D. H. Maxwell, A. J. Norton, P. Roche
Published 2000-11-22Version 1
OAO1657-415 is only the seventh eclipsing X-ray pulsar known and therefore has the potential to yield only the seventh mass of a neutron star in an X-ray binary. Here we report photometric and spectroscopic observations of candidates for the optical counterpart to the system and identify a B6V or B5III star as a possible companion to the neutron star. We measure the observational parameters of the star and suggest reasons why OAO1657-415 may be unlike other high mass X-ray binaries.
Comments: 5 pages, 5 figures, to be published in 'Evolution of binary and multiple star systems', proceedings of conference, Bormio
XMM-Newton observations of High Mass X-ray Binaries in the SMC
Hunting for Magnetars in High Mass X-ray Binaries. The Case of SuperGiant Fast X-Ray Transients
High Mass X-ray Binaries and Recent Star Formation History of the Small Magellanic Cloud
