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The magnetic field and wind confinement of θ1 Orionis C
- J. Donati, J. Babel, T. Harries, I. Howarth, P. Petit, M. Semel
- Physics
- 11 June 2002
We report the detection, through spectropolarimetric observations, of a strong dipolar magnetic field of presumably fossil origin at the surface of the very young O star theta (1) Ori C. The Stokes V…
Magnetospheric accretion on the T Tauri star BP Tauri
- J. Donati, M. Jardine, E. Alecian
- Physics
- 14 February 2008
From observations collected with the ESPaDOnS and NARVAL spectropolarimeters, we report the detection of Zeeman signatures on the classical T Tauri star BP Tau. Circular polarisation signatures in…
Forty eclipsing binaries in the Small Magellanic Cloud: fundamental parameters and Cloud distance
- T. Harries, R. Hilditch, I. Howarth
- Physics
- 11 February 2003
We have conducted a programme to determine the fundamental parameters of a substantial number of eclipsing binaries of spectral types O and B in the Small Magellanic Cloud (SMC). New spectroscopic…
A 2dF survey of the Small Magellanic Cloud
- C. Evans, I. Howarth, M. Irwin, A. Burnley, T. Harries
- Physics
- 18 June 2004
We present a catalogue of new spectral types for hot, luminous stars in the Small Magellanic Cloud (SMC). The catalogue contains 4161 objects, giving an order-of-magnitude increase in the number of…
On the formation of Hα line emission around classical T Tauri stars
- R. Kurosawa, T. Harries, Neil H. Symington University of Exeter, U. S. Andrews
- Physics
- 9 May 2006
We present radiative transfer models of the circumstellar environment of classical T Tauri stars, concentrating on the formation of the Hα emission. The wide variety of line profiles seen in…
Three-dimensional dust radiative-transfer models: the Pinwheel Nebula of WR 104
- T. Harries, J. Monnier, N. Symington, R. Kurosawa
- Physics
- 27 January 2004
We present radiative-transfer modelling of the dusty spiral Pinwheel Nebula observed around the Wolf‐Rayet/OB-star binary WR 104. The models are based on the three-dimensional radiative-transfer code…
A Tale of Two Herbig Ae Stars, MWC 275 and AB Aurigae: Comprehensive Models for Spectral Energy Distribution and Interferometry
- A. Tannirkulam, J. Monnier, N. Turner
- Physics
- 12 August 2008
We present comprehensive models for the Herbig Ae stars MWC 275 and AB Aur that aim to explain their spectral energy distribution (from UV to millimeter) and long-baseline interferometry (from…
Benchmark problems for continuum radiative transfer. High optical depths, anisotropic scattering, an
- C. Pinte, T. Harries, M. C. Duran-Rojas
- Physics
- 6 March 2009
Solving the continuum radiative transfer equation in high opacity media requires sophisticated numerical tools. In order to test the reliability of such tools, we present a benchmark of radiative…
Synthetic line profiles of rotationally distorted hot-star winds
- T. Harries
- Physics
- 11 July 2000
ABSTRA C T A new Monte Carlo stellar wind radiative-transfer code is presented. The code employs a three-dimensional opacity grid, and fully treats polarization and multiple scattering. Either Mie or…
Probing the circumstellar structures of T Tauri stars and their relationship to those of Herbig stars
- Jorick S.Vink, J. Drew, U. Leeds
- Physics
- 25 February 2005
We present Hα spectropolarimetry observations of a sample of 10 bright T Tauri stars, supplemented with new Herbig Ae/Be star data. A change in the linear polarization across Hα is detected in most…
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