Velocity fields of distant galaxies with FORS2 at the VLT

Bodo L. Ziegler; Elif Kutdemir; Cristiano Da Rocha; Asmus Böhm; Wolfgang Kapferer; Harald Kuntschner; Reynier F. Peletier; Sabine Schindler; Miguel Verdugo

arXiv · 0907.5301

Velocity fields of distant galaxies with FORS2 at the VLT

Bodo L. Ziegler·Elif Kutdemir·Cristiano Da Rocha·Asmus Böhm·Wolfgang Kapferer·Harald Kuntschner·Reynier F. Peletier·Sabine Schindler·Miguel Verdugo

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Abstract

We describe a method to efficiently obtain two-dimensional velocity fields of distant, faint and small, emission-line galaxies with FORS2 at the VLT. They are examined for kinematic substructure to identify possible interaction processes. Numerical simulations of tidal interactions and ram-pressure effects reveal distinct signatures observable with our method. We detect a significant fraction of galaxies with irregular velocity fields both in the field and cluster environments.

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Bodo L. Ziegler, Elif Kutdemir, Cristiano Da Rocha, Asmus Böhm, Wolfgang Kapferer, Harald Kuntschner, Reynier F. Peletier, Sabine Schindler, Miguel Verdugo. 2009-07-30. Velocity fields of distant galaxies with FORS2 at the VLT. https://arxiv.org/abs/0907.5301

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