19 citations · 69 across the 14 of their papers we have counts for
14 papers
Pulsation periods reveal tension between theoretical and empirical radii for classical Cepheids in eclipsing binary systems
O. Ziółkowska, R. Smolec, R. Singh Rathour +1
Context. With their precisely determined physical parameters, classical Cepheids in eclipsing binary systems are often used to constrain stellar evolution and pulsation theories. T…
Toward a Comprehensive Grid of Cepheid Models with MESA. III. Evolutionary and Pulsation Relations for Models with Core and Envelope Overshooting
R. Smolec, O. Ziółkowska, R. Singh Rathour +2
Evolutionary tracks for 2-8M models, covering a [Fe/H]=1.0 () to [Fe/H]=+0.2 () metallicity range are computed with Modules for Experiments in Stellar…
Non-evolutionary effects on period change in Magellanic Cepheids II. Empirical constraints on non-linear period changes
Rajeev Singh Rathour, Radosław Smolec, Gergely Hajdu +5
Classical Cepheids are not only excellent standard candles, but also invaluable tools to test stellar evolution and pulsation theories. Rates of their pulsation period change, quan…
Non-evolutionary effects on period change in Magellanic Cepheids
R. S. Rathour, R. Smolec, G. Hajdu +5
Classical Cepheids are a cornerstone class of pulsators, fundamental to testing stellar evolution and pulsation theories. Their secular period changes, characterized through …
Toward a Comprehensive Grid of Cepheid Models with MESA I. Uncertainties of the Evolutionary Tracks of Intermediate-Mass Stars
Oliwia Ziółkowska, Radosław Smolec, Anne Thoul +3
Helium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops - the part of the e…
Non-evolutionary effects on period change in Magellanic Cepheids I. New binary systems revealed from Light Travel Time Effect
Rajeev Singh Rathour, Gergely Hajdu, Radosław Smolec +5
Period change studies give a window to probe into the evolution and dynamics of Cepheids. While evolutionary period changes have been well studied both observationally and theoreti…
Pulsation modelling of the Cepheid Y Ophiuchi with RSP/MESA. Impact of the circumstellar envelope and a high projection factor on Baade-Wesselink method
V. Hocdé, R. Smolec, P. Moskalik +2
Y~Ophiuchi (Y~Oph) is a classical Cepheid reported to be as dim as a Cepheid of about half its pulsation period, and exhibits a low radial velocity and light-curves amplitude. Our…
Precise Fourier parameters of Cepheid Radial Velocity Curves
V. Hocdé, P. Moskalik, N. A. Gorynya +3
The primary goal of this paper is to derive precise Fourier parameters of the radial velocity (RV) curves for fundamental and first-overtone Galactic Cepheids. For each star, we ca…
Metallicity estimation of MW, SMC and LMC classical Cepheids from the shape of the - and -band light curves
V. Hocdé, R. Smolec, P. Moskalik +2
Estimating metallicity of classical Cepheids is of prime importance for studying metallicity effect on stellar evolution, chemical evolution of galaxies, and ultimately its impact…
First Overtone Cepheids of the OGLE Magellanic Cloud Collection -- beyond radial modes
R. Smolec, O. Ziółkowska, M. Ochalik +1
We have analysed Optical Gravitational Lensing Experiment photometry for first overtone classical Cepheids in the Large and Small Magellanic Clouds in search for additional periodi…
Evolved eclipsing binary systems in the Galactic bulge: Precise physical and orbital parameters of OGLE-BLG-ECL-305487 and OGLE-BLG-ECL-116218
K. Suchomska, D. Graczyk, C. Gałan +17
Our goal is to determine, with high accuracy, the physical and orbital parameters of two double-lined eclipsing binary systems, where the components are two giant stars. We also ai…
Early recognition of Microlensing Events from Archival Photometry with Machine Learning Methods
I. Gezer, Ł. Wyrzykowski, P. Zieliński +6
Gravitational microlensing method is a powerful method to detect isolated black holes in the Milky Way. During a microlensing event brightness of the source increases and this feat…
Single-lens mass measurement in the high-magnification microlensing event Gaia19bld located in the Galactic disc
K. A. Rybicki, Ł. Wyrzykowski, E. Bachelet +66
We present the photometric analysis of Gaia19bld, a high-magnification () microlensing event located in the southern Galactic plane, which exhibited finite source and m…
Lens parameters for Gaia18cbf -- a long gravitational microlensing event in the Galactic plane
Katarzyna Kruszyńska, Ł. Wyrzykowski, K. A. Rybicki +29
Context: The timescale of a microlensing event scales as a square root of a lens mass. Therefore, long-lasting events are important candidates for massive lenses, including black h…