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Precise physical parameters of three late-type eclipsing binary giant stars in the Large Magellanic Cloud
Indexado
WoS WOS:001369254600009
Scopus SCOPUS_ID:85211437419
DOI 10.1051/0004-6361/202451720
Año 2024
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Context. Detached eclipsing binaries (DEBs) allow for the possibility of a precise characterization of their stellar components. They offer a unique opportunity for deriving their physical parameters nearly independent of a model for a number of systems consisting of late-type giant stars. We aim to expand the sample of low-metallicity late-type giant stars with precisely determined parameters. Aims. We determine the fundamental parameters, such as the mass and radius, or the effective temperature for three long-period late-type eclipsing binaries from the Large Magellanic Cloud: OGLE-LMC-ECL-25304, OGLE-LMC-ECL-28283, and OGLE-IV LMC554.19.81. Subsequently, we determine the evolutionary stages of the systems. Methods. We fit the light curves from the OGLE project and radial velocity curves from high-resolution spectrographs using the Wilson-Devinney code. The spectral analysis was performed with the GSSP code and resulted in the determination of atmospheric parameters such as effective temperatures and metallicities. We used the isochrones provided by the MIST models based on the MESA code to derive the evolutionary status of the stars. Results. We present the first analysis of three DEBs composed of similar helium-burning late-type stars that pass through the blue loop. The estimated masses for OGLE-LMC-ECL-29293 (G4III + G4III) are M-1 = 2.898 +/- 0.031 and M-2 = 3.153 +/- 0.038 M-circle dot, and the stellar radii are R-1 = 19.43 +/- 0.31 and R-2 = 19.30 +/- 0.31 R-circle dot. OGLE-LMC-ECL-25304 (G4III + G5III) has stellar masses of M-1 = 3.267 +/- 0.028 and M-2 = 3.229 +/- 0.029 M-circle dot and radii of R-1 = 23.62 +/- 0.42 and R-2 = 25.10 +/- 0.43 R-circle dot. OGLE-IV LMC554.19.81 (G2III + G2III) has masses of M-1 = 3.165 +/- 0.020 and M-2 = 3.184 +/- 0.020 M-circle dot and radii of R-1 = 18.86 +/- 0.26 and R-2 = 19.64 +/- 0.26 R-circle dot. All masses were determined with a precision better than 2% and the precision for the radii is better than 1.5%. The ages of the stars are in the range of 270-341 Myr.

Revista



Revista ISSN
Astronomy & Astrophysics 0004-6361

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Rojas García, Gonzalo Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
2 Graczyk, Dariusz Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
3 Pietrzynski, Grzegorz Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
4 Galan, Cezary Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
5 Gieren, Wolfgang Hombre Universidad de Concepción - Chile
6 Thompson, Ian B. Hombre Carnegie Observ - Estados Unidos
Carnegie Observatories - Estados Unidos
7 Suchomska, K. Mujer Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
8 Kaluszynski, M. - Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
9 Soszynski, I. Hombre Univ Warsaw - Polonia
University of Warsaw - Polonia
10 Udalski, Andrzej Hombre Univ Warsaw - Polonia
University of Warsaw - Polonia
11 Karczmarek, Paulina Mujer Universidad de Concepción - Chile
12 Narloch, W. Mujer Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
13 Gorski, Marek Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
14 Wielgorski, Piotr Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
15 Zgirski, B. - Universidad de Concepción - Chile
16 Miller, N. - UPPSALA UNIV - Suecia
Uppsala Universitet - Suecia
17 Hajdu, G. Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
18 Pilecki, Bogumill Hombre Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
19 Taormina, M. Mujer Nicolaus Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia
20 Lewis, M. Mujer Leiden Univ - Países Bajos
Sterrewacht Leiden - Países Bajos

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Financiamiento



Fuente
Polish Ministry of Science and Higher Education
European Research Council
Narodowe Centrum Nauki
National Science Centre, Poland
Horizon 2020 Framework Programme
Fundacja na rzecz Nauki Polskiej
Foundation for Polish Science
National Science Centre, Poland (NCN)
Ministerstwo Edukacji i Nauki
Polish-French Marie Skłodowska-Curie and Pierre Curie Science Prize
Polish-French Marie Sklodowska-Curie
European Research Council (ERC) under the Horizon 2020 program

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Agradecimientos



Agradecimiento
The research leading to these results has received funding from the European Research Council (ERC) under the Horizon 2020 program (grant No. 951549 - UniverScale), the Polish Ministry of Science and Higher Education (grant 2024/WK/02), and the Polish-French Marie Sk & lstrok;odowska-Curie and Pierre Curie Science Prize from the Foundation for Polish Science. G.R.G. acknowledges the financial support of the National Science Centre, Poland (NCN) under the project No. 2017/26/A/ST9/00446. This work has been co-funded by the National Science Centre, Poland, grant No. 2022/45/B/ST9/00243.
The research leading to these results has received funding from the European Research Council (ERC) under the Horizon 2020 program (grant No. 951549 - UniverScale), the Polish Ministry of Science and Higher Education (grant 2024/WK/02), and the Polish-French Marie Sklodowska-Curie and Pierre Curie Science Prize from the Foundation for Polish Science. G.R.G. acknowledges the financial support of the National Science Centre, Poland (NCN) under the project No. 2017/26/A/ST9/00446. This work has been cofunded by the National Science Centre, Poland, grant No. 2022/45/B/ST9/00243.
The research leading to these results has received funding from the European Research Council (ERC) under the Horizon 2020 program (grant No. 951549 - UniverScale), the Polish Ministry of Science and Higher Education (grant 2024/WK/02), and the Polish-French Marie Sklodowska-Curie and Pierre Curie Science Prize from the Foundation for Polish Science. G.R.G. acknowledges the financial support of the National Science Centre, Poland (NCN) under the project No. 2017/26/A/ST9/00446. This work has been cofunded by the National Science Centre, Poland, grant No. 2022/45/B/ST9/00243.

Muestra la fuente de financiamiento declarada en la publicación.