Optical studies of two Large Magellanic Cloud X-ray transients: RX J0544.1–7100 and RX J0520.5–6932 |
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| Authors: | MJ Coe I Negueruela DAH Buckley NJ Haigh SGT Laycock |
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| Institution: | ;1Physics and Astronomy Department, The University, Southampton SO17 1BJ;2SAX SDC, Agenzia Spaziale Italiana, c/o Telespazio, via Corcolle 19, 00131 Roma, Italy;3Observatoire de Strasbourg, 11 rue de l'Universite, Strasbourg 67000, France;4South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa |
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| Abstract: | We report observations that confirm the identities of the optical counterparts to the transient sources RX J0544.1–7100 and RX J0520.5–6932 . The counterparts are suggested to be B-type stars. Optical data from the observations carried out at ESO and SAAO, together with results from the OGLE data base, are presented. In addition, X-ray data from the RXTE All-Sky Monitor are investigated for long-term periodicities. A strong suggestion for a binary period of 24.4 d is seen in RX J0520.5–6932 from the OGLE data. |
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| Keywords: | binaries: general stars: emission-line Be pulsars: general infrared: stars X-rays: stars |
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