5 papers
Synthetic Observed-Band Light Curves of Delta Cephei from MESA-RSP Models
Zuhoor Elahi, Christopher Sirola, Wafa Gull
Observed-band light curves provide a stronger test of Cepheid pulsation models than period matching alone, because the measured photometric amplitude depends on the phase-dependent…
Nonlinear MESA-RSP Modeling of Delta Cephei: Period Matching, Amplitude Control, and Model-Acceptance Diagnostics
Zuhoor Elahi, Christopher Sirola, Wafa Gull
Delta Cephei is the prototype classical Cepheid and a useful target for testing whether a one-dimensional nonlinear radial-pulsation workflow can satisfy more than a period constra…
Native-Opacity Sensitivity of a Fixed Delta Cephei MESA-RSP Pulsation Model
Zuhoor Elahi, Christopher Sirola, Wafa Gull
Radiative opacity is one of the central microphysical inputs controlling the thermal response of Cepheid envelopes and the driving or damping of radial pulsations. We present a con…
Semi-Empirical Pulsation Reconstruction of Delta Cephei with Photometry, Radial Velocities, and Temperature Constraints
Zuhoor Elahi, Wafa Gull
We present a semi-empirical reconstruction of the pulsation behavior of the classical Cepheid delta Cephei using observed Johnson-V photometry, HARPS-N radial velocities, and publi…
A Reproducible AAVSO Johnson-V Fourier Template for the Prototype Cepheid Delta Cephei
Zuhoor Elahi, Wafa Gull
We present an empirical Fourier reconstruction of the observed Johnson-V light curve of the prototype Classical Cepheid Delta Cephei. The goal is not to infer a full physical stell…