SMOLEC , R.

In the last 20 years, over the course of the Araucaria project, we have studied 20 very special eclipsing binary systems in the Large Magellanic Cloud (LMC). Based on these systems and our newly calibrated surface brightness-colour relation we have measured a distance to the LMC that is accurate to 1%. This is currently the best benchmark for...

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We extended the sample of 35 eclipsing binaries compiled by Graczyk+ (2017ApJ...837....7G) by searching for detached systems in the literature suitable for a precise distance determination. Our sample contains 81 systems (51 on the northern hemisphere and 30 on the southern one). Their basic parameters are presented in Table 1. We used Tycho-2...

Nineteen of the ∼40 RR Lyr stars in the Kepler field have been identified as candidate non-Blazhko (or unmodulated) stars. In this paper we present the results of Fourier decomposition of the time-series photometry of these stars acquired during the first 417 d of operation (Q0–Q5) of the Kepler telescope. Fourier parameters based on ∼18 400...

We present the first analysis of Cepheid stars observed by the TESS space mission in Sectors 1 to 5. Our sample consists of 25 pulsators: ten fundamental mode, three overtone and two double-mode classical Cepheids, plus three Type II and seven anomalous Cepheids. The targets were chosen from fields with different stellar densities, both from...