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Einstein and IUE Observations of Nearby Red Dwarfs

  • Conference paper
Activity in Red-Dwarf Stars

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 102))

Abstract

This paper summarizes data for 40 representative nearby stars from one guest observer’s coordinated programs with the Einstein observatory or IUE observatory. The coronal X-ray, chromospheric ultraviolet, and auxiliary optical properties of sets of these stars are tabulated or illustrated in several ways. Factors of stellar duplicity are shown to be quite prevalent in presenting the observations. The most luminous X-ray dwarfs below the Sun are strongly prone to binary status. X-ray luminosity, and the ratio of chromospheric flux to X-ray flux, are dependent on photospheric radius. A very long period BY Draconis variable of type dM6e (HH And) is a detected X-ray source, and some presumably quite old (halo) stars are detected.

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Author information

Authors and Affiliations

  1. Lockheed Palo Alto Research Laboratory, USA

    Hugh M. Johnson

Authors
  1. Hugh M. Johnson
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Editor information

Editors and Affiliations

  1. Armagh Observatory, Northern Ireland

    Patrick B. Byrne

  2. Astrophysical Observatory, Italy

    Marcello Rodonò

  3. University of Catania, Italy

    Marcello Rodonò

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© 1983 Springer Science+Business Media Dordrecht

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Johnson, H.M. (1983). Einstein and IUE Observations of Nearby Red Dwarfs. In: Byrne, P.B., Rodonò, M. (eds) Activity in Red-Dwarf Stars. Astrophysics and Space Science Library, vol 102. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7157-8_13

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  • DOI: https://doi.org/10.1007/978-94-009-7157-8_13

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-7159-2

  • Online ISBN: 978-94-009-7157-8

  • eBook Packages: Springer Book Archive

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