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Evidence for Primordial Abundance Variations in the Globular Cluster 47 Tuc

Published online by Cambridge University Press:  07 August 2017

B.F.W. Croke ,
R.A. Stathakis ,
R.D. Cannon ,
J.E. Hesser  and
R.A. Bell
B.F.W. Croke
Affiliation:
IESL-FORTH and the University of Crete
R.A. Stathakis
Affiliation:
Anglo-Australian Observatory
R.D. Cannon
Affiliation:
Anglo-Australian Observatory
J.E. Hesser
Affiliation:
Dominion Astrophysical Observatory
R.A. Bell
Affiliation:
University of Maryland

Extract

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The FOCAP multi-object system on the Anglo-Australian Telescope (AAT) has been used to observe 35 faint stars (V > 18, Mv > + 4.6) and 83 stars with V < 18 in 47 Tuc. The large sample of stars well below the turnoff permits us to examine abundance variations in relatively unevolved stars for the first time. Our spectral resolution (2.7Å) is greater than that used in previous studies.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 164: Stellar Populations , 1995 , pp. 396
Copyright
Copyright © Kluwer 1995