Tidal Dwarf Galaxies Bonn 2009: Ghosts from structure formation

Physics Centre Bad Honnef (Germany), May 25-29, 2009

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Poster

Title: VLT observations of NGC 1097 tidal tails

Poster file: poster_Galianni.pdf

Abstract:

We investigate the nature of large stellar condensations along the faint optical ‘jet-like’ tidal tails of NGC 1097. These two closely resemble dwarf spheroidal galaxies (dSphs). There is evidence (Higdon & Wallin 2003) that this ‘jet-like’ tidal feature originated from a minor merging event, and is composed by G-type stars. Here we try to ascertain if these dSphs formed from in situ star accretion along the tidal tails, or represents the remnant of the minor merger galaxy.

photos by Julia T. Scho (ForeignLight.com) / Marcel S. Pawlowski