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 3σ upper bound of 87.9 degrees for the orbital inclination of Barnard b.
Publication Details
- Journal
- Springer Link (Chiba Institute of Technology)
- Published
- 2024-12-23
- DOI
- https://doi.org/10.1051/0004-6361/202452450/pdf
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Aeronautics and Space Administration
- California Institute of Technology
- European Commission
- Ministerio de Ciencia e Innovación
- Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona
- Instituto de Astrofísica de Canarias
- Ames Research Center
- Science Mission Directorate
- Fundação para a Ciência e a Tecnologia
- Agencia Estatal de Investigación