A new CH star in the globular cluster omega Centauri

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Photography, Globular Clusters, Late Stars, Stellar Spectra, Carbon 13, Spectral Bands, Ubv Spectra

Scientific paper

A photograph of omega Centauri made with a transmission-grating slitless spectrograph has revealed a new CH star near the center of this globular cluster. The star's radial velocity is found to be consistent with cluster membership, and a visual absolute magnitude of -1.8 is derived. The total number of carbon stars now known in globular clusters is three, all of which are in omega Cen.

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