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3 datasets found for "U.S. towns founded between 1801 and 1805 with population data 2017"
  • Federal

    Collinder 261 Chandra X-Ray Point Source Catalog

    National Aeronautics and Space Administration —

    This table contains some of the results from the first X-ray study of Collinder 261 (Cr 261), which at an age of 7 Gyr is one of the oldest open clusters known in the...
  • Federal

    Planck High-Redshift Source Candidates Catalog

    National Aeronautics and Space Administration —

    The Planck mission, thanks to its large frequency range and all-sky coverage, has a unique potential for systematically detecting the brightest, and rarest, sub-...
  • Federal

    M 51 Deep Chandra ACIS X-Ray Point Source Catalog

    National Aeronautics and Space Administration —

    The authors obtained a deep X-ray image of the nearby galaxy M 51 using the Chandra X-Ray Observatory. Here the catalog of X-ray sources detected in these...
3 datasets found for "U.S. towns founded between 1801 and 1805 with population data 2017"

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