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The dwarf galaxy population in two compact groups

Published online by Cambridge University Press:  06 October 2004

Patricia E. Campos ,
C. Mendes de Oliveira  and
M. Bolte
Patricia E. Campos
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Departamento de Astronomia, Universidade de São Paulo, Brazil email: [email protected] Present address: IAG-USP, Departamento de Astronomia, Rua do Matão 1226, Cidade Universitária 05508-900, São Paulo, SP, Brazil.
C. Mendes de Oliveira
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Departamento de Astronomia, Universidade de São Paulo, Brazil email: [email protected]
M. Bolte
Affiliation:
UCSC/Lick Observatory
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Abstract

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We have undertaken an imaging survey of low surface brightness dwarf galaxies in nearby groups with the main goal of studying the faint-end of the galaxy luminosity function at z $\sim 0$. Here we describe the results on the search for LSB dwarf galaxies in two compact groups: HCG44 and HCG68. Our study explores the surface brightness, sizes, magnitudes and colours of these candidate dwarf galaxies. The selection criteria were their central surface brightness, scale factors and diameters at the limiting isophote of 26 R mag$/"^{2}$. We estimate the faint end of the luminosity function of galaxies through Monte Carlo simulations. The observed magnitude distribution of the candidate dwarf galaxies in the groups (down to $M_{R} \sim - 13$) is compatible with a Schechter function with a slope $\alpha \sim -1.2$.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUC195 , March 2004 , pp. 441 - 443
Copyright
© 2004 International Astronomical Union