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This page is the entry point to the VOGCLUSTERS Web Application (alpha release) specialized for data and text mining on globular clusters. It is a toolset of DAME Program to manage and explore GC data in various formats.
In this page the users can obtain news, documentation and technical support about the web application.
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Along with the progress of the instruments for astronomical investigation of our Galaxy, the amount of data available for each globular clusters in the Milky Way is also growing at a steady rate. Several project from earth and from space are working to improve our detailed knowledge of such object, which are of utterly importance for our understanding of the status and evolution of our Galaxy. Since some of the older object in the Universe are contained in globular clusters, they have a key role also in many cosmological topics.
The importance of globular clusters for a broad range of astronomical studies has already addressed by W.E. Harris (1996). In that seminal paper (that works as companion of the well known online parameter compilations for galactic globular clusters) he also stressed the importance of having “readily available up-to-date list of parameters for this unique objects”. After almost fifteen years, these words appear even more true: the amount of available data on globular clusters has increased at a steady rate, following closely the enhanced capability of the technical instrumentations. Not only we have new and more reliable parameters for a great part of the known clusters, but - thanks to modern surveys conducted in bands different from the visible, such 2MASS ((Skrutskie et al. 2006) - several other objects keep going to increase our list of Milky Way clusters (e.g., (Froebrich et al. 2007), (Bonatto et al. 2007)).
The goal of the project VOGCLUSTERS is the design and development of a web application specialized in the data and text mining activities for astronomical archives related to globular clusters. Main services are employed for the simple and quick navigation in the archives (uniformed under VO standards and constraints) and their manipulation to correlate and integrate internal scientific information.
The user has the possibility to visualize and navigate the GC archives (galactic and extra-galactic objects), locally registered (by merging worldwide distributed VO databases and registries). A GC is made of observational parameters, sometimes including an history of the research evolution on its values. So far the user has the possibility to integrate/update these parameters with own values and reports (new values, comments, images, diagrams, references etc.).
Regarding the users, the web application foresees three different categories of users, respectively, the administrators, qualified (or equivalently registered) and generic users (see diagram above). The main differences between these user categories are related to the information manipulation rights. In particular the web application can be passively navigated by all users (generic category), can be integrated/updated by registered users (already authenticated within DAME Suite) in terms of own data management and can be re-engineered by administrators (typically DAME working group members). In principle all generic users can become qualified by submitting a registration form to administrators, by obtaining account information (login and password).