Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..396..165t&link_type=abstract
Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at
Astronomy and Astrophysics
Astronomy
Scientific paper
We explore the elemental abundance features of metal-rich disk stars, highlighting the comparisons made with those of the recently revealed Galactic bulge stars. A similarity between two of the comparisons leads to a new theoretical picture of the bulge-disk connection in the Galaxy, where a supermassive black hole resides at the center. We propose that the observational facts of (1) elemental abundance features of metal-rich disk stars characterized by an upturn seen for some elements, and (2) the extended metal-rich tail up to super solar metallicity in the abundance distribution function of disk stars are evidence that an infall outside the disk region is dominated by the gas ejected by the bulge for the recent period of five billion years.
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