38 citations · 65 across the 6 of their papers we have counts for
6 papers
Two Wolf-Rayet stars at the heart of colliding-wind binary Apep
J. R. Callingham, P. A. Crowther, P. M. Williams +4
Infrared imaging of the colliding-wind binary Apep has revealed a spectacular dust plume with complicated internal dynamics that challenges standard colliding-wind binary physics.…
Cyg OB2 #5: When three stars are just not enough
M. Kennedy, S. M. Dougherty, P. M. Williams +1
Archival observations from the Very Large Array (VLA) at frequencies between 1.4 GHz and 43 GHz of the 6.6-day O6.5-7+O5.5-6 binary Cyg OB2 #5 over 20 years are re-examined. The ai…
Heated dust around the LMC Wolf-Rayet system HD 36402 (BAT99-38)
P. M. Williams
Infrared photometry of the probable triple WC4 (+O?) +O8I: system HD 36402 (BAT99-38) in the LMC shows emission characteristic of heated dust. Although HD 36402 is close to two lum…
Modelling the radio emission from Cyg OB2 #5: a quadruple system?
M. Kennedy, S. M. Dougherty, P. M. Williams +1
Fifty archival radio observations of the supergiant binary Cyg OB2 #5 using the Very Large Array over 20 years are re-examined to determine the location and character of the previo…
Are WC9 Wolf-Rayet stars in colliding-wind binaries?
P. M. Williams, K. A. van der Hucht, G. Rauw
We present results from a spectroscopic search for massive companions to dust-making Galactic WC9 stars as a step to testing the paradigm that dust formation in these systems requi…
Mapping WR140 from infrared spectroscopy and imaging
P. M. Williams, W. P. Varricatt, A. P. Marston +1
Observations of the 1.083-micron He I line in WR140 (HD 193793) show P-Cygni profiles which varied as the binary system went through periastron passage. A sub-peak appeared on the…