Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-29T05:24:28.741Z Has data issue: false hasContentIssue false
  • English
  • Français

The Ages of the Globular Clusters

Published online by Cambridge University Press:  07 August 2017

Bruce W. Carney
Bruce W. Carney*
Affiliation:
University of North Carolina

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The recent results for the relation between M V and [Fe/H] for RR Lyrae variables and horizontal branch stars are reviewed: < M V(RR) > = 0.15[Fe/H] + 1.08. If [O/Fe] = 0.3, the oldest clusters' ages approach 20 Gyrs, and the the most metal-poor clusters are older than the most metal-rich by several Gyrs. If [O/Fe] ≃ −0.4[Fe/H], the most metal-poor clusters have ages of about 14 Gyrs and the most metal-rich clusters are not much younger. In both cases, there are age spreads among the intermediate metallicity clusters of up to 6 Gyrs.

Keywords

Globular ClustersRR Lyrae Variables
Type
I. The Stellar Populations in the Milky Way
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 15 - 21
Copyright
Copyright © Kluwer 

References

Abia, C., and Rebolo, R. 1989, ApJ, 347, 186.Google Scholar
Barnes, T. G., and Hawley, S. L. 1986, ApJ, 307, L9.Google Scholar
Buonanno, R., Cacciari, C., Corsi, C. E., and Fusi Pecci, F. 1990, A&A, 230, 315.Google Scholar
Buonanno, R., Corsi, C. E., and Fusi Pecci, F. 1990, A&A, 216, 80. (BCF).Google Scholar
Butler, D., Dickens, R. J., and Epps, E. 1978, ApJ, 225, 148.Google Scholar
Cacciari, C., Clementini, G., and Buser, R. 1989b, A&A, 209, 154.Google Scholar
Cacciari, C., Clementini, G., Prevot, L., and Buser, R. 1989a, A&A, 209, 141.Google Scholar
Caputo, F., Martinez Roger, C., and Paez, E. 1987, A&A, 183, 228.Google Scholar
Carney, B. W. 1983, AJ, 88, 623.Google Scholar
Carney, B. W., Storm, J., & Jones, R. V. 1992, ApJ, in press. (CSJ).Google Scholar
Carney, B. W., Storm, J., Trammel, S. R., and Jones, R. V., 1991, PASP, in press.Google Scholar
Fernley, J. A., Skillen, I., Jameson, R. F., Marang, F., Kilkenny, D., and Longmore, A. J. 1990, MNRAS, 247, 287.Google Scholar
Hesser, J. E., Harris, W. E., VandenBerg, D. A., Allwright, J. W. B., Shott, P., and Stetson, P. B. 1987. PASP, 99, 739.Google Scholar
Jones, R. V. 1988, ApJ, 326, 305.Google Scholar
Jones, R. V., Carney, B. W., and Latham, D. W. 1988, ApJ, 332, 206.Google Scholar
Jones, R. V., Carney, B. W., Storm, J., and Latham, D. W. 1992, ApJ, in press.Google Scholar
King, C. R., Demarque, P., and Green, E. M. 1988, in Calibration of Stellar Ages, ed. Philip, A. G. D., (L. Davis Press: Schenectady), p. 211.Google Scholar
Kurucz, R. L. 1979. ApJS, 40, 1.Google Scholar
Laird, J. B., Carney, B. W., and Latham, D. W. 1988, AJ, 95, 1843.Google Scholar
Lee, Y.-W. 1990, ApJ, 363, 159.Google Scholar
Lee, Y.-W., Demarque, P., and Zinn, R. 1990, ApJ, 350, 155.Google Scholar
Liu, T., and Janes, K. A. 1990, ApJ, 354, 273.Google Scholar
Longmore, A. J., Dixon, R., Skillen, I., Jameson, R. F., and Fernley, J. A. 1990, MNRAS, 247, 684.Google Scholar
Lub, J. 1977, , .Google Scholar
Richer, H. B., and Fahlman, G. G. 1987, ApJ, 316, 517.Google Scholar
Sandage, A. 1990, ApJ, 350, 631.Google Scholar
Steigman, G., Gallagher, J. S., and Schramm, D. N. 1989, Comm. Astrophys., 14, 97.Google Scholar
Storm, J., Carney, B. W., and Beck, J. A. 1991, PASP, in press.Google Scholar
Straniero, O., and Chieffi, A. 1991. ApJS, 76, 525.Google Scholar
Strugnell, P., Reid, N., and Murray, C. A. 1986, MNRAS, 220, 413.Google Scholar
Suntzeff, N. B., Kinman, T. D., and Kraft, R. P. 1991, ApJ, 367, 528.Google Scholar
van Albada, T. S., and Baker, N. 1971, ApJ, 169, 311.Google Scholar
VandenBerg, D. A., Bolte, M., and Stetson, P. B. 1990, AJ, 100, 445.Google Scholar