133 citations · 365 across the 12 of their papers we have counts for
11 papers
Multi-element Doppler imaging of the CP2 star HD 3980
N. Nesvacil, T. Lüftinger, D. Shulyak +8
In atmospheres of magnetic main-sequence stars, the diffusion of chemical elements leads to a number of observed anomalies, such as abundance spots across the stellar surface. The…
A self consistent chemically stratified atmosphere model for the roAp star 10 Aquilae
Nicole Nesvacil, Denis Shulyak, Tanya A. Ryabchikova +3
Context: Chemically peculiar A type (Ap) stars are a subgroup of the CP2 stars which exhibit anomalous overabundances of numerous elements, e.g. Fe, Cr, Sr and rare earth elements.…
Distance Scale Zero-Points from Galactic RR Lyrae Star Parallaxes
G. Fritz Benedict, Barbara E. McArthur, Michael W. Feast +15
We present new absolute trigonometric parallaxes and proper motions for seven Pop II variable stars: five RR Lyr variables; RZ Cep, XZ Cyg, SU Dra, RR Lyr, UV Oct; and two type 2 C…
Surface structure of the CoRoT CP2 target star HD 50773
T. Lüftinger, H. -E. Fröhlich, W. Weiss +15
We compare surface maps of the chemically peculiar star HD 50773 produced with a Bayesian technique and based on high quality CoRoT photometry with those derived from rotation phas…
A study of the magnetic helium variable emission-line star HD 125823
S. Hubrig, N. Nesvacil, F. Gonzalez +2
The 5.9 M_sun star HD 125823 is a striking helium variable with a period of 8.82 d, ranging in helium spectral type from He-strong B2 to He-weak B8. For the first time we present h…
Two new chemically peculiar stars with resolved magnetically split lines
S. Hubrig, N. Nesvacil
We report the discovery of resolved magnetically split lines in two chemically peculiar stars, the SrEuCr star HD 92499 and the Bp SiCr star HD 157751. From FEROS spectra, we have…