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Showing papers by "M. Kubiak published in 2019"

Journal Article•DOI•
Candidates for non-pulsating stars located in the Cepheid instability strip in the Large Magellanic Cloud based on Strömgren photometry

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W. Narloch1, W. Narloch2, W. Narloch3, Grzegorz Pietrzyński3, Grzegorz Pietrzyński1, Z. Kolaczkowski3, Radosław Smolec3, M. Gorski1, M. Gorski2, M. Kubiak4, Andrzej Udalski4, Igor Soszyński4, Dariusz Graczyk1, Dariusz Graczyk2, Dariusz Graczyk3, Wolfgang Gieren1, Wolfgang Gieren2, Paulina Karczmarek4, Bartłomiej Zgirski3, Piotr Wielgórski3, Ksenia Suchomska4, B. Pilecki3, M. Taormina3, M. Kałuszyński3 •
University of Concepción1, Millennium Institute2, Polish Academy of Sciences3, University of Warsaw4
01 Nov 2019-Monthly Notices of the Royal Astronomical Society
TL;DR: In this article, the authors presented candidates for non-pulsating stars lying in the classical Cepheid instability strip based on OGLE photometric maps combined with Stromgren photometry obtained with the 4.1m SOAR telescope, and Gaia DR2 data in four fields in the Large Magellanic Cloud.
Abstract: We present candidates for non-pulsating stars lying in the classical Cepheid instability strip based on OGLE photometric maps combined with Stromgren photometry obtained with the 4.1-m SOAR telescope, and Gaia DR2 data in four fields in the Large Magellanic Cloud. We selected 19 candidates in total. After analysis of their light curves from OGLE surveys we found that all these stars appear to be photometrically stable at the level of a few mmag. Our results show that non-pulsating stars might constitute to about 21%-30% of the whole sample of giant stars located in the classical instability strip. Furthermore, we identified potential candidates for classical Cepheids with hot companions based on their Stromgren colours.

5 citations