Statistics – Computation
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mmsai..46....3t&link_type=abstract
(Lectures on Stellar Populations, Scuola Superiore di Astronomia, Erice, Italy, May 20-31, 1974.) Società Astronomica Italiana,
Statistics
Computation
7
Cosmology, Star Distribution, Stellar Evolution, Stellar Spectra, Stellar Structure, Abundance, Andromeda Galaxy, Bibliographies, Chemical Composition, Elliptical Galaxies, Galactic Bulge, Galaxies, Hertzsprung-Russell Diagram, K Stars, Main Sequence Stars, Open Clusters, Stellar Luminosity, Stellar Spectrophotometry, Supernovae, Ubv Spectra
Scientific paper
Techniques and recent developments in the use of population synthesis as a means of studying the evolution of stellar populations and systems are discussed. The method of analyzing the composite light from a particular region of a galaxy is outlined and illustrated with the example of the nuclear-bulge population of M 31. The evolutionary synthesis of single-generation populations is described, and details are given regarding the necessary input data and computational procedures for this technique. Models of open clusters and elliptical galaxies are presented for purposes of illustration. Models for chemical evolution in the solar neighborhood are examined with emphasis on the basic problems of deriving the initial mass function, accounting for the presence of G-K dwarfs, and determining the enrichment rate. The synthesis of populations with more than one generation of stars is considered, and applications of the synthesis procedure are discussed for the problems of determining what kinds of stars become supernovae and of describing the evolution of galaxies on a cosmological scale.-
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