75 citations · 198 across the 11 of their papers we have counts for
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Tools for Characterizing the Numerical Error of Stellar Oscillation Codes
Richard H. D. Townsend, Rianna V. Kuenzi, Jørgen Christensen-Dalsgaard
Stellar oscillation codes are software instruments that evaluate the normal-mode frequencies of an input stellar model. While inter-code comparisons are often used to confirm the c…
The Contour Method: a new approach to finding modes of non-adiabatic stellar pulsations
J. Goldstein, R. H. D. Townsend
The contour method is a new approach to calculating the non-adiabatic pulsation frequencies of stars. These frequencies can be found by solving for the complex roots of a character…
The Variable Line Width of Achernar
Th. Rivinius, R. H. D. Townsend, D. Baade +3
Spectroscopic observations of Achernar over the past decades, have shown the photospheric line width, as measured by the rotational parameter , to vary in correlation wit…
Variable rotational line broadening in the Be star Achernar
Th. Rivinius, D. Baade, R. H. D. Townsend +2
The main theoretical problem for the formation of a Keplerian disk around Be stars is how to supply angular momentum from the star to the disk, even more so since Be stars probably…
Basic parameters and properties of the rapidly rotating magnetic helium strong B star HR7355
Th. Rivinius, R. H. D. Townsend, O. Kochukhov +4
The spectral and magnetic properties and variability of the B2Vnp emission-line magnetosphere star HR7355 were analyzed. The object rotates at almost 90% of the critical value, mea…
The (B0+?)+O6 system FN CMa: A case for tidal-pulsational interaction?
Th. Rivinius, O. Stahl, S. Štefl +3
FN CMa is visually double with a separation of about 0.6arcsec. Sixty high-cadence VLT/UVES spectra permit the A and B components to be disentangled, as the relative contribution o…
The rapid magnetic rotator HR7355
Th. Rivinius, R. H. D. Townsend, S. Štefl +1
For early type magnetic stars slow, at most moderate rotational velocities have been considered an observational fact. The detection of a multi-kilogauss magnetic field in the B2Vp…
Magnetism of the He-weak star HR2949
Th. Rivinius, G. Wade, R. H. D. Townsend +4
A magnetic field and rotational line profile variability (lpv) is found in the He-weak star HR2949. The field measured from metallic lines varies in a clearly non-sinusoidal way, a…
Magnetic field detection in the B2Vn star HR 7355
Th. Rivinius, Th. Szeifert, L. Barrera +3
The B2Vn star HR 7355 is found to be a He-rich magnetic star. Spectropolarimetric data were obtained with FORS1 at UT2 on Paranal observatory to measure the disk-averaged longitudi…