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Chemical Abundances for 25 JWST Exoplanet Host Stars with KeckSpec

Polanski, Alex S. and Crossfield, Ian J. M. and Howard, Andrew W. and Isaacson, Howard and Rice, Malena (2022) Chemical Abundances for 25 JWST Exoplanet Host Stars with KeckSpec. Research Notes of the AAS, 6 (8). Art. No. 155. ISSN 2515-5172. doi:10.3847/2515-5172/ac8676.

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Using a data-driven machine learning tool we report T_(eff), log(g), vsin(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 ∼4,500 FGK stars derived from Keck/HIRES spectra.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Polanski, Alex S.0000-0001-7047-8681
Crossfield, Ian J. M.0000-0002-1835-1891
Howard, Andrew W.0000-0001-8638-0320
Isaacson, Howard0000-0002-0531-1073
Rice, Malena0000-0002-7670-670X
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received July 2022. Revised August 2022. Accepted August 2022. Published August 2022.
Group:Astronomy Department
Subject Keywords:Chemical abundances; High resolution spectroscopy; Exoplanet astronomy; Exoplanet atmospheric composition; Astrometric exoplanet detection
Issue or Number:8
Record Number:CaltechAUTHORS:20220810-402964000
Persistent URL:
Official Citation:Alex S. Polanski et al 2022 Res. Notes AAS 6 155
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:116226
Deposited By: George Porter
Deposited On:12 Aug 2022 02:09
Last Modified:12 Aug 2022 02:09

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