Elemental Abundances of Red Giants in Omega Centauri from High Resolution Spectra

Details Elemental Abundances of Red Giants in Omega Centauri from High Resolution Spectra Elemental Abundances of Red Giants in Omega Centauri from High Resolution Spectra

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.3602s&link_type=abstract

American Astronomical Society Meeting 206, #36.02; Bulletin of the American Astronomical Society, Vol. 37, p.488

Astronomy and Astrophysics

Astronomy

Scientific paper

Elemental abundances derived from high-resolution (R=20000) spectroscopy of about 100 red giants in the globular cluster Omega Centauri are presented. Data were obtained in July 2003 using the Hydra fiber spectrograph on the Blanco 4-m telescope at the Cerro Tololo Interamerican Observatory. Observations with spectral coverage from 6500-6800 A were made using the 3161/ mm echelle grating and the SITe 2048x4096 pixel CCD. Only stars from among the population in the upper two magnitudes (brighter than V=14) of the giant branch were selected for observation. Subsets of stars at the blue and red ends (0.90This work has been supported by the National Science Foundation under grant AST-1039617 (to the REU program at Indiana University).

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