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  • ASTRONOMY  (3)
  • Aquaculture
  • Astronomy
  • Electronic structure and strongly correlated systems
  • Humans
  • 1990-1994  (3)
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Year
  • 1
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    Unknown
    Hubble Space Telescope: The GO and GTO Observing Programs. Version 1.0 (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Selected information from the current Hubble Space Telescope (HST) science programs for the Guaranteed Time Observers (GTO's) and General Observers (GO's) is presented. Included are program abstracts, detailed listings of specific targets, and exposure information.
    Keywords: ASTRONOMY
    Type: NASA-CR-189815 , NAS 1.26:189815
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    DOPHOT, a CCD photometry program: Description and tests (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The design considerations and operational features of DOPHOT, a point-spread function (PSF) fitting photometry program, are described. Some relevant details of the PSF fitting are discussed. The quality of the photometry returned by DOPHOT is assessed via reductions of an 'artificial' globular cluster generated from a list of stars with known magnitudes and colors. Results from comparative tests between DOPHOT and DAOPHOT using this synthetic cluster and real data are also described.
    Keywords: ASTRONOMY
    Type: Astronomical Society of the Pacific, Publications (ISSN 0004-6280); 105; 693; p. 1342-1353
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Variable stars in the Pegasus dwarf galaxy (DDO 216) (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Observations obtained over a period of five years of the resolved stars in the Pegasus dwarf irregular galaxy (DDO 216) have been searched for variable stars. Thirty-one variables were found, and periods established for 12. Two of these variable stars are clearly eclipsing variables, seven are very likely Cepheid variables, and the remaining three are probable Cepheids. The period-luminosity relation for the Cepheids indicates a distance modulus for Pegasus of m - M = 26.22 + or - 0.20. This places Pegasus very near the zero-velocity surface of the Local Group.
    Keywords: ASTRONOMY
    Type: Astronomical Journal (ISSN 0004-6256); 100; 1151-115
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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