![]() The satellite’s complex instrumentation, mode of operation, astrophysical main objectives, and its expected scientific performance have been extensively reviewed elsewhere, see for example de Bruijne (2012). It will provide the first highly accurate 6D map of the Milky Way, measuring positions, parallaxes, and motions to the microarcsec level. The ESA Gaia mission, which is now in phase D (qualification and production), is expected to be launched by September 2013. Key words: Galaxy: general / methods: data analysis / methods: statistical / methods: miscellaneous Gaia project map generator archive#Therefore, the proposed method is shown to be very promising for data exploration and knowledge discovery in very large astronomical databases, such as the archive from the upcoming Gaia mission. In addition, the method allows for the potential discovery of hundreds of new objects, such as white dwarfs and quasars. Additionally, the application of our algorithm to SDSS objects of unknown nature has allowed us to identify classes of objects with similar astrophysical natures. First, our method can help distinguish between astrophysical objects and instrumental artifacts. We demonstrate the usefulness of the method by analyzing the spectra that were rejected by the SDSS spectroscopic classification pipeline and thus classified as “UNKNOWN”. Self-organizing maps networks are used to organize the information in clusters of objects, as homogeneously as possible according to their spectral energy distributions, and to project them onto a 2D grid where the data structure can be visualized. Our algorithm has been tested by means of simulated Gaia spectrophotometry, which is based on SDSS observations and theoretical spectral libraries covering a wide sample of astronomical objects. Gaia project map generator software#The method is being used in the framework of the Gaia satellite Data Processing and Analysis Consortium (DPAC) activities to prepare automated software tools that will be used to derive basic astrophysical information that is to be included in final Gaia archive. A new method applied to the segmentation and further analysis of the outliers resulting from the classification of astronomical objects in large databases is discussed. Astronomia i Meteorologia ICCUB-IEEC, Martí Franquèsġ, Astronomico di Padova (INAF), Vicolo OsservatorioĪims. S/n, Planck Institute For Astronomy (MPIA), Física Aplicada, Campus Lagoas-Marcosende Astronomical objects: linking to databasesĭ.Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes ![]()
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