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Gas kinematics of a sample of five Hickson Compact Groups. The data

Abstract : We present Fabry Perot observations of galaxies in five Hickson Compact Groups: HCG 10, HCG 19, HCG 87, HCG 91 and HCG 96. We observed a total of 15 galaxies and we have detected ionized gas for 13 of them. We were able to derive 2D velocity, monochromatic, continuum maps and rotation curves for the 13 objects. Almost all galaxies in this study are late-type systems; only HCG 19a is an elliptical galaxy. We can see a trend of kinematic evolution within a group and among different groups - from strongly interacting systems to galaxies with no signs of interaction - HCG 10 exhibits at least one galaxy strongly disturbed; HCG 19 seems to be quite evolved; HCG 87 does not show any sign of merging but a possible gas exchange between two galaxies; HCG 91 could be accreting a new intruder; HCG 96 exhibits past and present interactions.
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Submitted on : Wednesday, September 28, 2022 - 4:14:22 PM
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Philippe Amram, Henri Plana, Claudia Mendes de Oliveira, Chantal Balkowski, J. Boulesteix. Gas kinematics of a sample of five Hickson Compact Groups. The data. Astronomy and Astrophysics - A&A, 2003, 402, pp.865-877. ⟨10.1051/0004-6361:20030034⟩. ⟨hal-03785902⟩



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