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Showing 81-100 of 10,000 results
  1. One Year of NACO Operations

    The first ESO adaptive optics system instrument, NACO, installed at the VLT has been offered to the astronomical community and used on a regular...
    N. Ageorges, L.E. Tacconi-Garman, C. Lidman in Science with Adaptive Optics
    Conference paper
  2. The Construction of X-ray Cluster Surveys and Their Spatial Analysis

    The construction of X-ray cluster surveys is described. As an example the selection processes applied to the REFLEX survey and first results of an...
    Hans Böhringer, Peter Schuecker in Mining the Sky
    Conference paper
  3. The 2dF QSO Redshift Survey - 10K@2K!

    With $\approx$ 10000 QSO redshifts, the 2dF QSO Redshift Survey...
    T. Shanks, B. J. Boyle, ... R. J. Smith in Mining the Sky
    Conference paper
  4. Clustering of X-Ray Selected AGN

    The analysis of the spatial clustering of the brightest X-ray selected AGN from the ROSAT All Sky Survey is presented. A weak correlation signal at a...
    Jörg Retzlaff in Mining the Sky
    Conference paper
  5. Strong Constraints on Cosmology from Galaxy Clusters

    In this work we show how galaxy clusters can be used to discriminate among different cosmological models. We have used available X-ray & optical...
    J. M. Diego, E. Martínez-González, ... J. Silk in Mining the Sky
    Conference paper
  6. Large-Scale Distribution and Spectral Properties of Galaxies in the Shapley Concentration

    We present the results of a redshift survey of both cluster and intercluster galaxies in the central part of the Shapley Concentration, the richest...
    Elena Zucca, Sandro Bardelli in Mining the Sky
    Conference paper
  7. FORCE: FORtran for Cosmic Errors

    We review the theory of cosmic errors we have recently developed for count-in-cells statistics. The corresponding FORCE package provides a simple and...
    Stéphane Colombi, István Szapudi in Mining the Sky
    Conference paper
  8. Relating Galaxy Cluster X-Ray Luminosities to Gravitational Masses in Wide-Angle Surveys

    The cosmologically most important cluster parameter is its gravitational mass. In order to constrain cosmological models of structure formation by...
    Thomas H. Reiprich, Hans Böhringer in Mining the Sky
    Conference paper
  9. Automated Classification Techniques for Large Spectroscopic Surveys

    With the onset of large, systematically selected spectroscopic surveys we have the opportunity to understand the distribution and evolution of...
    A. J. Connolly, F. Castander, ... C. W. Yip in Mining the Sky
    Conference paper
  10. Fast Algorithms and Efficient Statistics: N-Point Correlation Functions

    We present here a new algorithm for the fast computation of N-Point correlation functions in large astronomical data sets. The algorithm is based on...
    Andrew W. Moore, Andy J. Connolly, ... Larry Wasserman in Mining the Sky
    Conference paper
  11. Automatic Technique for Spectral Analysis

    The paper puts forward two automatic methods to deal with astronomical spectra. An automatic classification method of stellar spectra using the Self...
    Yongheng Zhao, Jianqiao Xue, ... Qibin Li in Mining the Sky
    Conference paper
  12. Noise Estimation in CMB Time-Streams and Fast Iterative Map-Making

    We describe here an iterative method for jointly estimating the noise power spectrum from a CMB experiment’s time-ordered data, together with the...
    S. Prunet, P. A. R. Ade, ... N. Vittorio in Mining the Sky
    Conference paper
  13. Source Identification Through Decision Trees

    This paper presents the use of decision tree based techniques for optical / ultraviolet source identification. Such techniques allow to improve...
    Bruno Voisin, José Donas in Mining the Sky
    Conference paper
  14. Mining the Thermal SZ Effect with a Speedy Pixon Algorithm

    A Speedy Pixon Algorithm for image reconstruction is applied. Galaxy clusters are extracted from multi-wavelength microwave sky maps using the...
    Luís Teodoro, Vincent R. Eke in Mining the Sky
    Conference paper
  15. Extracting Knowledge from Very Large Datasets in a Multi-Wavelength Context

    The ability to extract knowledge from very large data catalogues resulting from sky surveys or from deep wide fields, observed at various wavelength...
    Daniel Egret in Mining the Sky
    Conference paper
  16. Splitting the Sky - HTM and HEALPix

    Mission data sets are increasing in size and complexity. To enable efficient processing and storage of such data sets a tessellation scheme may be...
    W. O’Mullane, A. J. Banday, ... A. S. Szalay in Mining the Sky
    Conference paper
  17. Case Study of Handling Scientific Queries on Very Large Datasets: The SDSS Science Archive

    The SDSS Science Archive (SX) was designed to enable scientific data mining and interactive data exploration on the terabyte scale. It consists of a...
    Aniruddha R. Thakar, Peter Z. Kunszt, Alexander S. Szalay in Mining the Sky
    Conference paper
  18. The Deepest Field

    The Cosmic Microwave Background (CMB) anisotropy experiments are starting to map the last scattering surface at...
    P. de Bernardis, P. A. R. Ade, ... N. Vittorio in Deep Fields
    Conference paper
  19. On the Evolution of Nearby Star-Forming Systems and Their Connection to Primeval Galaxies

    We present the state of the art of a project to infer the spectro-photometric and chemical evolution history of some benchmark nearby star-forming...
    Alessandra Aloisi in Deep Fields
    Conference paper
  20. Constraining Models of Galaxy Formation with Deep Multicolor Galaxy Surveys

    We present a comparison between the observed properties of high redshift galaxies, as they result from the analysis of deep multicolor imaging...
    Adriano Fontana, Nicola Menci, ... Paolo Saracco in Deep Fields
    Conference paper
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