Planet Hunters TESS. V. A Planetary System Around a Binary Star, Including a Mini-Neptune in the Habitable Zone

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

We would like to thank all of the planet hunters who have taken part in the Planet Hunters TESS citizen science project over the past six years. Without all of their dedicated work, many of whom have been part of the project ab initio, this exciting system would not have been found.

We acknowledge the use of public TESS data from pipelines at the TESS Science Office and at 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.

We thank the Observatoire de Haute-Provence (CNRS) staff for its support. This work was supported by the "Programme National de Planétologie" (PNP) of CNRS/INSU." Some of the observations in this paper made use of the high-resolution imaging instrument 'Alopeke and were obtained under Gemini LLP Proposal Number: GN/S-2021A-LP-105. Alopeke was funded by the NASA Exoplanet Exploration Program and built at the NASA Ames Research Center by Steve B. Howell, Nic Scott, Elliott P. Horch, and Emmett Quigley. 'Alopeke was mounted on the Gemini North telescope of the international Gemini Observatory, a program of NSF's OIR Lab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. on behalf of the Gemini partnership: the National Science Foundation (United States), National Research Council (Canada), Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Ciencia, Tecnología e Innovación (Argentina), Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brazil), and Korea Astronomy and Space Science Institute (Republic of Korea).

N.E. thanks the LSSTC Data Science Fellowship Program, which is funded by LSSTC, NSF Cybertraining grant number 1829740, the Brinson Foundation, and the Moore Foundation. C.A.C. acknowledges that this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). N.S. acknowledges support from the National Science Foundation through the Graduate Research Fellowship Program under grant 1842402. J.V.Z. acknowledges support from the Future Investigators in NASA Earth and Space Science and Technology (FINESST) grant 80NSSC22K1606. J.M.A.M. acknowledges support from the National Science Foundation Graduate Research Fellowship Program under grant number DGE-1842400 and from NASA's Interdisciplinary Consortia for Astrobiology Research (NNH19ZDA001N-ICAR) under award number 19-ICAR19_2-0041. Xavier Delfosse acknowledges support by the French National Research Agency in the framework of the Investissements d'Avenir program (ANR-15-IDEX-02), through the funding of the "Origin of Life" project of the Grenoble-Alpes University. F.K. acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (COBREX; grant agreement number 885593), and from the Initiative de Recherches Interdisciplinaires et Stratégiques (IRIS) of Université PSL "Origines et Conditions d'Apparition de la Vie (OCAV)". E.M. acknowledges funding from FAPEMIG under project number APQ-02493-22 and a research productivity grant number 309829/2022-4 awarded by the CNPq, Brazil. CJ gratefully acknowledges support from the Netherlands Research School of Astronomy (NOVA) and from the Research Foundation Flanders (FWO) under grant agreement G0A2917N (BlackGEM).

Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). The Space Telescope Science Institute (STScI) is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts. This paper includes data collected with the TESS mission, obtained from the MAST data archive at STScI. Funding for the TESS mission is provided by the NASA Explorer Program. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.

Finally, N.E. and S.G. wish to thank the Harry Potter franchise for providing us with the in-house nickname for this system of Percival, inspired by Albus Percival Wulfric Brian Dumbledore's wisdom.

Data Availability

The TESS data used within this article are hosted and made publicly available by the Mikulski Archive for Space Telescopes (MAST, http://archive.stsci.edu/tess/). All the TESS data used in this paper can be found in MAST:10.17909/pepe-f853. This work also used data from the NASA Exoplanet Archive (NASA Exoplanet Archive 2019), and ExoFOP (ExoFOP 2019).

Code Availability

This work made use of Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration et al. 2013), matplotlib (Hunter 2007), pandas (McKinney et al. 2010), NumPy (Walt 2011), astroquery (Ginsburg et al. 2019), sklearn (Pedregosa et al. 2011), emcee (Foreman-Mackey et al. 2013), ptemcee (Vousden et al. 2016), triceratops (Giacalone et al. 2021), latte (Eisner et al. 2020a), lightkurve (Lightkurve Collaboration et al. 2018), pyaneti (Barragán et al. 2022a), orbitize! (Blunt et al. 2020), Mercury (Chambers 1999), corner (Foreman-Mackey 2016).

Facilities

TESS - , OHP/SOPHIE - , Gemini North/'Alopeke - , Keck/HIRES - , Palomar/PHARO - , WIYN/NESSI - , Keck II/NIRC2 -