Precise physical parameters of three late-type eclipsing binary giant stars in the Large Magellanic Cloud

被引：0

作者：

Garcia, G. Rojas ^{[1
]}

Graczyk, D. ^{[2
]}

Pietrzynski, G. ^{[1
]}

Galan, C. ^{[1
]}

Gieren, W. ^{[3
]}

Thompson, I. ^{[4
]}

Suchomska, K. ^{[1
]}

Kaluszynski, M. ^{[1
]}

Soszynski, I. ^{[5
]}

Udalski, A. ^{[5
]}

Karczmarek, P. ^{[3
]}

Narloch, W. ^{[1
]}

Gorski, M. ^{[1
]}

Wielgorski, P. ^{[1
]}

Zgirski, B. ^{[3
]}

Miller, N. ^{[6
]}

Hajdu, G. ^{[1
]}

Pilecki, B. ^{[1
]}

Taormina, M. ^{[1
]}

Lewis, M. ^{[7
]}

机构：

[1] Nicolaus Copernicus Astron Ctr, Bartycka 18, PL-00716 Warsaw, Poland

[2] Nicolaus Copernicus Astron Ctr, Rabianska 8, PL-87100 Torun, Poland

[3] Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile

[4] Carnegie Observ, 813 Santa Barbara St, Pasadena, CA 91101 USA

[5] Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland

[6] Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden

[7] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

来源：

ASTRONOMY & ASTROPHYSICS | 2024年 / 692卷

基金：

欧洲研究理事会;

关键词：

binaries: eclipsing; binaries: spectroscopic; stars: evolution; stars: fundamental parameters; stars: late-type; GRAVITATIONAL LENSING EXPERIMENT; CLUSTER AGES EXPERIMENT; STELLAR PARAMETERS; DISTANCE DETERMINATION; ECHELLE SPECTROGRAPH; RADIAL-VELOCITIES; MESA ISOCHRONES; SYSTEM; CALIBRATION; ACCURATE;

D O I：

10.1051/0004-6361/202451720

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：15

共 76 条

[1] The effective temperature scale of giant stars (F0-K5) -: II.: Empirical calibration of Teff versus colours and [Fe/H]
Alonso, A
Arribas, S
Martínez-Roger, C
[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 140 (03): : 261 - 277
[2] MIKE: A double echelle spectrograph for the Magellan Telescopes at Las Campanas Observatory.
Bernstein, RA
Shectman, SA
Gunnels, S
Mochnacki, S
Athey, A
[J]. INSTRUMENT DESIGN AND PERFORMANCE FOR OPTICAL/INFRARED GROUND-BASED TELESCOPES, PTS 1-3, 2003, 4841 : 1694 - 1704
[3] The first direct distance determination to a detached eclipsing binary in M33
Bonanos, A. Z.
Stanek, K. Z.
Kudritzki, R. P.
Macri, L. M.
Sasselov, D. D.
Kaluzny, J.
Stetson, P. B.
Bersier, D.
Bresolin, F.
Matheson, T.
Mochejska, B. J.
Przybilla, N.
Szentgyorgyi, A. H.
Tonry, J.
Torres, G.
[J]. ASTROPHYSICAL JOURNAL, 2006, 652 (01) : 313 - 322
[4] An absolutely calibrated Teff scale from the infrared flux method Dwarfs and subgiants
Casagrande, L.
Ramirez, I.
Melendez, J.
Bessell, M.
Asplund, M.
[J]. ASTRONOMY & ASTROPHYSICS, 2010, 512
[5] Dust distributions in the magellanic clouds
Chen, B-Q
Guo, H-L
Gao, J.
Yang, M.
Liu, Y-L
Jiang, B-W
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 511 (01) : 1317 - 1329
[6] MESA ISOCHRONES AND STELLAR TRACKS (MIST). I. SOLAR-SCALED MODELS
Choi, Jieun
Dotter, Aaron
Conroy, Charlie
Cantiello, Matteo
Paxton, Bill
Johnson, Benjamin D.
[J]. ASTROPHYSICAL JOURNAL, 2016, 823 (02)
[7] The VMC survey - XLIV: mapping metallicity trends in the large magellanic cloud using near-infrared passbands
Choudhury, Samyaday
de Grijs, Richard
Bekki, Kenji
Cioni, Maria-Rosa L.
Ivanov, Valentin D.
van Loon, Jacco Th
Miller, Amy E.
Niederhofer, Florian
Oliveira, Joana M.
Ripepi, Vincenzo
Sun, Ning-Chen
Subramanian, Smitha
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 507 (04) : 4752 - 4763
[8] The Dependence of Convective Core Overshooting on Stellar Mass: Reality Check and Additional Evidence
Claret, Antonio
Tones, Guillermo
[J]. ASTROPHYSICAL JOURNAL, 2019, 876 (02)
[9] A library of high resolution synthetic stellar spectra from 300 nm to 1.8 μm with solar and α-enhanced composition
Coelho, P
Barbuy, B
Meléndez, J
Schiavon, RP
Castilho, BV
[J]. ASTRONOMY & ASTROPHYSICS, 2005, 443 (02) : 735 - U183
[10] Cutri R. M., 2012, VizieR Online Data Catalog: II/281

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