Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.207..185c&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 207, March 1, 1984, p. 185-191.
Astronomy and Astrophysics
Astronomy
30
Galactic Structure, Globular Clusters, Milky Way Galaxy, Stellar Evolution, Brightness, Eccentric Orbits, Metallicity
Scientific paper
The evaporative and tidal disruption of proto-globular clusters has been analysed taking into account the influence of galactocentric distances. The authors confirm that current theories agree with the survival of present globular clusters, although they do not explain the observed lack of massive bright clusters more distant than 13 kpc. For these remote clusters the authors find evidence for surface brightness decreasing with the cluster metallicity, at variance with the inner halo clusters. If such a behaviour is taken into account, the whole globular clusters' system appears fully compatible with the theoretical predictions about disruption. The authors suggest that present distant clusters might represent the survival of the first extremely metal-poor (Population III?) galactic substructures.
Caputo Filippina
Castellani Vittorio
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