2000ApJ...542L.131C

Query : 2000ApJ...542L.131C

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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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SK 160 HXB 01 17 05.1457288392 -73 26 36.014808156 12.23 13.00 13.15   13.17 O9.7Ia+ 918 0
2 V* V779 Cen HXB 11 21 15.0920532528 -60 37 25.630264596   14.4 12.27     O9III/Veq 1159 0
3 V* QV Nor HXB 15 42 23.3633146128 -52 23 09.577395960   16.3 14.5     B0.2Ia 455 1
4 HD 153919 HXB 17 03 56.7725629224 -37 50 38.913331452 6.06 6.78 6.51 6.08 5.90 O6Iafcp 851 0

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