Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pasp...89..274l&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 89, June-July 1977, p. 274-276.
Astronomy and Astrophysics
Astronomy
9
Giant Stars, Open Clusters, Stellar Spectra, A Stars, Astronomical Catalogs, Hertzsprung-Russell Diagram, Main Sequence Stars, Stellar Evolution, Stellar Magnitude
Scientific paper
Spectral types are given for the 26 brightest stars in the region of NGC
6633. Only two of the giants are definitely cluster members. Two
apparent blue stragglers are present, as well as one extreme Ap star,
four marginal Am stars, and two stars with weak shell lines.
Abt Helmut A.
Levato Hugh
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