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Multiresolution Analysis of Tidal Debris Structures in Groups of Galaxies

Published online by Cambridge University Press:  01 August 2006

D. N. Epitácio Pereira ,
A. B. De Mello  and
C. R. Rabaça
D. N. Epitácio Pereira
Affiliation:
Departamento de Astronomia, Observatório Nacional, R. Gal. José Cristino 77, 20921-400, Rio de Janeiro/RJ, Brazil
A. B. De Mello
Affiliation:
Departamento de Astronomia, Observatório Nacional, R. Gal. José Cristino 77, 20921-400, Rio de Janeiro/RJ, Brazil
C. R. Rabaça
Affiliation:
Observatório do Valongo, Universidade Federal do Rio de Janeiro, Ladeira do Pedro Antônio 43, 20080-090 Rio de Janeiroa/RJ, Brazil
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Abstract

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Galaxies in groups and clusters often experience strong tidal forces from its neighbors, expelling a significant amount of matter (stars and gas) to the surrounding environment, giving rise to ‘tidal debris’ features. We present the first experiments in a program of identification of substructures of extragalactic tidal debris elements in images from the HST archive, using wavelet-based multiresolution analysis. Tidal structures in two compact groups of galaxies, HCG 79 (Seyfert's Sextet) and HCG 92 (Stephan's Quintet) have been analyzed so far.

Keywords

techniques: image processinggalaxies: clusters: individual (HCG 79, HCG 92)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 233
Copyright
Copyright © International Astronomical Union 2007

References

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