The Rotation of Bulges

Details The Rotation of Bulges The Rotation of Bulges

2011-01-14

arxiv.org/abs/1101.2714v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Invited talk presented at "Dynamics and Evolution of Disc Galaxies", conference held in Moscow and Pushchino, Russia, May 31 -

Scientific paper

I briefly review early and recent progress concerning the dynamical properties of bulges. I also show results from a study on the kinematics of bulges and disks in edge-on galaxies, where the bulge rotation curve is obtained with little contamination from the disk. I show that a proper structural analysis is crucial to understand such measurements. The results suggest that exponential bulges have a higher degree of rotational support than bulges with higher Sersic indexes, giving support to the concept that photometric bulges include different categories of stellar systems.

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