SWEET-Cat: A view on the planetary mass-radius relation

被引：0

作者：

Sousa, S.G. ^{[1
]}

Adibekyan, V. ^{[1
]}

Delgado-Mena, E. ^{[1
]}

Santos, N.C. ^{[1
,2
]}

Rojas-Ayala, B. ^{[3
]}

Barros, S.C.C. ^{[1
]}

Demangeon, O.D.S. ^{[1
,2
]}

Hoyer, S. ^{[4
]}

Israelian, G. ^{[5
]}

Mortier, A. ^{[6
]}

Soares, B.M.T.B. ^{[1
,2
]}

Tsantaki, M. ^{[7
]}

机构：

[1] Instituto de Astrofísica e Ciências Do Espaço, Universidade Do Porto, CAUP, Rua das Estrelas, Porto,4150-762, Portugal

[2] Departamento de Física e Astronomia, Faculdade de Ciências, Universidade Do Porto, Rua do Campo Alegre, Porto,4169-007, Portugal

[3] Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica, Chile

[4] Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France

[5] Instituto de Astrofísica de Canarias, Tenerife, La Laguna,38200, Spain

[6] School of Physics & Astronomy, University of Birmingham, Birmingham, Edgbaston,B15 2TT, United Kingdom

[7] INAF - Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, Firenze,50125, Italy

来源：

Astronomy and Astrophysics | 1600年 / 691卷

关键词：

Aims. SWEET-Cat (Stars With ExoplanETs Catalog) was originally introduced in 2013; and since then; the number of confirmed exoplanets has increased significantly. A crucial step for a comprehensive understanding of these new worlds is the precise and homogeneous characterization of their host stars. Methods. We used a large number of high-resolution spectra to continue the addition of new stellar parameters for planet-hosting stars in SWEET-Cat following the new detection of exoplanets listed both in the Extrasolar Planets Encyclopedia and in the NASA exoplanet archive. We obtained high-resolution spectra for a significant number of these planet-hosting stars; either observed by our team or collected through public archives. For FGK stars; the spectroscopic stellar parameters were derived for the spectra following the same homogeneous process using ARES+MOOG as for the previous SWEET-Cat releases. The stellar properties were combined with the planet properties to study possible correlations that could shed more light on the star-planet connection studies. Results. We have increased the number of stars with homogeneous parameters by 232 (∼25% - from 959 to 1191). We focus on the exoplanets that have had both mass and radius determined to review the mass-radius relation; and we find results consistent with the ones previously reported in the literature. For the massive planets; we also revisit the radius anomaly; confirming a metallicity correlation for the radius anomaly already hinted at in previous results. © The Authors 2024;

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