Author: Lisenfeld U. Braine J. Duc P. A. Boquien M. Brinks E. Bournaud F. Lelli F. Charmandaris V.
Publisher: Edp Sciences
E-ISSN: 1432-0746|590|issue|A92-A92
ISSN: 0004-6361
Source: Astronomy & Astrophysics, Vol.590, Iss.issue, 2016-05, pp. : A92-A92
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Abstract
The physical mechanisms driving star formation (SF) in galaxies are still not fully understood. Tidal dwarf galaxies (TDGs), made of gas ejected during galaxy interactions, seem to be devoid of dark matter and have a near-solar metallicity. The latter makes it possible to study molecular gas and its link to SF using standard tracers (CO, dust) in a peculiar environment. We present a detailed study of a nearby TDG in the Virgo Cluster, VCC 2062, using new high-resolution CO(1–0) data from the Plateau de Bure, deep optical imaging from the Next Generation Virgo Cluster Survey (NGVS), and complementary multiwavelength data. Until now, there was some doubt whether VCC 2062 was a true TDG, but the new deep optical images from the NGVS reveal a stellar bridge between VCC 2062 and its parent galaxy, NGC 4694, which is clear proof of its tidal origin. Several high-resolution tracers (H
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