Radial abundance gradients along the Milky Way disk

Details Radial abundance gradients along the Milky Way disk Radial abundance gradients along the Milky Way disk

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pabei..19...68h&link_type=abstract

Progress in Astronomy, Vol. 19, No. 1, p. 68 - 81 (2001)

Astronomy and Astrophysics

Astronomy

3

Galaxy: Elements, Galactic Disk, Chemical Evolution

Scientific paper

Detailed summary of the observed abundance gradients along the Galactic disk was presented, including H II regions, early B stars, PN objects and open clusters. Variations of the gradients in space and time were discussed. According to the current observational status, it is not clear whether the abundance gradient is gradually flatten or steepen during the evolution of the Galactic disk. Theoretical predictions for gradients evolutions of various models were presented. The physical processes which result in the gradient and its evolution are explored. The evolution of abundance gradients is found to be very sensitive to the stellar yields, model assumptions on star formation history, infall and also to the relative importance between SFR and infall.

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