Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288..569c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 15, 1985, p. 569-574. Research supported by the Robert A. Welch F
Astronomy and Astrophysics
Astrophysics
11
Astronomical Models, Chemical Evolution, Galactic Evolution, Milky Way Galaxy, Nuclear Fusion, Stellar Evolution, Cosmic Gases, Gas Density, Quadratic Equations, Stellar Mass, Time Dependence
Scientific paper
Quadratic models of the chemical evolution of the Galaxy for a star formation rate proportional to the square of the gas mass are studied. The search for analytic solutions to the gas mass and star mass for time-dependent rates of gaseous infall onto the disk is examined. The quadratic models are compared to models having linear star formation rates. The mass, metallicity, number of stars, and U-235/U-238 isotopic ratio for the models which are subjected to the same infall rate, the same initial disk mass, and the same final gas fraction are compared. The results of the comparison indicate that: (1) the average dwarf age is greater in the quadratic model, (2) the metallicity grows initially faster in the quadratic model, (3) the quadratic model has a smaller percentage of low-Z dwarfs, and (4) the U-235/U-238 isotopic ratio indicates a younger quadratic model.
No associations
LandOfFree
Galactic chemical evolution and nucleocosmochronology - Analytic quadratic models 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 Galactic chemical evolution and nucleocosmochronology - Analytic quadratic models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galactic chemical evolution and nucleocosmochronology - Analytic quadratic models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-925356