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Title: Apsidal motion in 4U 0115+63 and orbital parameters of 2S 1417−624 and V0332+53
Authors: Raichur, Harsha
Paul, Biswajit
Keywords: binaries: general
stars: emission line
Be, stars
individual: 4U0115+63, stars
2S1417-624, X-rays
Issue Date: Aug-2010
Publisher: Wiley-Blackwell for the RAS
Citation: Monthly Notices of the Royal Astronomical Society, 2010, Vol. 406, p2663
Abstract: Be/X-ray binary pulsars have wide eccentric orbits and hence the angle of periastron of the orbit is very well defined in these sources. The presence of an X-ray pulsar allows for accurate measurements of orbital elements. A Be star usually is a rapidly rotating star and hence will deviate from spherical geometry. The tidal interaction between the neutron star and the Be star will add to the distortion of the Be star and alter its mass distribution. Thus a measurable rate of apsidal motion is expected from these systems. In this paper, we present the first conclusive detection of apsidal motion of the binary 4U0115+63. We also present new and accurate orbital parameters of the Be/X-ray binaries V0332+53 and 2S1417-624.
Description: Restricted Access.
ISSN: 1365-2966-(Online)
Alternative Location:
Copyright: 2010 The Authors & the Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

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