Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-06-04
Astronomy and Astrophysics
Astrophysics
To appear in the proceedings for "Pathways Through an Eclectic Universe", Editors: Johan Knapen, Terry Mahoney, and Alexandre
Scientific paper
We present two-dimensional Febry-Perot observations of emission-line distribution and kinematics in nearly spiral galaxies. We have developed and demonstrated the utility of a number of analysis tools which have general applicability, but which we have, so far, applied to only one galaxy (M 74, Fathi et al. 2007). In this galaxy, we have found kinematic signatures of radial motions caused by an m=2 perturbation. Such a perturbation may well be responsible for the inflow of material forming the nuclear ring and the inner rapidly rotating disc-like structure. The latter, in turn, could help build a pseudo-bulge. In the second paper in this series, we will apply the kinematic analysis tools to a sample of 9 late-type spiral galaxies observed with the FaNTOmM Fabry-Perot spectrometer at the Canada-France-Hawaii telescope.
Beckman John E.
Carignan Claude
Fathi Kambiz
Hernandez Olivier
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