A sub-Earth-mass planet orbiting Barnard's star: No evidence of transits in TESS photometry

Bibcode
2025A&A...693L...3S
DOI
10.1051/0004-6361/202452450
Stefanov, A. K.; González Hernández, J. I.; Suárez Mascareño, A.; Nari, N.; Rebolo, R.; Damasso, M.; Castro-González, A.; Zapatero Osorio, M. -R.; Allende Prieto, C.; Silva, A. M.; Martins, C. J. A. P.
Referencia bibliográfica

Astronomy and Astrophysics

Fecha de publicación:
1
2025
Revista
Astronomy and Astrophysics
Número de autores
11
Número de autores del IAC
6
Número de citas
0
Número de citas referidas
0
Descripción
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.
Tipo
Con árbitro
Técnicas

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