Fabry-Pérot Interferometry of Nearby Irregular Dwarf Galaxies

Author(s):  
Janine van Eymeren ◽  
Michel Marcelin ◽  
Dominik J. Bomans
Keyword(s):  
2004 ◽  
Vol 217 ◽  
pp. 526-531
Author(s):  
Philippe Amram ◽  
Fréderic Bournaud ◽  
Pierre-Alain Duc

Several interacting systems exhibit at the tip of their long tidal tails massive condensations of atomic hydrogen, which may be the progenitors of Tidal Dwarf Galaxies. Because, quite often, these tails are observed edge-on, projection effects have been claimed to account for the large HI column densities measured there. Here we show that determining the velocity field all along the tidal features, one may disentangle projection effects along the line of view from real bound structures. Due to its large field of view, high spectral and 2D spatial resolutions, Fabry-Perot observations of the ionized gas are well adapted to detect a kinematical signature of either streaming motions along a bent tidal tail or of in-falling/rotating material associated with a forming TDG. Spectroscopic observations also allow to measure the dynamical masses of the TDGs that are already relaxed and check their dark matter content.


2000 ◽  
Vol 10 (PR8) ◽  
pp. Pr8-251
Author(s):  
L. Menez ◽  
I. Zaquine ◽  
A. Maruani ◽  
R. Frey
Keyword(s):  

1967 ◽  
Vol 28 (C2) ◽  
pp. C2-230-C2-238
Author(s):  
G. I. KATCHEN ◽  
J. KATZENSTEIN ◽  
L. LOVISETTO
Keyword(s):  

1967 ◽  
Vol 28 (C2) ◽  
pp. C2-321-C2-321
Author(s):  
J. V. RAMSAY

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