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  • 1
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    The solar neighborhood, 1: Standard spectral types (K5-M8) for northern dwarfs within eight parsecs (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Description: Spectral types on a standard system are presented for late-type dwarfs within 8 pc. All known main-sequence stars north of -25 deg and with M(sub V) greater than or = 8.00 have been observed, resulting in 92 spectra. Based upon the stellar system density to 5 pc, we estimate that approximately 35 systems in the 8 pc sample are 'missing.' In an effort to reveal these systems, we use an empirical spectral type-M(sub V) relation to estimate distances to additional stars that may lie within 8 pc.
    Keywords: ASTRONOMY
    Type: The Astronomical Journal (ISSN 0004-6256); 108; 4; p. 1437-1444
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    SOI/MDI studies of active region seismology and evolution (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The solar oscillations investigation (SOI) will study solar active regions using both helioseismic and conventional observation techniques. The Michelson Doppler imager (MDI) can perform Doppler continuum and line depth imagery and can produce longitudinal magnetograms, showing either the full disk or a high resolution field of view. A dynamics program of continuous full disk Doppler observations for two months per year, campaign programs of eight hours of continuous observation per day, and a synoptic magnetic program of about 15 full disk magnetograms per day, are planned. The scientific plans, measurements and observation programs, are described.
    Keywords: ASTRONOMY
    Type: ESA, Proceedings of 4th SOHO on Helioseismology. Volume 2: Posters; p 99-102
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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