Intra-group Light in Hickson Compact Groups

C. Da Rocha; C. Mendes de Oliveira; B.L. Ziegler

doi:10.1051/eas:2006086

All issues

Volume 20 (2006)

EAS Publications Series, 20 (2006) 273-274

Abstract

Issue		EAS Publications Series Volume 20, 2006 Mass Profiles and Shapes of Cosmological Structures


Page(s)		273 - 274
DOI		https://doi.org/10.1051/eas:2006086
Published online		19 May 2006

Mass Profiles and Shapes of Cosmological Structures
G.A. Mamon, F. Combes, C. Deffayet and B. Fort (eds)
EAS Publications Series, 20 (2006) 273-274

Intra-group Light in Hickson Compact Groups

C. Da Rocha¹^,2, C. Mendes de Oliveira³ and B.L. Ziegler¹

¹ Institut für Astrophysik Göttingen, Georg August Universität Göttingen, Germany
² Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, DAS/INPE, Brazil
³ Instituto de Astronomia, Geofísica e Ciências Atmosféricas, USP, Brazil

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.