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News from the "Dentist's Chair": Observations of AM 1353-272 with the VIMOS IFU
The galaxy pair AM 1353-272 nicknamed "The Dentist's Chair" shows two ~30 kpc
long tidal tails. Previous observations using multi-slit masks showed that they
host up to seven tidal dwarf galaxies. The kinematics of these tidal dwarfs
appeared to be decoupled from the surrounding tidal material. New observations
of the tip of the southern tidal tail with the VIMOS integral field unit
confirm the results for two of these genuine tidal dwarfs but raise doubts
whether the velocity gradient attributed to the outermost tidal dwarf candidate
is real. We also discuss possible effects to explain the observational
difference of the strongest velocity gradient seen in the slit data which is
undetected in the new integral field data, but arrive at no firm conclusion.
Additionally, low-resolution data covering most of the two interacting partners
show that the strongest line emitting regions of this system are the central
parts.Comment: Comments welcome, especially ideas to explain the difference between
the two datasets. 5 pages, 3 figures, to appear in "Science Perspectives for
3D Spectroscopy", eds. M. Kissler-Patig, M. M. Roth and J. R. Walsh, ESO
Astrophysics Symposi
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