Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..36....7o&link_type=abstract
ESO Messenger (ISSN 0722-6691), June 1984, p. 7-9.
Astronomy and Astrophysics
Astronomy
1
Astronomical Photometry, Globular Clusters, Milky Way Galaxy, Blue Stars, Galactic Evolution, Halos, Horizontal Branch Stars, Stellar Color, Stellar Magnitude
Scientific paper
The results of a photometric survey of distant and giant globular clusters in the galactic halo are described. About 50 frames in the B and V ranges were obtained in four nights in January 1983. Acceptable imagery of Am-1, Pal 3 and GLC 0423-21 were obtained with good accuracy down to 22 mag. Metal-poor, inner halo clusters exhibited a higher blue HB star population than metal-rich globular clusters with more red stars. It is estimated that the clusters are 100 kpc from the sun.
Gratton Raffaele
Ortolani Sergio
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