Detalles de publicación
PP 024105
A sub-Earth-mass planet orbiting Barnard's star: No evidence of transits in TESS photometry
(1) Instituto de Astrofísica de Canarias, 38205 La Laguna, Spain
(2) Departamento de Astrofísica, Universidad de La Laguna, 38206 La La-
guna, Spain
(3) Light Bridges S. L., 35004 Las Palmas de Gran Canaria, Spain
(4) Consejo Superior de Investigaciones Científicas (CSIC), 28006
Madrid, Spain
(5) INAF - Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025
Pino Torinese, Italy
(6) Centro de Astrobiología (CAB), CSIC-INTA, ESAC campus, Camino
Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Spain
(7) Instituto de Astrofísica e Ciências do Espaço, CAUP, Universidade do
Porto, Rua das Estrelas, 4150-762 Porto, Portugal
(8) Departamento de Física e Astronomia, Faculdade de Ciências, Univer-
sidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
(9) Instituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências
da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
(10) Centro de Astrofísica da Universidade do Porto, Rua das Estrelas,
4150-762 Porto, Portugal
A sub-Earth-mass planet orbiting Barnard's star, designated as Barnard b, has been recently announced. At a similar 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$\sigma$ upper bound of 87.9 degrees for the orbital inclination of Barnard b.