PHOEBE binary star modelling in the era of Kepler and TESS
PHOEBE2 (PHysics of Eclipsing BinariEs 2) is an open source binary star modelling code, which reproduces and fits light and radial velocity curves, spectral...
Phoenix: ``halo/disk'' structures in dwarf galaxies
Hierarchical clustering scenarios for galaxy formation predict that dwarf galaxies are the first to be formed and that they are building blocks of larger...
Photographic catalog of selected planetary size comparisons
This publication utilizes photographs taken by NASA spacecraft, and cartographic products based on these photos, to illustrate size comparisons of the planets...
Photoionization Models of Metal-poor Extragalactic H 0 Regions and the Primordial Helium Abundance
We discuss the effects of collisional enhancement of Balmer lines on the determination of the primordial helium abundance. To this aim, we present a...