Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...159..305k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 159, no. 1-2, April 1986, p. 305-308.
Astronomy and Astrophysics
Astrophysics
4
Magellanic Clouds, Star Clusters, Stellar Spectra, Classifications, M Stars
Scientific paper
Spectral classification of stars brighter than B of about 18.5 mag in 15 SMC clusters was carried out using U.K. Schmidt Telescope objective prism plates. The studied clusters represent all ages of clusters (disk, intermediate and halo) and are located at various areas of the parent galaxy. All classified stars are situated within the tidal radius of each cluster. For comparison, stars in adjoining fields of each cluster were also studied. It was found that M stars are the main contributors of the halo clusters, whereas early type stars are mainly found in disk clusters. M stars are also detected in the disk clusters as it is expected from their HR diagrams. A significant number of carbon stars were found in two (out of three) intermediate age clusters. Carbon stars were also detected in the regions of the halo clusters L8 and L59 and of the disk cluster L16. The ratios of C to M stars derived here strengthened the assumption that there is a deficiency of M type stars in the SMC.
Dapergolas A.
Kontizas Evangelista
Kontizas Mary
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