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Chemical Abundances for 25 JWST Exoplanet Host Stars with KeckSpec
- Publication Year :
- 2022
-
Abstract
- Using a data-driven machine learning tool we report $T_{\text{eff}}$, $\log{(g)}$, $v\sin{(i)}$, and elemental abundances for 15 elements (C, N, O, Na, Mg, Al, Si, Ca, Ti, V, Cr, Mn, Fe, Ni, Y) for a sample of 25 exoplanet host stars targeted by JWST's first year of observations. The chemical diversity of these stars show that, while a number of their companion planets may have formed in a disk with chemistry similar to Solar, some JWST targets likely experienced different disk compositions. This sample is part of a larger forthcoming catalog that will report homogeneous abundances of $\sim$4,500 FGK stars derived from Keck/HIRES spectra.<br />Comment: 3 pages. Submitted to Research Notes of the AAS
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2207.13662
- Document Type :
- Working Paper