You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
λ3883 CN Band Strengths for 238 Metal-Poor Halo Giants: Evidence for Chemical Differences Between Globular-Cluster and Halo Field Giants
G. E. Langer, Nicholas B. Suntzeff and Robert P. Kraft
Publications of the Astronomical Society of the Pacific
Vol. 104, No. 677 (1992 July), pp. 523-532
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40679899
Page Count: 10
You can always find the topics here!Topics: Metal abundance, Globular star clusters, Observational astronomy, Carbon, Observational research, Giant stars, Spectral bands, Nitrogen, Asymptotic giant branch stars, Optical observatories
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Cyanogen band strengths m(CN) for 238 metal-poor giants in the halo field and in 13 globular clusters are tabulated. The distribution of w(CN) in field giants of intermediate metallicity is compared with that of giants of similar evolutionary state in M79, M3, and Ml3. The field star population is dominated by weak-CN stars. M79 has mostly giants with CN bands of intermediate strength, M3 has relatively few giants with strong CN bands, and Ml3 is dominated by strong-CN giants. These results add evidence in support of the notion that halo field stars and stars of most globular clusters differ chemically even at equivalent [Fe/H]. In the spectra of giant stars in the very metal-poor clusters Ml5 and M92, CN bands tend to disappear, and become noticeable only in stars having exceptionally large nitrogen abundances.
Publications of the Astronomical Society of the Pacific © 1992 The University of Chicago Press