Abstract: This paper discusses the Social Network Analysis (SNA) as a method to be broadly applied in Information Science (IS) research. Information science is normally considered as an interdisciplinary field. In this regard, research lines that comprise the research work in post-graduate programs in Brazil are influenced by different fields of knowledge.
The co-authorship analysis of professors networks in the post-graduate program in information science at the University of Minas Gerais (PPGCI/UFMG) carried out by using SNA had a twofold output. The first one was to present the method itself. The second, to obtain empirical results that can be used to implement the discussion about the discipline. Collaborative networks between professors from different research lines is related to the integration of interdisciplinary characteristics found in the disciplines themselves. The article briefly presents the interdisciplinary nature of IS and gives an overview of the theoretical basis of SNA. Moreover, it presents studies about subject-matters related to IS, particularly the co-authorship network analysis. Finally, the methodological approach of this research and the main results are presented. In conclusion, the authors stress the benefits brought about by the use of SNA as a methodological tool. It can actually be fruitfully explored to support researches in both co-authorship networks and debates about Information Science and its interdisciplinary nature.