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Investigation of the parameters of the massive binary X-ray system IGR J17544-2619

  • Galaxy Stars
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Bulletin of the Crimean Astrophysical Observatory

Abstract

The paper presents the results of spectroscopic research of the high-mass X-ray binary IGRJ17544-2619 optical component that were carried out with the RTT-150. The analysis of a long series of spectroscopic observations of the optical star of IGRJ17544-2619 system in 2007–2011 was carried out. Orbital parameters of the system were obtained: γ-velocity of 47 km/s, semiamplitude of radial velocity curve K = 30.5 km/s, eccentricity e = 0.44, longitude of the periastron ω = 142°, and an orbital period of the system of 12.17 days. The lower limit of the compact object mass was found to be equal to M = 2.82M .

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Correspondence to E. A. Nikolaeva.

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Original Russian Text © E.A. Nikolaeva, I.F. Bikmaev, S.S. Melnikov, A.I. Galeev, R.Ya. Zhuchkov, E.N. Irtuganov, 2013, published in Izvestiya Krymskoi Astrofizicheskoi Observatorii, 2013, Vol. 109, pp. 44–51.

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Nikolaeva, E.A., Bikmaev, I.F., Melnikov, S.S. et al. Investigation of the parameters of the massive binary X-ray system IGR J17544-2619. Bull.Crim. Astrophys. Observ. 109, 27–31 (2013). https://doi.org/10.3103/S0190271713010166

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  • DOI: https://doi.org/10.3103/S0190271713010166

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