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The Chemical Abundances of the Halo Clusters of the Galaxy

Published online by Cambridge University Press:  14 August 2015

R. Canterna  and
R. A. Schommer
R. Canterna
Affiliation:
University of Washington
R. A. Schommer
Affiliation:
University of Washington

Extract

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Photometric metal abundances of individual red giants in eight extremely distant halo globular clusters and the Draco and Ursa Minor dwarf spheroidal galaxies have been obtained using the Washington broad-band system, C, M, T1, T2 (Canterna 1976). Observations were made at the KPNO 2.1-m and CTIO 1.5-m telescopes. In Table I we list for each system the mean value of [Fe/H], the number of stars observed in each system, n, the Galactocentric distance, RGC, the intrinsic color of the giant branch at the level of the horizontal branch (HB), (B-V)o,g, and the fraction of HB stars bluer than the RR Lyrae gap, fB. Sources for unpublished color-magnitude diagram (CMD) data are: Pal 11 (Canterna and Schommer), Pal 12 (Canterna and Harris), and Ursa Minor (Schommer, Olszewski and Kunkel).

Type
Part IV: HR Diagrams, Clusters
Information
Symposium - International Astronomical Union , Volume 80: The HR Diagram , 1978 , pp. 177 - 182
Copyright
Copyright © Reidel 1978 

References

Bond, H.E. (1977). Private communication.Google Scholar
Butler, D. (1975). Publ. Astr. Soc. Pacific 87, 559.Google Scholar
Canterna, R. (1976). Astron. J. 81, 228.Google Scholar
Canterna, R. and Schommer, R.A. (1977). Astrophys. J. in press.Google Scholar
Castellani, V. (1975). Mon. Not. R. Astron. Soc. 172, 59.Google Scholar
Cowley, A.P., Hartwick, F.D.A. and Sargent, W.L.W. (1977). preprint.Google Scholar
Dickens, R.J. and Bell, R.A. (1976). Astrophys. J. 207, 506.Google Scholar
Harris, W.E. (1976). Astron. J. 81, 1095.Google Scholar
Hartwick, F.D.A. (1976). Astrophys. J. 209, 418.Google Scholar
Hartwick, F.D.A. and McClure, R.D. (1972). Astrophys J. 176, L57.Google Scholar
Hartwick, F.D.A. and McClure, R.D. (1974). Astrophys. J. 193, 321.Google Scholar
Racine, R. and Harris, W.E. (1975). Astrophys. J. 196, 413.Google Scholar
Rood, R. (1973). Astrophys. J. 184, 841.Google Scholar
Sandage, A.R. and Wildey, R. (1967). Astrophys. J. 150, 469.Google Scholar
Searle, L. (1977). In The Evolution of Galaxies and Stellar Populations. Tinsley, B.M. and Larson, R.D., eds., Yale Univ. Obs., New Haven, p. 219.Google Scholar
Sneden, C. (1974). Astrophys. J. 189, 493.Google Scholar
Wallerstein, G., Greenstein, J.L., Parker, R., Heifer, H.L. and Aller, L.H. (1963). Astrophys. J. 137, 280.Google Scholar