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  • Astrophysics  (2)
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  • 1
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    Model Atmospheres for Novae in Outburst: Summary of Research (1999)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This paper presents a final report and summary of research on Model Atmospheres for Novae in Outburst. Some of the topics include: 1) Detailed NLTE (non-local thermodynamic equilibrium) Model Atmospheres for Novae during Outburst: II. Modeling optical and ultraviolet observations of Nova LMC 1988 #1; 2) A Non-LTE Line-Blanketed Stellar Atmosphere Model of the Early B Giant epsilon CMa; 3) Spectroscopy of Low Metallicity Stellar atmospheres; 4) Infrared Colors at the Stellar/Substellar Boundary; 5) On the abundance of Lithium in T CrB; 6) Numerical Solution of the Expanding Stellar Atmosphere Problem; and 7) The NextGen Model Atmosphere grid for 3000 less than or equal to T (sub eff) less than or equal to 10000K.
    Keywords: Astrophysics
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Metal Hydride and Alkali Halide Opacities in Extrasolar Giant Planets and Cool Stellar Atmospheres (2006)
    In:  CASI
    Details
    Publication Date: 2019-07-11
    Description: The lack of accurate and complete molecular line and continuum opacity data has been a serious limitation to developing atmospheric models of cool stars and Extrasolar Giant Planets (EGPs). We report our recent calculations of molecular opacities resulting from the presence of metal hydrides and alkali halides. The resulting data have been included in the PHOENIX stellar atmosphere code (Hauschildt & Baron 1999). The new models, calculated using spherical geometry for all gravities considered, also incorporate our latest database of nearly 670 million molecular lines, and updated equations of state.
    Keywords: Astrophysics
    Type: Also sponsored by grant NSF AST-00-86246|Proceedings of the NASA Laboratory Astrophysics Workshop; 274-277; NASA/CP-2006-214549
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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