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New orbital ephemerides for the dipping source 4U 1323-619: constraining the distance to the source

Sanna, A.; Di Salvo, T.; Burderi, L. +6 more

Context. 4U 1323-619 is a low mass X-ray binary system that shows type I X-ray bursts and dips. The most accurate estimation of the orbital period is 2.941923(36) h and a distance from the source that is lower than 11 kpc has been proposed.
Aims: We aim to obtain the orbital ephemeris, the orbital period of the system, as well as its derivati…