From the 1 of 4 linked papers with an AI index.
4 papers
Pulsation harmonics reveal the origin of the century-old Blazhko effect
Jia-Shu Niu
The study analyzes Kepler short‑cadence data of the RR Lyrae star V783 Cyg and finds a set of ‘disharmonized’ pulsation harmonics whose amplitudes vary opposite to the fundamental…
Harmonics as a Hidden Window into the Turbulent Convective Envelope of non-Blazhko RRab Stars
Jia-Shu Niu
Harmonics in pulsating stars have traditionally been regarded as mere Fourier artifacts, fully determined by their parent mode. Recent observations of high-amplitude Scuti sta…
Discovery of resonating integration modes in triple-mode high-amplitude Scuti stars: A new evolutionary phase indicator
Jia-Shu Niu, Hui-Fang Xue
High-amplitude Scuti stars (HADS) that pulsate in their first three radial modes are rare in current samples. Here, we analyse five such triple-mode HADS observed by the Trans…
Period Variation Rates of Four Radial Single-Mode High-Amplitude Delta Scuti Stars
Tian-Fang Ma, Jia-Shu Niu, Hui-Fang Xue
In this work, we present a study on the long time-scale period variations of four single-mode high-amplitude delta Scuti stars (HADS) via the classical analysis. The target H…