1 citations · 3 across the 9 of their papers we have counts for
9 papers
Super-slowly rotating Ap (ssrAp) stars: Spectroscopic study
G. Mathys, D. L. Holdsworth, M. Giarrusso +3
To gain better understanding of the Ap stars with the longest rotation periods, we obtained high resolution spectra of a sample of super-slowly rotating Ap (ssrAp) star candidates…
Magnetic field of the roAp star KIC~10685175: observations versus theory
Fangfei Shi, Huawei Zhang, Swetlana Hubrig +5
KIC 10685175 is a roAp star whose polar magnetic field is predicted to be 6 kG through a non-adiabatic axisymmetric pulsation theoretical model. In this work, we aim to measure the…
Characterization of the Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations
Z. Jennings, J. Southworth, S. A. Rappaport +3
Stellar theory enables us to understand the properties of stars at different stages of their evolution, and contributes to other fields of astrophysics such as galactic and exoplan…
Oscillation Frequencies of Moderately Rotating Delta Scuti Stars: Asymmetric Mode Splittings Due to Non-spherical Distortion
Zhao Guo, Timothy R. Bedding, A. A. Pamyatnykh +5
We find that the observed pressure-mode rotational splittings of slowly/moderately rotating Delta Scuti stars and Beta Cephei stars mostly have a positive asymmetry. That is, the l…
HD 12098: a highly distorted dipole mode in an obliquely pulsating roAp star
D. W. Kurtz, H. Saio, D. L. Holdsworth +2
HD 12098 is an roAp star pulsating in the most distorted dipole mode yet observed in this class of star. Using TESS Sector 58 observations we show that there are photometric spots…
Testing pulsation diagnostics in the rapidly oscillating magnetic Ap star Equ using near-infrared CRIRES+ observations
S. P. Järvinen, S. Hubrig, B. Wolff +5
Pulsations of rapidly oscillating Ap stars and their interaction with the stellar magnetic field have not been studied in the near-IR region despite the benefits these observations…
TESS Cycle 2 observations of roAp stars with 2-min cadence data
D. L. Holdsworth, M. S. Cunha, M. Lares-Martiz +46
We present the results of a systematic search of the Transiting Exoplanet Survey Satellite (TESS) 2-min cadence data for new rapidly oscillating Ap (roAp) stars observed during the…
Long-period Ap stars discovered with TESS data: Cycles 3 and 4
G. Mathys, D. L. Holdsworth, D. W. Kurtz
The rotation periods of Ap stars span more than five orders of magnitude. The physical origin of this differentiation remains poorly understood. The consideration of the most slowl…
TIC 184743498: The First Tri-Axial Stellar Pulsator
Valencia Zhang, Saul Rappaport, Rahul Jayaraman +4
We have discovered a Scuti pulsator in a tight binary (P = 1.053 d) with nine pulsation modes whose frequencies are between 38 and 56 d. Each of these modes exhibits amp…