. J., 237, 550 (1980).CrossRefGoogle Scholar
Stellingwerf, R.F., Astrophys. J., 199, 705 (1975).Google Scholar
Stobie, R.S., and Baiona, L.A., Mon. Not. R. Astron. Soc, 188, 595 (1979).Google Scholar
Stobie, R.S., and Hawarden, T., Mon. Not. R. Astron. Soc, 157, 157 (1972).Google Scholar