next previous
Up: Abstract

A&A Supplement series, Vol. 129, May I 1998, 455-462

Received May 30; accepted October 7, 1997

A catalogue of dwarf galaxy candidates around interacting galaxiesgif

H.J. Deegtex2html_wrap1032, C. Muñoz-Tuñóntex2html_wrap1032, G. Tenorio-Tagletex2html_wrap1036, E. Tellestex2html_wrap1038, J.M. Vilcheztex2html_wrap1032, J.M. Rodriguez-Espinosatex2html_wrap1032, P.A. Ductex2html_wrap1044, and I.F. Mirabeltex2html_wrap1046

Send offprint request: C. Muñoz-Tuñón

tex2html_wrap1048  Instituto de Astrofısica de Canarias, E-38200 La Laguna, Tenerife, Spain
tex2html_wrap1050  Institute of Astronomy, Madingley Road, Cambridge, UK
tex2html_wrap1052  Royal Greenwich Observatory, Madingley Road, Cambridge, UK
tex2html_wrap1054  Observatorio Nacional, Rio de Janeiro, Brasil
tex2html_wrap1056  European Southern Observatory, Garching, Germany
tex2html_wrap1058  Service d'Astrophysique, Centre d'Études de Saclay, F-91191 Gif-sur-Yvette, France


We present results from the imaging of a sample of 12 interacting galaxies for which we have cataloged all potential dwarf systems in the vicinity of these strongly interacting galaxies. After careful cleaning of the images and applying a restrictive S/N criterion we have identified, measured and cataloged all possible extended objects in each field. On the frames, covering 11.4 tex2html_wrap_inline1014 10.5 arcmins, typically 100-200 non-stellar faint, extended objects were found. The vast majority tex2html_wrap_inline1016 of these objects had not been previously identified. The number of expected objects in the magnitude range R= 18 - 19.5 exceeds the expected count of background galaxies. This supports the possibility that a density enhancement of extended objects around some interacting galaxies results from the addition of a locally formed dwarf galaxy population.

keywords: galaxies: interactions -- galaxies: statistics -- galaxies: formation

Copyright by the European Southern Observatory (ESO)