Abstract
PRECISE (20–40″) celestial positions of 10 galactic X-ray sources in the region 55° < lII < 320° are reported here. These positions were measured with the rotating modulation collimator detectors on the SAS-3 X-ray observatory. The data were taken as part of a systematic survey of the galactic plane1–7. Five positions reaffirm the identification of optical counterparts for 4U0614+09 (refs 8, 9), 2S0053+604 (refs 1, 10), 4U1145−61 (refs 1, 11–13), GX301−2 (refs 1, 12, 14), and GX304−1 (refs 1 15). Positions for the latter four sources and for 4U0142+61 are refinements of previously reported SAS-3 positions1,16. The position for 2S0114+650 has led to the discovery of an optical counterpart17,18. Positions for 4U0142+61, 4U0919−54, A1239−59, and 4U1254−69 are also presented, The optical counterparts of these sources are still to be discovered. The source 2S0114+650 was discovered as part of this work.
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DOWER, R., APPARAO, K., BRADT, H. et al. Positions of galactic X-ray sources: 55° < lII < 320°. Nature 273, 364–367 (1978). https://doi.org/10.1038/273364a0
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DOI: https://doi.org/10.1038/273364a0
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