4 papers
VELOCE III. Reconstructing Radial Velocity Curves of Classical Cepheids
Giordano Viviani, Richard I. Anderson
We present a novel framework for accurately reconstructing radial velocity (RV) curves of classical Cepheids (Cepheids) from sparsely sampled time-series data suitable for applicat…
A bird's eye view of stellar evolution through populations of variable stars in Galactic open clusters
Richard I. Anderson, Emily L. Hunt
Both star clusters and variable stars are sensitive laboratories of stellar astrophysics and evolution: cluster member stars provide context for interpreting cluster populations, w…
The VELOCE modulation zoo III. Detecting additional pulsation modes in optical spectra of classical Cepheids using semi-partial distance correlation periodograms
Kent Barbey, Richard Irving Anderson, Giordano Viviani +5
Known for their large amplitude radial pulsations, classical Cepheids are critical standard candles in astrophysics. However, they also exhibit various pulsational irregularities a…
The VELOCE modulation zoo II. Humps and splitting patterns in spectral lines of classical Cepheids
H. Netzel, R. I. Anderson, G. Viviani
Line splitting in spectral lines is observed in various types of stars due to phenomena such as shocks, spectroscopic binaries, magnetic fields, spots, and non-radial modes. In pul…