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Discovery and characterisation of two Neptune-mass planets orbiting HD 212729 with TESS
David J. Armstrong, Ares Osborn, Vardan Adibekyan +33
We report the discovery of two exoplanets orbiting around HD 212729 (TOI\,1052, TIC 317060587), a K star with V=9.51 observed by TESS in Sectors 1 and 13. One exo…
TESS and CHEOPS Discover Two Warm Sub-Neptunes Transiting the Bright K-dwarf HD 15906
Amy Tuson, Didier Queloz, Hugh P. Osborn +119
We report the discovery of two warm sub-Neptunes transiting the bright (G = 9.5 mag) K-dwarf HD 15906 (TOI 461, TIC 4646810). This star was observed by the Transiting Exoplanet Sur…
A super-Earth and a mini-Neptune near the 2:1 MMR straddling the radius valley around the nearby mid-M dwarf TOI-2096
F. J. Pozuelos, M. Timmermans, B. V. Rackham +72
Several planetary formation models have been proposed to explain the observed abundance and variety of compositions of super-Earths and mini-Neptunes. In this context, multitransit…
HIP 33609 b: An Eccentric Brown Dwarf Transiting a V=7.3 Rapidly Rotating B-Star
Noah Vowell, Joseph E. Rodriguez, Samuel N. Quinn +41
We present the discovery and characterization of HIP 33609 b, a transiting warm brown dwarf orbiting a late B star, discovered by NASA's Transiting Exoplanet Survey Satellite TESS…
Characterization of a set of small planets with TESS and CHEOPS and an analysis of photometric performance
Dominic Oddo, Diana Dragomir, Alexis Brandeker +41
The radius valley carries implications for how the atmospheres of small planets form and evolve, but this feature is visible only with highly precise characterizations of many smal…
TOI-1075 b: A Dense, Massive, Ultra-Short Period Hot Super-Earth Straddling the Radius Gap
Zahra Essack, Avi Shporer, Jennifer A. Burt +29
Populating the exoplanet mass-radius diagram in order to identify the underlying relationship that governs planet composition is driving an interdisciplinary effort within the exop…