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Title:
Differential population synthesis of early-type galaxies. I - Spectrophotometric atlas of synthesis standard spectra
Authors:
Pickles, A. J.
Affiliation:
AA(Mount Stromlo and Siding Spring Observatories, Canberra, Australia)
Publication:
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 59, Sept. 1985, p. 33-61. (ApJS Homepage)
Publication Date:
09/1985
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
GALAXIES, STELLAR SPECTROPHOTOMETRY, ELECTROPHOTOMETRY, METALLICITY, SPECTRAL LINE WIDTH, STELLAR COLOR, STELLAR SPECTRA, TABLES (DATA)
DOI:
10.1086/191061
Bibliographic Code:
1985ApJS...59...33P

Abstract

Continuous spectrophotometry has been obtained for 200 objects at a resolution of 10-17 A over the wavelength region 3600-10,000 A. Kron-Cousins BVRI colors are computed from the spectra and compared with published photoelectric photometry. The (V - R)C color index is used to group the individual observations to form synthesis standard spectra for 48 common spectral types. The standard groups include a solar abundance sequence of most spectral types and luminosity classes, metal-rich and metal weak G - K giant-branch sequences, and horizontal-branch giants. The variations with color, luminosity, and metallicity of several prominent line strengths are discussed. The spectral atlas is available as a FITS magnetic tape.

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