Spectroscopic comparison of open clusters. II - The reddening, blanketing, and metallicity of NGC 2264

Details Spectroscopic comparison of open clusters. II - The reddening, blanketing, and metallicity of NGC 2264 Spectroscopic comparison of open clusters. II - The reddening, blanketing, and metallicity of NGC 2264

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apjs...41..119b&link_type=abstract

Astrophysical Journal Supplement Series, vol. 41, Sept. 1979, p. 119-130.

Other

14

Early Stars, Interstellar Matter, Metallic Stars, Open Clusters, Red Shift, Stellar Spectra, Abundance, Balmer Series, Iron, Stellar Atmospheres, Stellar Envelopes, Stellar Gravitation, Stellar Luminosity, Ubv Spectra

Scientific paper

The spectral quantification procedure is used to determine the ratios of the metallic line blanketing of selected members of the young open cluster NGC 2264 to that of Hyades and Coma Cluster members. Intrinsic colors are determined by two independent analyses, one involving the Balmer lines and the other involving metallic features. The internal scatter in the determinations of both Fe/H and intrinsic colors is found to be remarkably small. Several interesting correlations are discovered which provide information on the nature of pre-main-sequence stars and demonstrate the value of quantitative spectroscopy even at moderate resolution. Specifically, the results show that: (1) the metallicity of NGC 2264 is the same as that of the Coma Cluster to within a few hundredths dex; (2) there is not evidence of an increase in the heavy-element abundance at the sun's galactocentric distance during the last 5 billion years; and (3) B-V color excesses are correlated with the distance (in magnitude) of an NGC 2264 member above the main sequence.

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