Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984azh....61..245s&link_type=abstract
(Astronomicheskii Zhurnal, vol. 61, Mar.-Apr. 1984, p. 245-251) Soviet Astronomy (ISSN 0038-5301), vol. 28, Mar.-Apr. 1984, p. 1
Astronomy and Astrophysics
Astronomy
3
Andromeda Galaxy, Astronomical Photometry, Globular Clusters, Metallicity, Distance, Milky Way Galaxy
Scientific paper
A definite correlation is found between the apparent galactocentric distance of the globular clusters in M31 and their metallicity parameters, based on a series of photometric observations. At a distance of 10 kpc the radial gradient of the metal abundance for the forbidden line of Fe/H is determined to be around -0.15 per kpc. At larger distances the clusters tend to have a lower but constant metallicity. The presence of a metallicity gradient for the globular cluster subsystems in the Galaxy and in M31 suggests that the two galaxies experienced a similar history of element-heavy-element enrichment during their initial evolution. A graph is presented which describes the variations in the metallicity parameters of the globular clusters in M31 with their apparent distance from the galactic center.
Lyutyj V. M.
Sharov Alexander S.
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