Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290..154l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 290, March 1, 1985, p. 154-170. Research supported by the Science and Engin
Astronomy and Astrophysics
Astrophysics
232
Cosmochemistry, Galactic Evolution, Interstellar Gas, Milky Way Galaxy, Abundance, Gas Flow, Radial Flow, Star Formation Rate, Stellar Evolution, Stellar Structure
Scientific paper
Models are presented for the chemical evolution of the galactic disc with radial inflows of the gas at a velocity constant with time, but that may vary with the galactocentric radius. The models include the infall of metal-free gas from outside the disc at a rate decaying exponentially with time, a star formation rate that varies as the surface density of the gas layer to the power of m, with m = 1 or 2, and in some cases an outer edge to the stellar disc at the star formation cutoff radius. The models are compared with the observed age-metallicity relation and metallicity distribution for stars in the solar neighborhood and with the observed radial variations of the metallicity, the star formation rate, and the surface densities of the gas and stars. Inflow velocities of approximately -(0.5-1.0) km/s are expected.
Fall Michael S.
Lacey Cedric G.
No associations
LandOfFree
Chemical evolution of the galactic disk with radial gas flows 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 of the galactic disk with radial gas flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical evolution of the galactic disk with radial gas flows will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-818903