21 papers
Incorporating physical source parameters into microlensing modeling
Mateusz J. Mróz, RadosÅaw Poleski, Andrzej Udalski +14
Modeling of complex microlensing events suffers from many difficult-to-disentangle degeneracies. This is especially the case for orbital motion of the source in a binary system, th…
Rogue Ones: Orbital census of Galactic Cepheids and their Anomalies
Shourya Khanna, Ronald Drimmel, Eloisa Poggio +2
Classical Cepheids (DCEPs) are excellent standard candles expected to trace the spatial and kinematic distribution of the Galaxy's young and dynamically cold stellar disc. Using th…
Eppur binaria non é esclusa: Gaia astrometry does not disfavor a binary origin for Long Secondary Periods
Patryk Iwanek, Piotr A. KoÅaczek-SzymaÅski, Dorota M. Skowron +2
We present an independent reassessment of the nearby long secondary period (LSP) stars analyzed by Shariat et al. (2026). By inspecting long-term All Sky Automated Survey (ASAS) li…
Thirty Circumbinary Disk Occultation Systems (KH 15D-like stars) from the OGLE Project
M. A. Urbanowicz, I. SoszyÅski, P. Pietrukowicz +14
We present a catalog of 30 stars that are candidates for KH 15D-like binary systems, in which the observed brightness variations are caused by a circumbinary dusty disk that period…
The Effect of a Non-universal Extinction Curve on the Wesenheit Function and Cepheid Distances
D. M. Skowron, M. L. Fouesneau, R. Drimmel +1
The Wesenheit function is widely used to reduce the effects of interstellar reddening in distance measurements. Its construction, however, relies on the assumption of a universal e…
The Role of Long Period Variable Stars in Observational Astrophysics
Dorota M. Skowron, Igor SoszyÅski
Long-period variables (LPVs) are evolved red giant and supergiant stars whose pulsations provide unique insights into late stages of stellar evolution and serve as essential tools…