SIMBAD references

2000ApJ...542L.131C - Astrophys. J., 542, L131-L133 (2000/October-3)

The orbit of the binary X-ray pulsar 4U 1538-52 from Rossi X-ray timing explorer observations.

CLARK G.W.

Abstract (from CDS):

Improved orbital parameters of the high-mass binary X-ray pulsar 4U 1538-52 have been derived from high count rate data obtained from the Rossi X-Ray Timing Explorer. Pulse-timing analysis yields an eccentricity of 0.174±0.015, a periastron at 64°±9°, and evidence of orbital decay with P{dot}orb/Porb = (-2.9±2.1)x10–6 yr–1.

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Journal keyword(s): Stars: Binaries: Eclipsing - Stars: Pulsars: Individual: Alphanumeric: 4U 1538-52 - X-Rays: Stars

Simbad objects: 4

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