Tidal Dwarf Galaxies in the Interacting System NGC 2992/2993

E. Brinks, P.A. Duc, V. Springel, B. Pichardo, P. Weilbacher, F. Mirabel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

We present multi-wavelength results and numerical simulations of the interacting system NGC 2992/2992 (Arp 245). This pair is composed of two colliding spiral galaxies out of which emanate long stellar tails and a bridge. H II regions are observed at the end of one of the stellar tails at the location of an object classified as a tidal dwarf galaxy. Our spectacular VLA HI map reveals a huge intergalactic ring associated with NGC 2993 and a long tidal tail escaping from NGC 2992 coinciding with the optical one, with at its tip a massive clump that hosts most of the atomic gas in the system. The latter is associated with the star-forming tidal dwarf. Unlike the tail, most of the HI ring has no stellar counterpart.
Original languageEnglish
Title of host publicationIn: Mapping the Hidden Universe: The Universe behind the Milky Way - The Universe in HI, ASP Conf Series 218
PublisherAstronomical Society of the Pacific
Pages341-348
ISBN (Print)1-58381-050-1
Publication statusPublished - 2000

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