Search Publications
Characterization of a Set of Small Planets with TESS and CHEOPS and an Analysis of Photometric Performance
Torres, Guillermo; Bieryla, Allyson; Stassun, Keivan G. +41 more
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 small planets. We present the characterization of nine planets and one planet candidate with both NASA TESS and ESA CHEOPS observations, which adds to the overall population…
A Mini-Neptune from TESS and CHEOPS Around the 120 Myr Old AB Dor Member HIP 94235
Latham, David W.; Quinn, Samuel N.; Kane, Stephen R. +36 more
The Transiting Exoplanet Survey Satellite (TESS) mission has enabled discoveries of the brightest transiting planet systems around young stars. These systems are the benchmarks for testing theories of planetary evolution. We report the discovery of a mini-Neptune transiting a bright star in the AB Doradus moving group. HIP 94235 (TOI-4399, TIC 464…
A CHEOPS Search for Massive, Long-period Companions to the Warm Jupiter K2-139 b
Smith, Alexis M. S.; Csizmadia, Szilárd
K2-139 b is a warm Jupiter with an orbital period of 28.4 days, but only three transits of this system have previously been observed-in the long-cadence mode of K2-limiting the precision with which the orbital period can be determined and future transits predicted. We report photometric observations of four transits of K2-139 b with ESA's CHaracte…
TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data
Kostov, Veselin B.; Powell, Brian P.; Torres, Guillermo +85 more
We report the first discovery of a transiting circumbinary planet detected from a single sector of Transiting Exoplanet Survey Satellite (TESS) data. During Sector 21, the planet TIC 172900988b transited the primary star and then five days later it transited the secondary star. The binary is itself eclipsing, with a period P ≈ 19.7 days and an ecc…