SIMBAD references

2019MNRAS.484.4347V - Mon. Not. R. Astron. Soc., 484, 4347-4351 (2019/April-2)

The orbital parameters of the gamma-ray binary LMC P3+.

VAN SOELEN B., KOMIN N., KNIAZEV A. and VAISANEN P.

Abstract (from CDS):

LMC P3 is the most luminous gamma-ray binary discovered to date and the first detected outside of the Galaxy, with an orbital period of 10.301 d. We report on optical spectroscopic observations undertaken with the Southern African Large Telescope using the High Resolution Spectrograph. We find the binary is slightly eccentric, e = 0.40 ± 0.07, and place the time of periastron at HJD 2457412.13 ± 0.29. Stellar model fitting finds an effective temperature of T eff_ = 36351 ±53 K. The mass function, f = 0.0010 ± 0.0004 M, favours a neutron star compact object. The phases of superior and inferior conjunctions are 0.98 and 0.24, respectively (where phase 0 is at the Fermi-LAT maximum), close to the reported maxima in the GeV and TeV light curves.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: spectroscopic - stars: massive - stars: neutron - gamma-rays: stars

Simbad objects: 6

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2019.10.14-21:20:28

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