• Composite spectra paper 2: HD 88021/2

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/009/04/0193-0203

    • Keywords

       

      composite spectra; visual binaries; stars, individual

    • Abstract

       

      HD 88021/2 (ADS 7662) is a very close visual binary. The accepted visual orbit, which is of very high eccentricity and graded “reliable”, led to the expectation of a periastron passage in 1981, when there should have been a large difference in radial velocity between the components. No such event took place, and there is little indication that it is likely to occur in the near future. A new interpretation of the visual orbital data leads to an orbit of a different character from those hitherto proposed. A decision between the competing orbits should be possible within a very few years. Meanwhile, the method of spectral subtraction developed in Paper 1 has enabled us to separate the spectra of the two components and to show that their spectral types are K0 III and A2m.

    • Author Affiliations

       

      R. Griffin1 2

      1. The Observatories, Madingley Road, Cambridge - CB3 0HA, England
      2. Mount Wilson & Las Campanas Observatories, Carnegie Institution of Washington, USA
    • Dates

       
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