Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238.1121e&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, June 1, 1989, p. 1121-1158.
Astronomy and Astrophysics
Astronomy
21
Dwarf Stars, Hubble Space Telescope, Stellar Color, Stellar Spectrophotometry, Subgiant Stars, Abundance, Brightness Distribution, Globular Clusters, Interstellar Extinction, Metallicity, Stellar Magnitude
Scientific paper
Synthetic spectra for effective temperatures of 4000-7250 K, logarithmic surface gravities typical of dwarfs and subgiants, and metallicities from solar values to 0.001 of the solar metallicity were used to derive a grid of synthetic surface brightness magnitudes for 21 of the Hubble Space Telescope Wide Field Camera (WFC) band passes. The absolute magnitudes of these 21 band passes are also obtained for a set of globular cluster isochrones with different helium abundances, metallicities, oxygen abundances, and ages. The usefulness and efficiency of different sets of broad and intermediate bandwidth WFC colors for determining ages and metallicities for globular clusters are evaluated.
Bell Roger A.
Edvardsson Bengt
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