The Araucaria Project. Binary Classical Cepheids in the LMC
D. Graczyk, B. Pilecki, G. Pietrzy\'nski, W. Gieren, P. Konorski, I., Soszy\'nski, A. Udalski, A. Gallenne
TL;DR
This paper reports on the identification and confirmation of binary classical Cepheid systems in the Large Magellanic Cloud, including detailed follow-up observations of specific eclipsing binaries and new candidate systems.
Contribution
It provides the first confirmation of a third eclipsing binary Cepheid in the LMC and discusses additional candidate systems, advancing understanding of Cepheid binarity.
Findings
Confirmed OGLE-LMC-CEP-2532 as a true eclipsing binary Cepheid.
Presented follow-up results for OGLE-LMC-CEP-0227 and OGLE-LMC-CEP-1812.
Identified two new candidate eclipsing binary Cepheids.
Abstract
The status of our work on binary classical cepheid systems in the Large Magellanic Cloud is presented. We report on results from our follow up of two eclipsing binary cepheids OGLE-LMC-CEP-0227 and OGLE-LMC-CEP-1812. Here we presented for the first time confirmation that a third cepheid OGLE-LMC-CEP-2532 is a true eclipsing binary cepheid with a period of 800 days. Two other very good candidates for eclipsing binaries detected during OGLE-IV survey are also discussed.
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