Mathematics – Logic
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...78..363c&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 78, no. 3, June 1989, p. 363-374. Research supported by CONI
Mathematics
Logic
24
Metallicity, Open Clusters, Red Giant Stars, Stellar Luminosity, Stellar Spectrophotometry, Abundance, Chemical Composition, Milky Way Galaxy, Ubv Spectra
Scientific paper
UBV, DDO, and Washinton photometry has been obtained for G and K stars located in or near 22 young and intermediate-age open clusters. Nearly 65 percent of the observed stars are found to have a high probability of being cluster members, while the remaining 35 percent are likely to be red field stars. Five clusters (NGC 2383, NGC 3033, Ruprecht 20, NGC 5168, and NGC 6249) probably do not contain any red giants. Sixteen clusters are found to be nearly solar in composition; three are slightly metal-poor or metal-rich; one (Ruprecht 20) is moderately metal-poor (Fe/H = -0.3); and another (NGC 5617) is moderately metal-rich (Fe/H = 0.3). None of the clusters with derived Washington abundances appear to be enriched in elements of the CNO group.
Claria Juan J.
Lapasset Emilio
~Minniti Dante
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