Mathematics – Logic
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..apr.v8005a&link_type=abstract
American Physical Society, April Meeting, April 29-May 2, 2000 Long Beach, CA, abstract #V8.005
Mathematics
Logic
Scientific paper
Although Beatrice Tinsley's career in astrophysics spanned only the brief period from 1965 to 1981, it was an unusually influential one. Her doctoral dissertation supplied quantitative leverage to the study of distant galaxies and their relevance to cosmology. As galaxies were being observed at distances of billions of light years, particularly in contexts of observational cosmology, it was increasingly important to understand how galaxies must have appeared billions of years ago. Although it had been suspected that galaxies were much more luminous in their earlest epochs than they now appear, a quantitative study of how stellar evolution might drive the spectral evolution of a galaxy had not been attempted. Tinsley's simple computer models not only showed that galaxy evolution superseded the predicted distinctions between alternative cosmological models but also suggested that different types of normal galaxies might be understood as having common ages but different star formation histories. In the years following this controversial beginning, Tinsley contributed enormously to establishing the formalisms for studying the chemical evolution of galactic systems in terms of the formation, evolution and deaths of their component stars. Her seminal article from 1980 on this topic will be discussed, as well as her rich collegial interactions.
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