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Harmonic analysis of the Ha velocity field of NGC 4254

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arxiv astro-ph/0512514 v1 pith:VDSFKNJY submitted 2005-12-20 astro-ph

Laurent Chemin , Olivier Hernandez , Chantal Balkowski , Claude Carignan , Philippe Amram This is my paper · ORCID
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keywords analysisclusterfieldharmonicvelocityvirgoaimsanalyzed
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abstract

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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