@article{ec0dea35ec094acabb8a5f1c5ea10b74,
title = "Absolute dimensions of solar-type eclipsing binaries: NY Hya: a test for magnetic stellar evolution models",
abstract = "The binary star NY Hya is a bright, detached, double-lined eclipsing system with an orbital period of just under five days with two components each nearly identical to the Sun and located in the solar neighbourhood. The objective of this study is to test and confront various stellar evolution models for solar-type stars based on accurate measurements of stellar mass and radius. We present new ground-based spectroscopic and photometric as well as high-precision space-based photometric and astrometric data from which we derive orbital as well as physical properties of the components via the method of least-squares minimisation based on a standard binary model valid for two detached components. Classic statistical techniques were invoked to test the significance of model parameters. Additional empirical evidence was compiled from the public domain; the derived system properties were compared with archival broad-band photometry data enabling a measurement of the system's spectral energy distribution that allowed an independent estimate of stellar properties. We also utilised semi-empirical calibration methods to derive atmospheric properties from Str\{"}{o}mgren photometry and related colour indices. Data was used to confront the observed physical properties with classic and magnetic stellar evolution models.",
keywords = "Binaries: eclipsing, Binaries: spectroscopic, Stars: fundamental parameters, Stars: individual: HD80747, Stars: solar-type",
author = "Hinse, {T. C.} and O. Ba{\c s}t{\"u}rk and J. Southworth and Feiden, {G. A.} and J. Tregloan-Reed and Kostov, {V. B.} and J. Livingston and Esmer, {E. M.} and Mesut Yılmaz and Sel{\c c}uk Yal{\c c}ınkaya and {\c S}eyma Torun and J. Vos and Evans, {D. F.} and Morales, {J. C.} and Wolf, {J. C. A.} and Olsen, {E. H.} and Clausen, {J. V.} and Helt, {B. E.} and L{\'y}, {C. T. K.} and O. Stahl and R. Wells and M. Herath and J{\o}rgensen, {U. G.} and M. Dominik and J. Skottfelt and N. Peixinho and P. Longa-Pe{\~n}a and Y. Kim and Kim, {H. -E.} and Yoon, {T. S.} and Alrebdi, {H. I.} and Zotos, {E. E.}",
note = "Funding: Europlanet 2024 RI has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreement No. 871149. N.P.{\textquoteright}s work was supported by Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT) through the research grants UIDB/04434/2020 and UIDP/04434/2020. U.G.J. acknowledges funding from the Novo Nordisk Foundation Interdisciplinary Synergy Programme grant no. NNF19OC0057374 and from the European Union H2020-MSCA-ITN-2019 under Grant no. 860470 (CHAMELEON). J.V. acknowledges support from the Grant Agency of the Czech Republic (GACR 22-34467S). J.C.M. acknowledges financial support by Spanish grants PID2021-125627OBC31 funded by MCIU/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”, PGC2018-098153-B-C33 funded by MCIU/AEI, by the programme Unidad de Excelencia Mar{\'i}a de Maeztu CEX2020-001058-M, and by the Generalitat de Catalunya/CERCA programme. P.L.P. was partly funded by Programa de Iniciaci{\'o}n en Investigaci{\'o}n-Universidad de Antofagasta. INI-17-03.",
year = "2024",
month = jul,
day = "2",
doi = "10.1051/0004-6361/202244066",
language = "English",
volume = "687",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "EDP SCIENCES S A",
}