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A Deep Luminosity Function for 47 Tucanae

Published online by Cambridge University Press:  04 August 2017

William E. Harris  and
James E. Hesser
William E. Harris
Affiliation:
Department of Physics, McMaster University, Hamilton, Ontario, L8S 4M1 Canada
James E. Hesser
Affiliation:
Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, Victoria, B.C. V8X 4M6 Canada

Extract

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CCD photometry in B and V reaching B(lim) ≃ 25 has been employed to obtain the luminosity function and color-magnitude diagram for the main sequence of 47 Tuc. For 5<Mv<10 we find that its LF is essentially flat (Δlog n/Δm~0). The CMD is successfully matched by isochrones with [Fe/H] = −0.5 and t ≃ 15 × 109y.

Type
May 29: Observations of Globular Clusters
Information
Symposium - International Astronomical Union , Volume 113: Dynamic of Stars Clusters , 1985 , pp. 81 - 83
Copyright
Copyright © Reidel 1985 

References

Da Costa, G.S.: 1982, Astron. J. 87, 990.CrossRefGoogle Scholar
Hesser, J.E., and Hartwick, F.D.A.: 1977, Ap. J. Suppl. 33, 361.CrossRefGoogle Scholar
Vanden Berg, D.A.: 1984, in preparation. See also Ap. J. Suppl. 51, 29 (1983).CrossRefGoogle Scholar