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Central DM density cuspiness in LSB's: a stellar kinematics approach

Published online by Cambridge University Press:  26 May 2016

A. Pizzella
Affiliation:
Dipartimento di Astronomia, Universitá di Padova, Italy
E.M. Corsini
Affiliation:
Dipartimento di Astronomia, Universitá di Padova, Italy
F. Bertola
Affiliation:
Dipartimento di Astronomia, Universitá di Padova, Italy
L. Coccato
Affiliation:
Dipartimento di Astronomia, Universitá di Padova, Italy
J. Magorrian
Affiliation:
Physics Department, University of Oxford, UK
M. Sarzi
Affiliation:
Physics Department, University of Oxford, UK
J.G. Funes
Affiliation:
Vatican Observatory, Tucson, USA

Abstract

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We present preliminary results from spectroscopic observations of a sample of 11 low surface brightness galaxies (LSB). We measured the stellar and gaseous kinematics along their major and minor axes. Such information will allow us to accurately investigate the dark matter (DM) content within their optical regions, providing further constraints on the predictions of standard CDM models. Although dynamical modeling is still in progress, our observations already show that the derived stellar kinematics is more regular than the ionized gas one, which often shows evidence for non-circular and asymmetric motions.

Type
Part 10: Low Surface Brightness Galaxies
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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