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Showing 81-100 of 10,000 results

  1. A Search for Close Companions in Sco OB2

    Using adaptive optics we study the binary population in the nearby OB association Scorpius OB2. We present the first results of our near-infrared...
    Thijs Kouwenhoven, Anthony Brown, ... Alessia Gualandris in Science with Adaptive Optics
    Conference paper

  2. Lyot Coronagraphy at the Palomar and Phase-Mask Coronagraphy at the VLT

    In this paper, we report on observations of faint companions and circumstellar disks at the Palomar 200-inch telescope. As a result, we present...
    Anthony Boccaletti, Jean-Charles Augereau, ... Pierre Baudoz in Science with Adaptive Optics
    Conference paper

  3. NACO Observations of NGC 1068

    We present various recent results obtained with adaptive optics systems on the very central region of NGC 1068: Grif long-slit spectroscopy in K band...
    Damien Gratadour, Daniel Rouan, ... François Lacombe in Science with Adaptive Optics
    Conference paper

  4. AO-Assisted Observations of Ultra-Compact H II Regions

    High-spatial resolution observations in the near-infrared (NIR) with Adaptive Optics (AO) represent a powerful tool to investigate massive star...
    Elena Puga, Markus Feldt, ... Bringfried Stecklum in Science with Adaptive Optics
    Conference paper

  5. Near-Infrared High Resolution Spectroscopy of High-z QSO Absorption Systems with the Subaru Adaptive Optics System

    We are conducting a near-infrared (1.0–1.35 μm) high resolution spectroscopic survey of high-z QSOs to study the QSO absorption systems at high...
    Naoto Kobayashi, Takuji Tsujimoto, Yosuke Minowa in Science with Adaptive Optics
    Conference paper

  6. Mining the Local Universe: the QSO Space Density

    We present progress results of a new survey for bright QSOs (V < 14.5, R < 15.4, B J...
    Stefano Cristiani, Andrea Grazian, ... Christopher Corbally in Mining the Sky
    Conference paper

  7. Field Galaxy Evolution from the Munich Near-Infrared Cluster Survey (MUNICS)

    The Munich Near-IR Cluster Survey (MUNICS) is a K’-selected survey covering 1 square degree in the K’ and J near-infrared bands with complementary...
    Georg Feulner, Niv Drory, ... Claudia Mendes de Oliveira in Mining the Sky
    Conference paper

  8. Nonlinear Peculiar-Velocity Analysis and PCA

    We allow for nonlinear effects in the likelihood analysis of peculiar velocities, and obtain...
    Avishai Dekel, Amiram Eldar, ... Idit Zehavi in Mining the Sky
    Conference paper

  9. 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

  10. 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

  11. 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

  12. Near-Infrared Integral Field Spectroscopy of Damped Lyman- $\alpha$ Systems

    We assess the feasibility of detecting star formation in damped Lyman- $\alpha$...
    Andrew Bunker, Annette Ferguson, ... Rachel Somerville in Mining the Sky
    Conference paper

  13. 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

  14. 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

  15. Massive Variability Searches: the Past, Present and Future

    Many decades ago a search for variable stars was one of the main areas of astrophysical research. Such searches, conducted with CCD detectors rather...
    Bohdan Paczyński in Mining the Sky
    Conference paper

  16. NIR Visibility Function of Emission Lines with the Galileo OH Subtracted Spectrograph

    We study here the visibility function of emission lines expected for GOHSS. This spectrograph will accomplish, on spectra observed at resolution...
    Agostino Fiorani, Roberto Scaramella, ... Fabrizio Vitali in Mining the Sky
    Conference paper

  17. Fast Hough Transform for Robust Detection of Satellite Tracks

    Satellite tracks are frequently observed on images obtained with wide-field imagers and relative long exposure times. In order to prevent false...
    Benoît Vandame in Mining the Sky
    Conference paper

  18. 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

  19. Blind Source Separation of Multispectral Astronomical Images

    Multispectral images lead to classify pixels, but often with the drawback that each pixel value is the result of a combination of different sources....
    Albert Bijaoui, Danielle Nuzillard in Mining the Sky
    Conference paper

  20. 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
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