Tidal Debris in Giant Galaxies Interactions
Irapuan Rodrigues, Horacio Dottori and Felix Mirabel

  Brief program summary and its significance:
Colisions between giant galaxies may eject stars and gas
to intergalactic space. The debris ejected from colliding 
systems can form globular clusters as well as objects as 
massive as dwarf galaxies can be found in the outer regions,
specially at tip of tidal tails. These newly formed objects 
are recycling material from other galaxies and would make 
up a class of "second generation of dwarf galaxies". The 
study of the detailed distribution, composition and 
morphological details of the condensations of ejected 
material require high spacial resolution imagery, with the 
.


  Required minimum field of view (arcmin): 5 arcmin is OK.

  Required psf (FWHM, profile details): 0.1 arcsec (the 
smaller the better)

  Signal/noise required per resolution element: >30.

  Typical exposure time for this S/N & lunar phase: hours; dark.
 
  Anticipated photometric dynamic range required: As high as 
possible (1000).

  What additional photometric calibrations are required? Very 
good flat field calibration; background unperturbed by spurious 
sources.

  Anticipated number of separate pointings to complete program: 
At least 30 galaxies of interest.

  Can this program execute in a queue? yes, but tricky

  Anticipated post  focus instrumentation requirements (filters, 
gratings, etc.): Low noise, stable CCD

  Required instruments (spectral R, filters, wavelength range): 
Broad band filters (Johnson) and narrow band interference 
filters.

  How soon might you need to revisit this target with another 
instrument? Not important in this case.
  Why can't this program execute on the Blanco 4m? Due to PSF 
requirements.