V. Charmandaris et al 2004 ApJ 600 L15 doi:10.1086/381687
V. Charmandaris1,3, E. Le Floc'h2,4 and I. F. Mirabel2,5
Show affiliationsWe present evidence for the dramatically different morphology between the rest-frame UV and 7 μm mid-IR emission of VV 114 and Arp 299, two nearby (z ~ 0) violently interacting luminous infrared galaxies (LIRGs). Nearly all LIRGs are interacting systems, and it is currently accepted that they dominate the IR emission at z > 1. LIRGs located at z = 1-2 could easily be detected as unresolved sources in deep optical/near-IR ground-based surveys as well as in upcoming 24 μm surveys with the Space Infrared Telescope Facility. We demonstrate that the spatial resolution of these surveys will result in blending of the emission from unresolved interacting components. An increased scatter will thus be introduced in the observed optical-to-mid-IR colors of these galaxies, leading to a systematic underestimation of their dust content.
galaxies: high-redshift; galaxies: individual (Arp 299, VV 114); galaxies: starburst; infrared: galaxies; ultraviolet: galaxies
Issue 1 (2004 January 1)
Received 2003 April 14, accepted for publication 2003 November 20
Published 2003 December 17
V. Charmandaris et al 2004 ApJ 600 L15
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