A sub-Earth-mass planet orbiting Barnard’s star
A sub-Earth-mass planet orbiting Barnard’s star, designated as Barnard b, has recently been announced. At almost the same time, the first photometric data of Barnard’s star by the Transit Exoplanet Survey Satellite (TESS) was released in Sector 80. We explore the possibility of emergent transits of Barnard b in TESS photometry. The detrended 2 min light curve appears to be flat, with a flux root mean square of 0.411 parts per thousand. Attempts of blind and informed transit curve model inference suggest no evidence of transiting Barnard b, or any other body. This provides a 3 σ upper bound of 87.9 degrees for the orbital inclination of Barnard b.
Authors
- N. Nari (ORCID: https://orcid.org/0009-0001-2825-6185)
- M. R. Zapatero Osorio (ORCID: https://orcid.org/0000-0001-5664-2852)
- C. J. A. P. Martins (ORCID: https://orcid.org/0000-0002-4886-9261)
- A. Suárez Mascareño (ORCID: https://orcid.org/0000-0002-3814-5323)
- M. Damasso (ORCID: https://orcid.org/0000-0001-9984-4278)
- A. Castro-González (ORCID: https://orcid.org/0000-0001-7439-3618)
- R. Rébolo (ORCID: https://orcid.org/0000-0003-3767-7085)
- A. K. Stefanov (ORCID: https://orcid.org/0000-0002-6059-1178)
- J. I. Gónzalez Hernández (ORCID: https://orcid.org/0000-0002-0264-7356)
- Ana Maria Silva (ORCID: https://orcid.org/0000-0003-2002-4774)
- Carlos Allende Prieto (ORCID: https://orcid.org/0000-0002-0084-572X)
Institutions
- Universidad de Las Palmas de Gran Canaria (ES)
- Consejo Superior de Investigaciones Científicas (ES)
- University of Lisbon (PT)
- Universidad de La Laguna (ES)
- Universidade do Porto (PT)
- Institute of Astrophysics and Space Sciences (PT)
- Osservatorio Astrofisico di Torino (IT)
- Centro de Astrofísica da Universidade do Porto (PT)
- Centro de Astrobiología (ES)
- Instituto de Astrofísica de Canarias (ES)
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2024-12-03
- DOI
- https://doi.org/10.1051/0004-6361/202452450
- Citations
- 2
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 0.66
Funders
- National Aeronautics and Space Administration
- California Institute of Technology
- “la Caixa” Foundation
- Ministerio de Ciencia, Innovación y Universidades
- European Commission
- Ministerio de Ciencia e Innovación
- Agencia Canaria de Investigación, Innovación y Sociedad de la Información
- Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona
- Instituto de Astrofísica de Canarias
- Ames Research Center
- Science Mission Directorate
- European Research Council
- Fundação para a Ciência e a Tecnologia
- Agencia Estatal de Investigación