Tidal Dwarf Galaxies (TDG), concentrations of interstellar gas and stars in the tidal features of interacting galaxies, have been the subject of much scrutiny. The `smoking gun' that will prove the TDG hypothesis is the discovery of independent dwarf galaxies that are detached from other galaxies, but have clear tidal histories. As part of a search for TDGs we are using GALEX to conduct a large UV imaging survey of interacting galaxies selected from the Arp Atlas. As part of that study, we present a GALEX UV and SDSS and SARA optical study of the gas-rich interacting galaxy pair Arp 305. The GALEX UV data reveal much extended diffuse UV emission and star formation outside the disks including a candidate TDG between the two galaxies. We have used a smooth particle hydrodynamics code to model the interaction and determine the fate of the candidate TDG.
@article{arxiv.0908.1424,
title = {Dwarf Detachment and Globular Cluster Formation in Arp 305},
author = {M. Hancock and B. J. Smith and C. Struck and M. L. Giroux and S. Hurlock},
journal= {arXiv preprint arXiv:0908.1424},
year = {2009}
}
Comments
6 pages, 2 figures, to be published in the Proceedings of the `Galaxy Wars: Stellar Populations and Star Formation in Interacting Galaxies Conference'