Chemical composition of stars with massive planets
نویسندگان
چکیده
Stellar parameters of 25 planet-hosting stars and abundances Li, C, O, Na, Mg, Al, S, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Ni, Zn, Y, Zr, Ba, Ce, Pr, Nd, Sm Eu, were studied based on homogeneous high resolution spectra uniform techniques. The iron abundance [Fe/H] key elements (Li, Si) indicative the planet formation, as well dependencies [El/Fe] $T_{cond}$, analyzed. determined in our sample with detected massive planets range within -0.3<[Fe/H]<0.4. behaviour [C/Fe], [O/Fe], [Mg/Fe] [Si/Fe] relative to is consistent Galactic Chemical Evolution trends. mean values C/O [C/O] are = 0.48 +/-0.07 <[C/O]>=-0.07 +/-0.07, which slightly lower than solar ones. Mg/Si ratios from 0.83 0.95 for four 1.0 1.86 remaining 21 stars. Various slopes vs. Tcond found. planetary mass metallicity, lithium abundance, ratios, also [El/Fe]-Tcond considered.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2021
ISSN: ['0035-8711', '1365-8711', '1365-2966']
DOI: https://doi.org/10.1093/mnras/stab1171