SIMBAD references

2020A&A...642A..49D - Astronomy and Astrophysics, volume 642A, 49-49 (2020/10-1)

A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266.

DEMORY B.-O., POZUELOS F.J., GOMEZ MAQUEO CHEW Y., SABIN L., PETRUCCI R., SCHROFFENEGGER U., GRIMM S.L., SESTOVIC M., GILLON M., McCORMAC J., BARKAOUI K., BENZ W., BIERYLA A., BOUCHY F., BURDANOV A., COLLINS K.A., DE WIT J., DRESSING C.D., GARCIA L.J., GIACALONE S., GUERRA P., HALDEMANN J., HENG K., JEHIN E., JOFRE E., KANE S.R., LILLO-BOX J., MAIGNE V., MORDASINI C., MORRIS B.M., NIRAULA P., QUELOZ D., RACKHAM B.V., SAVEL A.B., SOUBKIOU A., SRDOC G., STASSUN K.G., TRIAUD A.H.M.J., ZAMBELLI R., RICKER G., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., CALVARIO-VELASQUEZ T., FRANCO HERRERA J.A., COLORADO E., CADENA ZEPEDA E.O., FIGUEROA L., WATSON A.M., LUGO-IBARRA E.E., CARIGI L., GUISA G., HERRERA J., SIERRA DIAZ G., SUAREZ J.C., BARRADO D., BATALHA N.M., BENKHALDOUN Z., CHONTOS A., DAI F., ESSACK Z., GHACHOUI M., HUANG C.X., HUBER D., ISAACSON H., LISSAUER J.J., MORALES-CALDERON M., ROBERTSON P., ROY A., TWICKEN J.D., VANDERBURG A. and WEISS L.M.

Abstract (from CDS):

We report the discovery and characterisation of a super-Earth and a sub-Neptune transiting the bright (K=8.8), quiet, and nearby (37pc) 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 Martir (Mexico). We also include additional ground-based follow-up photometry as well as high-resolution spectroscopy and high-angular imaging observations. The inner, larger planet has a radius of R=2.37–0.12+0.16R and an orbital period of 10.9 days. The outer, smaller planet has a radius of R=1.56–0.13+0.15R 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=13.5–9.0+11.0M (<36.8M at 2-σ) for TOI-1266 b and 2.2–1.5+2.0M (<5.7M at 2-σ) for TOI-1266 c. We find small but non-zero orbital eccentricities of 0.09–0.05+0.06 (<0.21 at 2-σ) for TOI-1266 b and 0.04±0.03 (<0.10 at 2-σ) for TOI-1266 c. The equilibrium temperatures of both planets are of 413±20 and 344±16K, 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.

Abstract Copyright: © ESO 2020

Journal keyword(s): instrumentation: detectors - planets and satellites: detection

Simbad objects: 56

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2021.06.12-18:35:19

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