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  • LUNAR AND PLANETARY EXPLORATION  (710)
  • ASTROPHYSICS  (546)
  • Physics  (517)
  • ASTRONOMY  (473)
  • 1980-1984  (2,246)
  • 1982  (2,246)
Collection
Keywords
Publisher
Years
  • 1980-1984  (2,246)
Year
  • 1
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    Voyages to Saturn (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The Voyager mission to Saturn is explained in detail. A history of Saturn observations from ancient times to the present is given. The Voyager spacecraft and their instruments are described. An overview of planetary astronomy is presented. The text is supplemented by numerous black and white and color photographs. The Saturn satellites are discussed in detail, and preliminary pictorial maps of the satellites are given.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-SP-451 , NAS 1.21:451 , LC-81-600073
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Observations of normal main-sequence and giant B stars (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: When interpreting the continuous and line spectra of B stars, it is helpful to think in terms of a model consisting of a photosphere and a mantle which is the outer part of the atmosphere where the effects of nonradiative heating are seen. A survey of the spectra of these stars shows that conditions in the photosphere determine most of what is seen, and in the case of most B stars, the presence of the mantle can be detected only by a special effort. The shape of the visible continuum spectrum and the shape and absolute value of the UV continuous spectrum as determined from low resolution spectra are discussed. Effective temperature for B stars in the main sequence, including corrections for interstellar extinction and bolometric corrections are explored. The major constituents of B-type spectra, variation of the strength of line along the main sequence band, the UV spectra, UV line blocking, intrinsic colors, and variations in light and spectra are also examined.
    Keywords: ASTRONOMY
    Type: B Stars With and Without Emission Lines, Parts 1 and 2; p 39-77
    Format: text
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  • 3
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    The evolution of massive stars (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The hypotheses underlying theoretical studies of the evolution of massive model stars with and without mass loss are summarized. The evolutionary tracks followed by the models across theoretical Hertzsprung-Russell (HR) diagrams are compared with the observed distribution of B stars in an HR diagram. The pulsational properties of models of massive star are also described.
    Keywords: ASTROPHYSICS
    Type: B Stars With and Without Emission Lines, Parts 1 and 2; p 199-229
    Format: text
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  • 4
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    Space telescope (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The Space Telescope is discussed. The spacecraft, science instruments, deployment, the Space Telescope Science Institute, and astronomy are discussed.
    Keywords: ASTRONOMY
    Type: NASA-EP-166 , NAS 1.19:166
    Format: application/pdf
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  • 5
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    Long Periodic Terms in the Solar System (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The long period variations of the first eight planets in the solar system are studied. First, the Lagrangian solution is calculated and then the long period terms with fourth order eccentricities and inclinations are introduced into the perturbation function. A second approximation was made taking into account the short period terms' contribution, namely the perturbations of first order with respect to the masses. Special attention was paid to the determination of the integration constants. The relative importance of the different contributions is shown. It is useless, for example, to introduce the long period terms of fifth order if no account has been taken of the short period terms. Meanwhile, the terms that have been neglected would not introduce large changes in the integration constants. Even so, the calculation should be repeated with higher order short period terms and fifth order long periods.
    Keywords: ASTROPHYSICS
    Type: NASA-TM-76994 , NAS 1.15:76994
    Format: application/pdf
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  • 6
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    Reports of Planetary Geology Program, 1982 (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Work conducted in the Planetary Geology program is summarized. The following categories are presented: outer solar system satellites; asteroids and comets; Venus; cratering processes and landform development; volcanic processes and landforms; aolian processes and landforms; fluvial processes and landform development; periglacial and permafrost processes; structure, tectonics and stratigraphy; remote sensing and regolith studies; geologic mapping, cartography and geodesy.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-85127 , EL-4 , NAS 1.15:85127
    Format: application/pdf
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  • 7
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    Advances in Planetary Geology (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Advances in Planetary Geology is a new series intended to serve the planetary geology community with a form for quick and thorough communications. There are no set lists of acceptable topics or formats, and submitted manuscripts will not undergo a formal review. All submissions should be in a camera ready form, preferably spaced, and submitted to the editor.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-84894 , EL-4 , NAS 1.15:84894
    Format: application/pdf
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  • 8
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    Astronomical facilities for Spacelab (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Three significant Spacelab facilities which are being developed, or planned by NASA will use the 1-2 week observational capability for attached payloads on Shuttle to carry out advanced astronomical observations in the ultraviolet visible, and infrared spectral regions during the decade of the 1980s. The three facilities are expected to evolve in capability over several Shuttle flights with a final objective of protracted observational capability from a permanent facility in space with periodic servicing and/or retrieval. The three facilities are the Office of Space Science package (OSS-3/7), the Solar Optical Telescope (SOT), and the Shuttle Infrared Telescope Facility (SIRTF). The scientific and technical objectives of these astronomical facilities include both their current and projected capabilities, their use of the manned Shuttle, and their eventual disposition to a long-term facility. International aspects of the missions, including General Investigator programs, are also being planned.
    Keywords: ASTRONOMY
    Type: IAF PAPER 82-25
    Format: text
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  • 9
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    Planetary exploration program through the year 2000 - A progress report (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: This paper covers the solar system exploration committee including their recommendations and plan options, and study approach. Also included are: planetary and solar system exploration program; thrusts, methodology, goals, recent history, approach to reduce costs/increase efficiency, spacecraft, recent problems, and plans for FY 1982. All of the different program ingredients are emphasized.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: AAS 81-337 , Leadership in space for benefits on earth; Oct 26, 1981 - Oct 29, 1981; San Diego, CA
    Format: text
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  • 10
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    Introducing the B stars (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Methods for classifying B stars in the visible region by examining low reslution spectra; broadband colors; intermidiate band colors and H beta; absolute magnitude as a function of H beta and H gamma strength and of luminosity class; and the BCD system and its relation to the MK system are examined. The use of OAO-2 spectrophotometry; objective prism and objective grating spectra; and observations from the TD1 satellite for classifying B stars in the ultraviolet region are also discussed. Infrared and radio observations of these stars are reviewed as well as information available concerning masses, radii and velocity of escape.
    Keywords: ASTRONOMY
    Type: B Stars With and Without Emission Lines, Part 1 and 2; p 13-38
    Format: text
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