7 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 joint 1% calibration of the RR Lyrae & type-II Cepheid Leavitt laws yields homogeneous distances to 93 Galactic globular clusters
Bastian Lengen, Richard I. Anderson, Mauricio Cruz Reyes +1
Recent work has established large samples of astrometrically confirmed RR Lyrae and type-II Cepheid members of Galactic globular clusters (GCs). Any given GC can contain multiple s…
V659 Cen: System Parameters Updated
Nancy Remage Evans, Charles Proffitt, Pierre Kervella +8
V659 Cen is a classical Cepheid which is part of a multiple system. Previous observations have shown that a hot companion dominates an ultraviolet spectrum and a cooler main sequen…
Mass of Cepheid V350 Sgr Incorporating Interferometry and the Companion Mass
Nancy Remage Evans, Alexandre Gallenne, Pierre Kervella +8
The system V350 Sgr has a classical Cepheid for the primary. Interferometry is presented for the system and the full orbit is determined. The mass of the companion has been determi…
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…