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The boxy bulge and stellar bar of the Milky Way

Published online by Cambridge University Press:  01 July 2007

T. J. Mahoney ,
M. López-Corredoira ,
A. Cabrera-Lavers ,
P. L. Hammersley ,
C. González-Fernández  and
F. Garzón
T. J. Mahoney
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain email: tjm@iac.es
M. López-Corredoira
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain email: tjm@iac.es
A. Cabrera-Lavers
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain email: tjm@iac.es
P. L. Hammersley
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain email: tjm@iac.es
C. González-Fernández
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain email: tjm@iac.es
F. Garzón
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain email: tjm@iac.es
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Abstract

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We describe the boxy bulge, long stellar bar and elliptical ring of the Galaxy. This model has largely evolved from NIR survey work by many teams and differs from other models with a monolithic ellipsoidal bulge. We maintain that the structure of the inner Galaxy can only be properly studied by adequately sampling the entire Galactic plane for |l| < 30°, |b| < 1.5°, and that the bulge is best studied at least 3° from the plane. We briefly report a slight radially outwardly increasing metallicity gradient along the bar and reaffirm de Vaucouleurs & Pence's (1978) suggestion that the Galaxy is probably of morphological type SAB(rs)bc II.

Keywords

Galaxy: bulgeGalaxy: stellar contentGalaxy: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 343 - 346
Copyright
Copyright © International Astronomical Union 2008

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