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Internal kinematics of spiral galaxies in distant clusters. Part II. Observations and data analysis

K. Jaeger·B. L. Ziegler·A. Boehm·J. Heidt·C. Moellenhoff·U. Hopp·R. H. Mendez·S. Wagner
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Abstract

We have conducted an observing campaign with FORS at the ESO-VLT to explore the kinematical properties of spiral galaxies in distant galaxy clusters. Our main goal is to analyse transformation- and interaction processes of disk galaxies within the special environment of clusters as compared to the hierarchical evolution of galaxies in the field. Spatially resolved MOS-spectra have been obtained for seven galaxy clusters at 0.3 2 hours we reach an S/N>5 in the emission lines appropriate for the deduction of the galaxies' internal rotation velocities from [OII], Hbeta, or [OIII] profiles. Preselection of targets was done on the basis of available redshifts as well as from photometric and morphological information gathered from own observations, archive data, and from the literature. Emphasis was laid on the definition of suitable setups to avoid the typical restrictions of the standard MOS unit for this kind of observations. In total we assembled spectra of 116 objects of which 50 turned out to be cluster members. Position velocity diagrams, finding charts as well as tables with photometric, spectral, and structural parameters of individual galaxies are presented.

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K. Jaeger, B. L. Ziegler, A. Boehm, J. Heidt, C. Moellenhoff, U. Hopp, R. H. Mendez, S. Wagner. 2004-06-01. Internal kinematics of spiral galaxies in distant clusters. Part II. Observations and data analysis. https://doi.org/10.1051/0004-6361%3A20035937

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