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On the optical identifications of five X-ray sources

Nature volume 269, pages 21–25 (1977)Cite this article

A Corrigendum to this article was published on 29 September 1977

Abstract

The data from a recently completed survey of the galactic plane with the SAS-3 modulation collimators provide precise (20″–60″) celestial positions of galactic X-ray sources. Preliminary positions of 60″ precision are reported for five sources. One of these led to the identification of the star, γ Cas, as an X-ray source, and the others lend substantial confidence to previously proposed optical identifications: 3U0352 + 30 = X Per, 3U1145 − 61 =HEN 715, GX301 − 2 = WRA977, and GX304 − 1 = MMV star. These identifications seem to establish the existence of a previously suggested class of De-star X-ray emitters.

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Author notes

  1. F. Walter

    Present address: Department of Astronomy, University of California, Berkeley, California, 94720

Authors and Affiliations

  1. Department of Physics and Center for Space Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139

    H. V. Bradt, K. M. V. Apparao, G. W. Clark, R. Dower, R. Doxsey, D. R. Hearn, J. G. Jernigan, P. C. Joss, W. Mayer, J. McClintock & F. Walter

  2. Tata Institute of Fundamental Research, Bombay, India

    K. M. V. Apparao

Authors
  1. H. V. Bradt
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  2. K. M. V. Apparao
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  5. R. Doxsey
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  7. J. G. Jernigan
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Additional information

The erratum article can be found online at https://doi.org/10.1038/269450e0

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Bradt, H., Apparao, K., Clark, G. et al. On the optical identifications of five X-ray sources. Nature 269, 21–25 (1977). https://doi.org/10.1038/269021a0

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