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Published online by Cambridge University Press: 18 July 2011
This chapter reviews services offered by astronomy libraries for assisting astronomers in their research. Special attention is given to the two most important information tools in astronomy: the NASA Astrophysics Data System (ADS) and the arXiv e-print server. Some less known features will be presented to lead to more efficient use of these tools. The core astronomy journals are explained, along with the open access concept and how it interacts with existing journals. The chapter also provides an introduction to bibliometric studies and shows why publication and citation statistics are important for both researchers and observatories. Finally, examples of cooperation between librarians and astronomers are presented in the context of working groups and conferences.