{"paper":{"title":"Stellar and Planetary Characterization of the Ross 128 Exoplanetary System from APOGEE Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Barbara Rojas-Ayala, Cayman T. Unterborn, Cullen Blake, D. A. Garcia-Hernandez, Diogo Souto, Felipe Santana, Henrik Jonsson, J. A. Johnson, Johanna Teske, Katia Cunha, Keivan Stassun, Kevin Covey, Olga Zamora, Steven Gilhool, Steven R. Majewski, Thomas Masseron, Verne V. Smith","submitted_at":"2018-05-29T18:08:42Z","abstract_excerpt":"The first detailed chemical abundance analysis of the M dwarf (M4.0) exoplanet-hosting star Ross 128 is presented here, based upon near-infrared (1.5--1.7 \\micron) high-resolution ($R$$\\sim$22,500) spectra from the SDSS-APOGEE survey. We determined precise atmospheric parameters $T_{\\rm eff}$=3231$\\pm$100K, log$g$=4.96$\\pm$0.11 dex and chemical abundances of eight elements (C, O, Mg, Al, K, Ca, Ti, and Fe), finding Ross 128 to have near solar metallicity ([Fe/H] = +0.03$\\pm$0.09 dex). The derived results were obtained via spectral synthesis (1-D LTE) adopting both MARCS and PHOENIX model atmos"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11633","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}