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Internal Kinematics of Modelled Isolated and Interacting Disc Galaxies

Published online by Cambridge University Press:  01 August 2006

T. Kronberger ,
W. Kapferer ,
S. Schindler ,
A. Böhm ,
E. Kutdemir  and
B. L. Ziegler
T. Kronberger
Affiliation:
Institut für Astro – und Teilchenphysik, Technikerstr. 25, 6020 Innsbruck, Austria
W. Kapferer
Affiliation:
Institut für Astro – und Teilchenphysik, Technikerstr. 25, 6020 Innsbruck, Austria
S. Schindler
Affiliation:
Institut für Astro – und Teilchenphysik, Technikerstr. 25, 6020 Innsbruck, Austria
A. Böhm
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
E. Kutdemir
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
B. L. Ziegler
Affiliation:
Institut für Astrophysik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Abstract

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We present a systematic investigation of the velocity fields of both isolated and interacting spiral galaxies in combined N-body/hydrodynamical simulations. Closely mimicking the procedures applied in observations of distant, small, and faint galaxies we extract rotation curves (RCs) and compare the results of the simulation directly to observations. Irregularities in the velocity field reflect disturbances in the gravitational potential of the galaxy. They can be used to trace the recent interaction history of a galaxy and give possible clues to the type of the respective interaction. In addition, identifying disturbances in the RCs is important for Tully-Fisher studies in order to accurately derive the maximum rotation velocity.

Keywords

galaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 216
Copyright
Copyright © International Astronomical Union 2007

References

Kapferer, W., Kronberger, T., Schindler, S., Böhm, A., & Ziegler, B.L., 2006, A&A, 446, 847.Google Scholar
Kronberger, T., Kapferer, W., Schindler, S., Böhm, A., Kutdemir, E., & Ziegler, B.L., 2006, A&A, 458, 69.Google Scholar