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The position angle of the Galactic bulge

Published online by Cambridge University Press:  01 July 2007

A. Vallenari ,
S. Ragaini  and
G. Bertelli
A. Vallenari
Affiliation:
INAF, Padova Astronomical Observatory, vicolo Osservatorio 5, I-35122, Padova, Italy email: antonella.vallenari@oapd.inaf.it, silvia.ragaini@oapd.inaf.it, gianpaolo.bertelli@oapd.inaf.it
S. Ragaini
Affiliation:
INAF, Padova Astronomical Observatory, vicolo Osservatorio 5, I-35122, Padova, Italy email: antonella.vallenari@oapd.inaf.it, silvia.ragaini@oapd.inaf.it, gianpaolo.bertelli@oapd.inaf.it
G. Bertelli
Affiliation:
INAF, Padova Astronomical Observatory, vicolo Osservatorio 5, I-35122, Padova, Italy email: antonella.vallenari@oapd.inaf.it, silvia.ragaini@oapd.inaf.it, gianpaolo.bertelli@oapd.inaf.it
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Abstract

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We present a study of the structure of the Galactic Bulge in the region −6° < b < 3°,−17° < l < 17° using 2MASS archive data. More than 100 fields are used. We make use of the red clump method to derive the distance of the Bulge in the studied regions. We derive a position angle of the Galactic Bulge going from 42° ± 11 to 35° ± 10 depending on the adopted bulge mass distribution.

Keywords

Galaxy: structureGalaxy: stellar contentstars: mass function
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 371 - 376
Copyright
Copyright © International Astronomical Union 2008

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