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The nature of the Galactic bulge: A view from bulge planetary nebulae and globular clusters

Published online by Cambridge University Press:  30 August 2012

Alexander F. Kholtygin ,
Yulia V. Milanova ,
Igor' I. Nikiforov  and
Olga V. Vasyakina
Alexander F. Kholtygin
Affiliation:
Sobolev Astronomical Institute, Saint Petersburg State University, Universitetskij pr. 28, Staryj Peterhof, Saint Petersburg 198504, Russia email: [email protected]
Yulia V. Milanova
Affiliation:
Sobolev Astronomical Institute, Saint Petersburg State University, Universitetskij pr. 28, Staryj Peterhof, Saint Petersburg 198504, Russia email: [email protected]
Igor' I. Nikiforov
Affiliation:
Sobolev Astronomical Institute, Saint Petersburg State University, Universitetskij pr. 28, Staryj Peterhof, Saint Petersburg 198504, Russia email: [email protected]
Olga V. Vasyakina
Affiliation:
Sobolev Astronomical Institute, Saint Petersburg State University, Universitetskij pr. 28, Staryj Peterhof, Saint Petersburg 198504, Russia email: [email protected]
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Abstract

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Modern data concerning the planetary nebulae (PNe) in the bulge, bar and disk of the Milky Way are used to study the chemical history of bulge. We show that the abundance pattern is similar for PNe in the bulge and Peimbert's type II PNe. We also found that the globular clusters (GCs), especially their metal-rich disk subsystem, form on metallicity maps a bar-like structure which parameters are very close to those for the Galactic bar. These results evidence an old age of the Galactic bulge and bar. We propose a scenario of the successive star formation in the bulge, bar and thin disk.

Keywords

Planetary nebulae: generalglobular clusters: generalGalaxy: bulge
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 408 - 409
Copyright
Copyright © International Astronomical Union 2012

References

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