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  • ASTROPHYSICS  (2)
  • ENVIRONMENT POLLUTION  (1)
  • Life and Medical Sciences
  • 1980-1984  (3)
  • 1950-1954
  • 1940-1944
  • 1981  (3)
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  • 1980-1984  (3)
  • 1950-1954
  • 1940-1944
Year
  • 1
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    Infrared line and continuum views of G333.6-0.2 (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A 1-micron CCD picture and maps of the Ne II and Ar III fine-structure lines have been obtained in a region roughly one arcmin in size centered on the core of the compact H II region G333.6 - 0.2. The two emission-line maps show nearly identical intensity distributions, although much different fluxes. The maps are similar to the 1-micron picture smoothed to their angular resolutions. The infrared line of S IV also was detected and appears to have a spatial intensity distribution similar to that of the other fine-structure lines. The 1-micron picture reveals a small number of objects of nearly stellar appearance in the core, suggesting that G333.6 - 0.2 is powered by a compact cluster of sources. Stellar continuum radiation probably is responsible in part for the low equivalent width of the B-gamma line in the core.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 247
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    In situ correlative measurements for the ultraviolet differential absorption lidar and the high spectral resolution lidar air quality remote sensors: 1980 PEPE/NEROS program (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: In situ correlative measurements were obtained with a NASA aircraft in support of two NASA airborne remote sensors participating in the Environmental Protection Agency's 1980persistent elevated pollution episode (PEPE) and Northeast regional oxidant study (NEROS) field program in order to provide data for evaluating the capability of two remote sensors for measuring mixing layer height, and ozone and aerosol concentrations in the troposphere during the 1980 PEPE/NEROS program. The in situ aircraft was instrumented to measure temperature, dewpoint temperature, ozone concentrations, and light scattering coefficient. In situ measurements for ten correlative missions are given and discussed. Each data set is presented in graphical and tabular format aircraft flight plans are included.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-TM-83107
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    The abundances of neon, sulfur, and argon in planetary nebulae (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: New infrared observations of Ne II, Ar III, and S IV are used in optical observations of other ionization states of the considered elements to evaluate the abundances of neon, argon, and sulfur in 18 planetary nebulae. Attention is also given to one or more of the infrared lines in 18 other nebulae. It is pointed out that S IV was detected in approximately 90% of the observed objects, while Ar III was found in about 80%, and Ne II in roughly one-third. It is noted that optical observations typically include only a limited region of the nebula, while the infrared measurements frequently involve integration over the entire nebular image.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 249
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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