Strong CN stars in the globular cluster NGC 1851

Details Strong CN stars in the globular cluster NGC 1851 Strong CN stars in the globular cluster NGC 1851

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1470h&link_type=abstract

Astronomical Journal, vol. 87, Nov. 1982, p. 1470-1477. Research supported by the Natural Sciences and Engineering Research Cou

Astronomy and Astrophysics

Astronomy

28

Carbon Stars, Giant Stars, Globular Clusters, Nitrogen, Spectrum Analysis, Stellar Spectra, Abundance, Asymptotic Giant Branch Stars, Radial Velocity, Spectral Resolution, Stellar Evolution, Stellar Spectrophotometry

Scientific paper

Spectroscopic observations made of 23 stars near the southern globular cluster NGC 1851 are presented, yielding spectra with resolutions of approximately 4 A. In performing a spectral analysis, several statements regarding the properties of giant stars in NGC 1851 are determined. First, it is indicated by the radial velocity data that several possible asymptotic-giant-branch or supra-horizontal-branch NGC 1851 stars are nonmembers. In addition, the star S368 appears to be a cluster member. Finally, observations suggest a similarity between the strong CN stars in NGC 1851 and an unusual giant ROA 253, in the globular cluster Omega Cen.

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