On the optical identifications of five X-ray sources

  • 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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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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