scholarly journals The Structure and Interaction History of Moderate Luminosity Mergers

2006 ◽  
Vol 2 (S235) ◽  
pp. 206-206
Author(s):  
Susanne Hüttemeister ◽  
Eva Manthey
Keyword(s):  
Galaxy Evolution ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Driving Forces ◽  
Disk Galaxies ◽  
Infrared Galaxies ◽  
Ultraluminous Infrared Galaxies ◽  
History Of ◽  
Interaction History ◽  
Co Observations

AbstractInteraction and merging are the two most important driving forces of galaxy evolution. In contrast to the well studied major mergers of two large gas-rich disk galaxies, which may lead to Ultraluminous Infrared Galaxies (ULIRGs, LFIR>1012 L⊙), mergers between galaxies of unequal mass or a spiral and an elliptical (S+E mergers) are still poorly understood. These moderate luminosity mergers typically have LFIR > 1011 L⊙. Here, we present the results of our multiwavelength study of a sample of such kind of mergers, including interferometric HI and single-dish CO observations, optical and near-infrared imaging as well as optical spectroscopy.

scholarly journals A Large Mid-Infrared Spectroscopic and Near-Infrared Imaging Survey of Ultraluminous Infrared Galaxies: Their Nature and Evolution

1999 ◽  
Vol 118 (6) ◽  
pp. 2625-2645 ◽  
Author(s):  
D. Rigopoulou ◽  
H. W. W. Spoon ◽  
R. Genzel ◽  
D. Lutz ◽  
A. F. M. Moorwood ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Infrared Galaxies ◽  
Near Infrared Imaging ◽  
Mid Infrared ◽  
Infrared Spectroscopic ◽  
Ultraluminous Infrared Galaxies

scholarly journals Stellar substructures in the periphery of the magellanic clouds with the VISTA hemisphere survey from the red clump and other tracers

2021 ◽  
Author(s):  
Dalal El Youssoufi ◽  
Maria-Rosa L Cioni ◽  
Cameron P M Bell ◽  
Richard de Grijs ◽  
Martin A T Groenewegen ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Magellanic Clouds ◽  
Imaging Data ◽  
The North ◽  
The Galaxy ◽  
History Of ◽  
Northern Side ◽  
Red Clump ◽  
Interaction History

Abstract We study the morphology of the stellar periphery of the Magellanic Clouds in search of substructure using near–infrared imaging data from the VISTA Hemisphere Survey (VHS). Based on the selection of different stellar populations using the (J − Ks, Ks) colour–magnitude diagram, we confirm the presence of substructures related to the interaction history of the Clouds and find new substructures on the eastern side of the LMC disc which may be owing to the influence of the Milky Way, and on the northern side of the SMC, which is probably associated to the ellipsoidal structure of the galaxy. We also study the luminosity function of red clump stars in the SMC and confirm the presence of a bi–modal distance distribution, in the form of a foreground population. We find that this bi–modality is still detectable in the eastern regions of the galaxy out to a 10○ distance from its centre. Additionally, a background structure is detected in the North between 7○ and 10○ from the centre which might belong to the Counter Bridge, and a foreground structure is detected in the South between 6○ and 8○ from the centre which might be linked to the Old Bridge.

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