Letter | Published:

Radio emission from R Aquarii

Nature 247, 532–534 (1974) | Download Citation

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Abstract

R AQUARII has been known as a variable star since its discovery by Harding in 1811. Although R Aquarii is usually referred to as a long-period variable it has been described as a symbiotic nova by Merrill (ref. 1, page 84) and Payne-Gaposhkin2. Photographic evidence discussed below indicates that a nova outburst occurred approximately 600 yr ago. Prompted by the nova-like radio outbursts from Cygnus X-3 we started a search for radio emission from some of the eruptive variable stars. Here we report the detection of variable radio emission from R Aquarii.

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References

  1. 1

    Merrill, P. W., The Spectra of Long-Period Variable Stars, (University of Chicago Press, 1940).

    • 2

      Payne-Gaposhkin, C., The Galactic Novae, 219 (Dover Publications, New York, 1964).

      • 3

        Gregory, P. C., Kronberg, P. P., Seaquist, E. R., Hughes, V. A., Woodsworth, A., Viner, M. R., and Retallack, D., Nature, 239, 440 (1972).

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        Lampland, C. O., Publ. Am. Astro. Soc., 4, 230 (1923).

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        Lampland, C. O., Publ. Am. Astro. Soc., 4, 366 (1923).

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        Mount Wilson Annual Report (1942–43), 12.

        • 7

          Stein, W. A., Gaustad, J. E., Gillett, F. C., and Knackle, R. F., Astrophys. J. Lett., 155, L3 (1969).

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          Woolf, N. J., Astrophys. J. Lett., 157, L37 (1969).

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        Author information

          • P. C. GREGORY

          Present address: Physics Department and Institute for Astronomy, The University of British Columbia, Vancouver, BC, V6T 1W5

        Affiliations

        1. David Dunlap Observatory, University of Toronto, Richmond Hill, Ontario

          • P. C. GREGORY
          •  & E. R. SEAQUIST

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        https://doi.org/10.1038/247532a0

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