Mathematics – Logic
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...216..548t&link_type=abstract
Astrophysical Journal, Part 1, vol. 216, Sept. 1, 1977, p. 548-559. Research supported by the Alfred P. Sloan Foundation
Mathematics
Logic
49
Abundance, Chemical Evolution, Galactic Evolution, Interstellar Chemistry, Stellar Evolution, Astronomical Models, Deuterium, Helium Isotopes, Solar System
Scientific paper
Numerical models for chemical evolution in the solar neighborhood which incorporate constraints based on time scales and which predict time-dependent abundance trends and nucleochronological age parameters are used to supplement several conclusions already indicated by analytical approximations and a variety of existing detailed models. Three numerical models are analyzed which involve, respectively, an infall rate approximately equal to the net stellar birth rate, a cutoff of gas infall at some specific early time, and prompt initial enrichment by a burst of massive stars. The evolution of mean metal-abundance parameters in the various models is compared, possible modifications of the models considered are discussed, and the evolution of helium and deuterium is followed in cases with primordial abundances in the infalling gas and no destruction of He-3 in stellar envelopes. Relations between mean ages and abundance ratios are computed for a number of long-lived radionuclides in order to assess nucleochronology as a tool in studies of galactic evolution.
No associations
LandOfFree
Chemical evolution in the solar neighborhood. III - Time scales and nucleochronology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chemical evolution in the solar neighborhood. III - Time scales and nucleochronology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical evolution in the solar neighborhood. III - Time scales and nucleochronology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1092938