Evolution of the Galaxy - Correlation between the metal abundance and orbital elements of disk stars

Details Evolution of the Galaxy - Correlation between the metal abundance and orbital elements of disk stars Evolution of the Galaxy - Correlation between the metal abundance and orbital elements of disk stars

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978pazh....4..531m&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 4, Dec. 1978, p. 531-535.) Soviet Astronomy Letters, vol. 4, Nov.-Dec. 1978, p. 285-287

Astronomy and Astrophysics

Astronomy

2

Galactic Evolution, Metallic Stars, Milky Way Galaxy, Orbital Elements, Abundance, Chemical Evolution, Disks, Gravitational Collapse, Iron

Scientific paper

Detailed analysis of three samples of galactic disk stars whose metallicity (Fe/H) has been determined yields a correlation between Fe/H and the orbital elements - eccentricity and angular momentum. The correlation suggests that the metal abundance in the Galaxy rose systematically while the disk populations were being formed, and that the Galaxy continued to collapse during this phase of its evolution. These results afford a unified explanation of the chief kinematic properties of the subsystems in the Galaxy, with no need to invoke relaxation processes.

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