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Gas and Stellar Kinematics in NGC 6240

Published online by Cambridge University Press:  13 May 2016

Matthias Tecza ,
Linda Tacconi  and
Reinhard Genzel
Matthias Tecza
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, D-85741 Garching, Germany
Linda Tacconi
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, D-85741 Garching, Germany
Reinhard Genzel
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, D-85741 Garching, Germany

Abstract

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We present results from sub-arcsecond near infrared integral field spectroscopy and millimeter IRAM-interferometry of the interacting galaxy NGC 6240. Using stellar absorption features in the NIR we determined the stellar velocity field and dispersion in NGC 6240. The two NIR emission peaks show rapid rotation and indicate a prograde encounter of the two progenitor galaxies. From the velocity dispersion an excess mass between the two nuclei is detected. This mass can be attributed to a massive rotating disk of cold CO gas located between the nuclei.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 220 - 221
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Tecza, M., Genzel, R., Tacconi, L. J., Anders, S., Tacconi-Garman, L. E. & Thatte, N. 2000, ApJ, 537, 178.CrossRefGoogle Scholar
Tacconi, L. J., Genzel, R., Tecza, M., Gallimore, J. F., Downes, D. & Scoville, N. Z. 1999, ApJ, 524, 732.CrossRefGoogle Scholar