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Classical Cepheids in Eclipsing Binary Systems

The analysis of classical Cepheids in eclipsing binary systems give as opportunity to learn about the physical parameters of these very important objects, which are crucial for our understanding of the theory of evolution and theory of pulsation, and are ones of the most important distance indicators. The candidates for such systems were started to be found since 1999, when microlensing surveys started to observe the nearby galaxies, Large and Small Magellanic Clouds. Yet none of these candidates was confirmed until 2010, when we published our first results on the classical Cepheid OGLE-LMC-CEP-0227 in the eclipsing binary system in the LMC. Our project started a few years earlier with the spectroscopic observations needed to confirm that the Cepheid is a component of this binary and to characterize the system. Until now we have confirmed 4 other systems with a classical Cepheid being one of the components, including one system composed of two Cepheids. I'm leading this project since 2013.

Main results

Most relevant publications

The Araucaria Project: High-precision Cepheid astrophysics from the analysis of variables in double-lined eclipsing binaries
B. Pilecki, W. Gieren, G. Pietrzyński, I. B. Thompson, R. Smolec, D. Graczyk, M. Taormina, A. Udalski, J. Storm, N. Nardetto, A. Gallenne, P. Kervella, I. Soszyński, M. Górski, P. Wielgórski, K. Suchomska, P. Karczmarek, B. Zgirski
2018, ApJ, 862, 43 - More information - Get data
 
The Araucaria Project: A study of the classical Cepheid in the eclipsing binary system OGLE LMC562.05.9009 in the Large Magellanic Cloud
W. Gieren, B. Pilecki, G. Pietrzynski, D. Graczyk, A. Udalski, I. Soszynski, I. B. Thompson, P. G. Prada Moroni, R. Smolec, P. Konorski, M. Górski, P. Karczmarek, K. Suchomoska, M. Taormina, A. Gallenne, J. Storm, B. Giuseppe, M. Catalan, M. Szymański, S...
2015, ApJ, 815, 28 - More information - Get data
 
The Araucaria Project: The First-Overtone Classical Cepheid in the Eclipsing System OGLE-LMC-CEP-2532
B. Pilecki, D. Graczyk, W. Gieren, G. Pietrzynski, I. B. Thompson, R. Smolec, A. Udalski, I. Soszynski, P. Konorski, M. Taormina, A. Gallenne, D. Minniti, M. Catelan
2015, ApJ, 806, 29 - More information - Get data
 
The Araucaria Project. OGLE-LMC-CEP-1718: An Exotic Eclipsing Binary System Composed of Two Classical Overtone Cepheids in a 413 Day Orbit
W. Gieren, B. Pilecki, G. Pietrzyński, D. Graczyk, I. Thompson, I. Soszyński, P. Konorski, R. Smolec, A. Udalski, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne
2014, ApJ, 786, 80 - More information
 
Physical parameters and the projection factor of the classical Cepheid in the binary system OGLE-LMC-CEP-0227
B. Pilecki, D. Graczyk, G. Pietrzyński, W. Gieren, I. Thompson, W. Freedman, V. Scowcroft, B. Madore, A. Udalski, I. Soszyński, P. Konorski, R. Smolec, N. Nardetto, G. Bono, P. Prada Moroni, J. Storm, A. Gallenne
2013, MNRAS, 436, 953 - More information - Get data

Relevant conference publications

Physical properties and evolutionary status of Cepheids in eclipsing binaries in the LMC
Bogumił Pilecki
2019, Zenodo, 3472538
 
The Impact of Eclipsing Binaries with Pulsating Components on the Distance Scale and Stellar Evolution
Bogumił Pilecki
2018, ASPC, 514, 123P
 
Cepheids in Eclipsing Binaries. What and How We Can Learn About Them
Bogumił Pilecki
2018, Proceedings of the PAS, 6, 237
 
Pulsation Theory Models for Cepheids in Eclipsing Binary Systems
Mónica Taormina, Bogumił Pilecki,Radosław Smolec
2018, Proceedings of the PAS, 6, 325
 
Araucaria Project: Pulsating stars in binary systems and as distance indicators
Bogumił Pilecki, W. Gieren, G. Pietrzyński, R. Smolec
2017, EPJWC, 152, 7007

Related publications

Candidates for non-pulsating stars located in the Cepheid instability strip in the Large Magellanic Cloud based on Strömgren photometry
Narloch W., Pietrzyński G., Kołaczkowski Z., Smolec R., Górski M., Kubiak M., Udalski A., Soszyński I., Graczyk D., Gieren W., Karczmarek P., Zgirski B., Wielgórski P., Suchomska K., Pilecki B., Taormina M., Kałuszyński M.
2019, MNRAS, 489, 3285
 
The dynamical mass and evolutionary status of the type-II Cepheid in the eclipsing binary system OGLE-LMC-T2CEP-211 with a double-ring disk
Bogumił Pilecki, A. Dervisoglu, W. Gieren, R. Smolec, I. Soszyński, G. Pietrzyński, I. B. Thompson, M. Taormina
2018, ApJ, 868, 30 - More information - Get data
 
A Geometrical 1\% Distance to the Short-period Binary Cepheid V1334 Cygni
Gallenne, A., Kervella, P., Evans, N.~R., Proffitt, C.~R., Monnier, J.~D., Merand, A., Nelan, E., Winston, E., Pietrzyński, G., Schaefer, G., Gieren, W., Anderson, R.~I., Borgniet, S., Kraus, S., Roettenbacher, R.~M., Baron, F., Pilecki, B., Taormina, M.,...
2018, ApJ, 867, 121
 
CRIRES high-resolution infrared spectroscopy of the long-period Cepheid l Carinae
Nardetto, N.; Poretti, E.; Gallenne, A.; Rainer, M.; Anderson, R. I.; Fouqué, P.; Gieren, W.; Graczyk, D.; Kervella, P.; Mathias, P.; Mérand, A.; Mourard, D.; Neilson, H.; Pietrzynski, G.; Pilecki, B.; Storm, J.; Borgniet, S.; Chiavassa, A.; Hocdé, V.; ...
2018, A&A, 616, 92
 
Mass and p-factor of the type II Cepheid OGLE-LMC-T2CEP-098 in a binary system
Bogumił Pilecki, W. Gieren, R. Smolec, G. Pietrzyński, I. B. Thompson, R. I. Anderson, G. Bono, I. Soszyński, P. Kervella, N. Nardetto, M. Taormina, K. Stępień, P. Wielgórski
2017, ApJ, 842, 110 - More information - Get data
 
Araucaria Project: Pulsating stars in binary systems and as distance indicators
Bogumił Pilecki, W. Gieren, G. Pietrzyński, R. Smolec
2017, EPJWC, 152, 7007

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