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The long term variability of 4U 1258-61 (GX304-1) |
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| Authors: | R H D Corbet A P Smale J W Menzies G Branduardi-Raymont P A Charles K O Mason |
| Institution: | (1) Astrophysics Department, Oxford University, South Parks Road, 0X1 3RQ Oxford, UK;(2) MSSL, University College London, Holmbury St. Mary, RH5 6NT Dorking, UK;(3) South African Astronomical Observatory, PO Box 9, 7935 Observatory, South Africa |
| Abstract: | We present optical spectroscopy and photometry of 4U 1258-61 obtained over the course of six years. Evidence for the evolution of a circumstellar envelope throughout the course of the observations is presented. |
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