Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-25T23:31:55.260Z Has data issue: false hasContentIssue false
  • English
  • Français

Infra-red Observations of Globular Cluster Giants

Published online by Cambridge University Press:  25 April 2016

A.L. Brooke
A.L. Brooke*
Affiliation:
Mount Stromlo Observatory, Australian National University, Canberra
Get access Rights & Permissions [Opens in a new window]

Extract

This paper presents a progress report on a programme of infra-red photoelectric photometry of the red giant sequences in some southern globular clusters. As measured in B and V these sequences are known to differ from cluster to cluster, at least one contributing factor being differential line-blanketing arising from variations in metal abundance. Observations in R and I should be substantially free of blanketing, and so enable us to eliminate this factor, clarifying the situation and making possible a more accurate transformation of the observations to the Mbol, log Tett plane. The difficulty of making this transformation has been a major obstacle in comparing observations and theory for cluster giants.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 3 , February 1968 , pp. 83 - 84
Copyright
Copyright © Astronomical Society of Australia 1968

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

1 Johnson, H.L., Mitchell, R.I., Iriarte, B., and Wisneiwski, W.Z., Comm. Lunar & Planet. Lab., 4, 99 (1966).Google Scholar
2 Searle, L., and Rodgers, A.W., Ap. J., 143, 809 (1966).CrossRefGoogle Scholar
3 Woolley, R. v.d. R., Alexander, J.B., Mather, Linda, and Epps, Elizabeth, Roy. Obs. Bull., 43 (1961).Google Scholar
4 Dickens, R.J. and Woolley, R. v.d. R., Roy. Obs. Bull., 128 (1967).Google Scholar
5 Sandage, A.R., Observatory, 84, 245 (1964).Google Scholar
6 Eggen, O.J. and Sandage, A.R., Ap. J., 140, 130 (1964).CrossRefGoogle Scholar
7 Johnson, H.L., Ap. J., 146, 613 (1966).CrossRefGoogle Scholar
8 Eggen, O.J., Ap. J. Suppl., 14, 341 (1967).CrossRefGoogle Scholar
9 Johnson, H.L., Ann. Rev. Astron. Astrophys., 4, 193 (1966).CrossRefGoogle Scholar
10 Johnson, H.L., Bol. Ton. Tac., 3, 305 (1964).Google Scholar
11 Demarque, P., and Geisler, J.E., Ap. J., 137, 1102 (1962).CrossRefGoogle Scholar