Harmonic analysis of the Ha velocity field of NGC 4254

Details Harmonic analysis of the Ha velocity field of NGC 4254 Harmonic analysis of the Ha velocity field of NGC 4254

2005-12-20

arxiv.org/abs/astro-ph/0512514v1

Astronomy and Astrophysics

Astrophysics

3 pages, 2 figures, to appear in "Science Perspectives for 3D Spectroscopy", ESO Astrophysics Symposia, M. Kissler-Patig, M.M.

Scientific paper

The ionized gas kinematics of the Virgo Cluster galaxy NGC 4254 (Messier 99)
is analyzed by an harmonic decomposition of the velocity field into Fourier
coefficients. The aims of this study are to measure the kinematical asymmetries
of Virgo cluster galaxies and to connect them to the environment. The analysis
reveals significant $m=1,2,4$ terms which origins are discussed.

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