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Intra-group Light in Hickson Compact Groups

Published online by Cambridge University Press:  19 May 2006

G.A. Mamon ,
F. Combes ,
C. Deffayet ,
B. Fort ,
C. Da Rocha ,
C. Mendes de Oliveira  and
B.L. Ziegler
C. Da Rocha
Affiliation:
Institut für Astrophysik Göttingen, Georg August Universität Göttingen, Germany Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, DAS/INPE, Brazil
C. Mendes de Oliveira
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, USP, Brazil
B.L. Ziegler
Affiliation:
Institut für Astrophysik Göttingen, Georg August Universität Göttingen, Germany
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Abstract

We have analyzed the intra-group light component of 3 Hickson Compact Groups (HCG 79, HCG 88 and HCG 95) with detections in two of them: HCG 79, with 46±11% of the total B band luminosity and HCG 95 with 11±26%. HCG 88 had no component detected. This component is presumably due to tidally stripped stellar material trapped in the group potential and represents an efficient tool to determine the stage of dynamical evolution and to map its gravitational potential. To detect this low surface brightness structure we have applied the wavelet technique OV_WAV, which separates the different components of the image according to their spatial characteristic sizes.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 20: Mass Profiles and Shapes of Cosmological Structures , 2006 , pp. 273 - 274
Copyright
© EAS, EDP Sciences, 2006

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