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    • Pilecki, Bogumil; Gieren, Wolfgang; Smolec, Radoslaw; Pietrzynski, Grzegorz; Thompson, Ian B.; Anderson, Richard I.; Bono, Giuseppe; Soszynski, Igor; Kervella, Pierre; Nardetto, Nicolás; Taormina, Mónica; Stepien, Kazimierz; Wielgorski, Piotr (IOP Publishing, 2017)
      We present the results of a study of the type II Cepheid (P-puls = 4.974 days) in the eclipsing binary system OGLELMC- T2CEP-098 (P-orb = 397.2 days). The Cepheid belongs to the peculiar W Vir group, for which the evolutionary ...
    • Breuval, Louise; Kervella, Pierre; Anderson, Richard; Riess, Adam G.; Arenou, Frédéric; Trahin, Boris; Mérand, Antoine; Gallenne, A.; Gieren, Wolfgang; Storm, J.; Bono, Giuseppe; Pietrzynski, Grzegorz; Nardetto, Nicolas; Javanmardi, Behnam; Hocde, Vincent (EDP Sciences, 2020)
      Aims. Classical Cepheids provide the foundation for the empirical extragalactic distance ladder. Milky Way Cepheids are the only stars in this class accessible to trigonometric parallax measurements. However, the parallaxes ...