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A Mini-Neptune from TESS and CHEOPS Around the 120 Myr Old AB Dor Member HIP 94235
DOI: 10.3847/1538-3881/ac69e3 Bibcode: 2022AJ....163..289Z

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…

2022 The Astronomical Journal
CHEOPS Gaia Hipparcos 18
A CHEOPS Search for Massive, Long-period Companions to the Warm Jupiter K2-139 b
DOI: 10.3847/1538-3881/ac704c Bibcode: 2022AJ....164...21S

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…

2022 The Astronomical Journal
CHEOPS Gaia 3