TESS Hunt for Young and Maturing Exoplanets (THYME). XI. An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400 Myr Ursa Major Moving Group

Copyright and License

© 2024. 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.

Acknowledgement

The authors would like to acknowledge helpful discussions with Richard Townsend, Anne Noer Kolborg, and Lisa Kaltenegger. M.S.F. gratefully acknowledges the generous support provided by NASA through Hubble Fellowship grant HST-HF2-51493.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, In., for NASA, under the contract NAS 5-26555. R.Y. is grateful for support from a Doctoral Fellowship from the University of California Institute for Mexico and the United States (UCMEXUS) and CONACyT, a Texas Advanced Computing Center (TACC) Frontera Computational Science Fellowship, and a NASA FINESST award (21-ASTRO21-0068). A.W.M. was supported by grants from the NSF CAREER program (AST-2143763) and NASA's Exoplanets Research Program (XRP 80NSSC21K0393).

A portion of this work was performed at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-2210452. This paper includes data collected by the TESS mission, which are publicly available from the Mikulski Archive for Space Telescopes (MAST). Funding for the TESS mission is provided by NASA's Science Mission Directorate. This research has made use of the Exoplanet Follow-up Observation Program (ExoFOP; NExScI 2022) website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This work has made use of data from the European Space Agency (ESA) mission Gaia, ⁴⁴ processed by the Gaia Data Processing and Analysis Consortium (DPAC). ⁴⁵ This research has made use of the VizieR catalog access tool, the Centre de Données astronomiques de Strasbough (CDS) (DOI : 10.26093/cds/vizier). The original description of the VizieR service was published in Astronomy and Astrophysics Supplement Series (A&AS) 143, 23. We acknowledge the use of public TESS Objects of Interest (TOI) release data from pipelines at the TESS Science Office and the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work makes use of observations from the LCOGT network. Part of the LCOGT telescope time was granted by NOIRLab through the Mid-Scale Innovations Program (MSIP). MSIP is funded by NSF. Funding for the TESS mission is provided by NASA's Science Mission Directorate. K.A.C. and S.N.Q. acknowledge support from the TESS mission via subaward s3449 from MIT. The research shown here acknowledges the use of the Hypatia Catalog Database, an online compilation of stellar abundance data as described in Hinkel et al. (2014), which was supported by NASA's Nexus for Exoplanet System Science (NExSS) research coordination network and the Vanderbilt Initiative in Data-Intensive Astrophysics (VIDA). Z.L.D. would like to acknowledge the support of the MIT Presidential Fellowship and the MIT Collamore-Rogers Fellowship. Z.L.D. would like to acknowledge that this material is based upon work supported by the National Science Foundation Graduate Research Fellowship under grant No. 1745302.

Facilities

TESS - , Gaia DR3 - (Gaia Collaboration et al. 2021), Mikulski Archive for Space Telescopes (Marston et al. 2018), ROSAT, WISE, LCOGT 1 m (Sinistro), LCOGT 1 m (NRES), SMARTS 1.5 m (CHIRON), TRES, SOAR (Goodman), Telescopio Nazionale Galileo (HARPS-N), OHP 1.93 m (ELODIE), OHP 1.93 m (SOPHIE), Shane 3 m (Hamilton)

Software References

AstroImageJ (Collins et al. 2017), astroquery (Ginsburg et al. 2019), BANZAI (McCully et al. 2018), batman (Kreidberg 2015), corner.py (Foreman-Mackey 2016), edmcmc (Vanderburg 2021), Lightkurve (Lightkurve Collaboration et al. 1812), matplotlib (Hunter 2007), PARSEC (Bressan et al. 2012), PyAstronomy (Czesla et al. 2019), starrotate (Angus & Garcia Soto 2023), TAPIR (Jensen 2013), TESSCUT (Brasseur et al. 2019)