@misc{10481/64651,
year = {2020},
month = {10},
url = {http://hdl.handle.net/10481/64651},
abstract = {We report the discovery and characterisation of a super-Earth and a sub-Neptune transiting the bright (K = 8:8), quiet, and nearby (37 pc) M3V dwarf TOI-1266. We validate the planetary nature of TOI-1266 b and c using four sectors of TESS photometry and data from the newly-commissioned 1-m SAINT-EX telescope located in San Pedro Mártir (México). We also include additional groundbased follow-up photometry as well as high-resolution spectroscopy and high-angular imaging observations. The inner, larger planet has a radius of R = 2:37+0:16 -0:12 R and an orbital period of 10.9 days. The outer, smaller planet has a radius of R = 1:56+0:15 -0:13 R on an 18.8-day orbit. The data are found to be consistent with circular, co-planar and stable orbits that are weakly influenced by the 2:1 mean motion resonance. Our TTV analysis of the combined dataset enables model-independent constraints on the masses and eccentricities of the planets. We find planetary masses of Mp = 13:5+11:0 -9:0 M (<36:8 M at 2- ) for TOI-1266 b and 2:2+2:0 -1:5 M (<5:7 M at 2- ) for TOI-1266 c. We find small but non-zero orbital eccentricities of 0:09+0:06 -0:05 (<0:21 at 2- ) for TOI-1266 b and 0:04 0:03 (<0:10 at 2- ) for TOI-1266 c. The equilibrium temperatures of both planets are of 413 20 and 344 16 K, respectively, assuming a null Bond albedo and uniform heat redistribution from the day-side to the night-side hemisphere. The host brightness and negligible activity combined with the planetary system architecture and favourable planet-to-star radii ratios makes TOI-1266 an exquisite system for a detailed characterisation.},
organization = {Embassy of Mexico in Bern},
organization = {Swiss National Science Foundation (SNSF)},
organization = {Programa de Apoyo a Proyectos de Investigacion e Innovacion Tecnologica (PAPIIT)

Universidad Nacional Autonoma de Mexico

IN-107518},
organization = {DGAPA},
organization = {Australian Research Council},
organization = {Fonds de la Recherche Scientifique - FNRS

FRFC 2.5.594.09},
organization = {Swiss National Science Fundation (SNF) - University of Liege},
organization = {Spanish public funds for research 	
ESP2017-87676-2-2
RYC-2012-09913},
organization = {Spanish Government},
organization = {National Aeronautics & Space Administration (NASA)},
organization = {NASA High-End Computing (HEC) Program through the NASA},
organization = {Baja California, Mexico - Spanish State Research Agency (AEI) 	
MDM-2017-0737},
organization = {Unidad de Excelencia "Maria de Maeztu"- Centro de Astrobiologia (INTA-CSIC)},
organization = {Junta de Andalucía},
organization = {European Research Council (ERC)

336480},
organization = {Alfred P. Sloan Foundation},
organization = {National Aeronautics & Space Administration (NASA)

80NSSC18K1585
80NSSC19K0379},
organization = {National Science Foundation (NSF)

AST-1717000},
organization = {Antoine de Saint-Exupery Youth Foundation},
publisher = {Edp Sciencies SA},
keywords = {Instrumentation: detectors},
keywords = {Planets and satellites: detection},
title = {A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266},
doi = {10.1051/0004-6361/202038616},
author = {Demory, B.O. and Suárez Yanes, Juan Carlos},
}