{"paper":{"title":"A Mini-Neptune Orbiting the Metal-poor K Dwarf BD+29 2654","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Akihiko Fukui, Alexander A. Belinski, Alex S. Polanski, Amadeo Castro-Gonz\\'alez, Andrew W. Boyle, Andrew W. Howard, Arjun B. Savel, Ashley Chontos, Avi Shporer, Benjamin Fulton, Christopher J. Burke, Coel Hellier, Corey Beard, Courtney Dressing, Daniel Huber, Daria Pidhorodetska, David R. Ciardi, David R. Rodriguez, Douglas A. Caldwell, Enric Pall\\'e, Erik A. Petigura, Fei Dai, Felipe Murgas, George R. Ricker, Henrique Reggiani, Holden Gill, Howard Isaacson, Ian Crossfield, Jack Lubin, Jon M. Jenkins, Jorge Lillo-Box, Joseph M. Akana Murphy, Joshua N. Winn, Judah Van Zandt, Keivan G. Stassun, Kevin C. Schlaufman, Lauren M. Weiss, Luke Bouma, Natalia M. Guerrero, Natalie M. Batalha, Norio Narita, Paul Robertson, Rae Holcomb, Roland Vanderspek, Ryan A. Rubenzahl, Sara Seager, Stephanie Striegel, Stephen R. Kane, Steve B. Howell, Steven Giacalone, Tansu Daylan","submitted_at":"2023-06-13T23:59:01Z","abstract_excerpt":"We report the discovery and Doppler mass measurement of a 7.4-day 2.3-$R_\\oplus$ mini-Neptune around a metal-poor K dwarf BD+29 2654 (TOI-2018). Based on a high-resolution Keck/HIRES spectrum, the Gaia parallax, and multi-wavelength photometry from the ultraviolet to the mid-infrared, we found that the host star has $T_{\\text{eff}}=4174^{+34}_{-42}$ K, $\\log{g}=4.62^{+0.02}_{-0.03}$, $[\\text{Fe/H}]=-0.58\\pm0.18$, $M_{\\ast}=0.57\\pm0.02~M_{\\odot}$, and $R_{\\ast}=0.62\\pm0.01~R_{\\odot}$. Precise Doppler measurements with Keck/HIRES revealed a planetary mass of $M_{\\text{p}}=9.2\\pm2.1~M_{\\oplus}$ f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.08179","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2306.08179/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}