524 citations
- Perimeter InstituteCA28 papers
- Royal Military College of CanadaCA14 papers
- Center for Astrophysics Harvard & SmithsonianUS11 papers
- University of ViennaAT10 papers
- European Southern ObservatoryCL9 papers
- Armagh Observatory & PlanetariumGB8 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR8 papers
- Observatoire Midi-PyrénéesFR8 papers
- Bogolyubov Institute for Theoretical PhysicsUA7 papers
- California Institute of TechnologyUS7 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Harvard UniversityUS7 papers
18 papers · 2 filters
Quasar Broad Absorption Line Variability on Multi-Year Time Scales
Robert R. Gibson, W. N. Brandt, Donald P. Schneider +1
We use quantitative metrics to characterize the variation of CIV 1549 A broad absorption lines (BALs) over 3--6 (rest-frame) years in a sample of 13 quasars at 1.7 <= z <= 2.8 and…
Characterisation of the magnetic field of the Herbig Be star HD 200775
E. Alecian, C. Catala, G. A. Wade +9
After our recent discovery of four magnetic Herbig stars, we have decided to study in detail one of them, HD 200775, to determine if its magnetic topology is similar to that of the…
Rotation and Macroturbulence in Metal-poor Field Red Giant and Red Horizontal Branch Stars
Bruce W. Carney, David F. Gray, David Yong +4
We report the results for rotational velocities, Vrot sin i, and macroturbulence dispersion, zeta(RT), for 12 metal-poor field red giant branch stars and 7 metal-poor field red hor…
Structural parameters for globular clusters in NGC 5128. III. ACS surface-brightness profiles and model fits
Dean E. McLaughlin, Pauline Barmby, William E. Harris +2
We present internal surface-brightness profiles, based on HST/ACS imaging in the F606W bandpass, for 131 globular cluster (GC) candidates with luminosities 10^4 - 3 x 10^6 solar, i…
Magnetism, rotation and accretion in Herbig Ae-Be stars
E. Alecian, G. A. Wade, C. Catala +7
Studies of stellar magnetism at the pre-main sequence phase can provide important new insights into the detailed physics of the late stages of star formation, and into the observed…
Weak magnetic fields in Ap/Bp stars: Evidence for a dipole field lower limit and a tentative interpretation of the magnetic dichotomy
M. Auriere, G. A. Wade, J. Silvester +22
We have investigated a sample of 28 well-known spectroscopically-identified magnetic Ap/Bp stars, with weak, poorly-determined or previously undetected magnetic fields, with the ai…