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An Infant Sub-Saturn in Scorpius-Centaurus
Gurmeher Kathuria, Luke G. Bouma, Andrew W. Boyle +25
We report the discovery and validation of TIC 88297141 Ab, a transiting planet orbiting a pre-main-sequence M dwarf (0.31 solar masses, 0.74 solar radii) in the Scorpius-Centaurus…
Toddlers in Resonance I: low masses and eccentricities of the 17 Myr giant planets HIP 67522 bc from transit timing variations
Hannah R. James, Madyson G. Barber, Andrew W. Mann +28
Infant (100\,Myr) transiting planet systems provide glimpses into the processes that shape the observed mature planet population. Masses for these planets are powerful data poin…
The T16 Planet Hunt: 10,000 New Planet Candidates from TESS Cycle 1 and the Confirmation of a Hot Jupiter Around TIC 183374187
Joshua T. Roth, Joel D. Hartman, Gáspár Á. Bakos +12
The T16 project has produced a uniformly detrended and systematics-corrected set of 83,717,159 TESS Cycle 1 full-frame image light curves for stars observed by TESS in its primary…
High five from ASTEP: Three validated planets and two eclipsing binaries in a diverse set of long-period candidates
Erika Rea, Maximilian N. Günther, George Dransfield +44
We present the analysis of five long-period TESS Objects of Interest (TOIs), all orbiting Sun-like stars, with orbital periods exceeding one month. Initially identified by the Tran…
The HD 60779 Planetary System: A Transiting Sub-Neptune on a 30-day Orbit and a More Massive Outer World
Victoria DiTomasso, David Charbonneau, Andrew Vanderburg +37
We present the discovery of the planetary system orbiting the bright (V = 7.2), nearby (35 pc), Sun-like star HD 60779, which has a mass of 1.050 +/- 0.044 solar masses and a radiu…
Planet Masses, Radii, and Orbits from NASA's K2 Mission
Andrew W. Howard, Evan Sinukoff, Sarah Blunt +50
We report the masses, sizes, and orbital properties of 86 planets orbiting 55 stars observed by NASA's K2 Mission with follow-up Doppler measurements by the HIRES spectrometer at t…
A 16 Myr super-Neptune in Upper-Centaurus Lupus and a preliminary survey of transiting planets in Sco-Cen with TESS
Sydney Vach, George Zhou, Andrew W. Mann +25
Measuring the properties of planets younger than about 50 Myr helps to test different planetary formation and evolution models. NASA's Transiting Exoplanet Survey Satellite (TESS)…
A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS
T. Zingales, L. Malavolta, L. Borsato +130
We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest…
A transiting multi-planet system in the 61 million year old association Theia 116
Sydney Vach, George Zhou, Chelsea X. Huang +28
Observing and characterizing young planetary systems can aid in unveiling the evolutionary mechanisms that sculpt the mature exoplanet population. As an all-sky survey, NASA's Tran…
TESS Hunt for Young and Maturing Exoplanets (THYME) X: a two-planet system in the 210 Myr MELANGE-5 Association
Pa Chia Thao, Andrew W. Mann, Madyson G. Barber +35
Young (<500 Myr) planets are critical to studying how planets form and evolve. Among these young planetary systems, multi-planet configurations are particularly useful as they prov…
The TEMPO Survey II: Science Cases Leveraged from a Proposed 30-Day Time Domain Survey of the Orion Nebula with the Nancy Grace Roman Space Telescope
Melinda Soares-Furtado, Mary Anne Limbach, Andrew Vanderburg +26
The TEMPO (Transiting Exosatellites, Moons, and Planets in Orion) Survey is a proposed 30-day observational campaign using the Nancy Grace Roman Space Telescope. By providing deep,…
The Prevalence of Resonance Among Young, Close-in Planets
Fei Dai, Max Goldberg, Konstantin Batygin +11
Multiple planets undergoing disk migration may be captured into a chain of mean-motion resonances with the innermost planet parked near the disk's inner edge. Subsequent dynamical…
The occurrence of small, short-period planets younger than 200 Myr with TESS
Sydney Vach, George Zhou, Chelsea X. Huang +10
Within the first few hundreds of millions of years, many physical processes sculpt the eventual properties of young planets. NASA's TESS mission has surveyed young stellar associat…
TESS Hunt for Young and Maturing Exoplanets (THYME) XI: An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400Myr Ursa Major Moving Group
Benjamin K. Capistrant, Melinda Soares-Furtado, Andrew Vanderburg +32
Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary formation and evolution. We present the discovery of HD 63433d - a nearby (22pc), Eart…
TOI-5126: A hot super-Neptune and warm Neptune pair discovered by and
Tyler R. Fairnington, Emma Nabbie, Chelsea X. Huang +33
We present the confirmation of a hot super-Neptune with an exterior Neptune companion orbiting a bright (V = 10.1 mag) F-dwarf identified by the $\textit{Transiting Exoplanet Surve…
TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary
J. Hagelberg, L. D. Nielsen, O. Attia +30
We report the discovery of a hot Jupiter on a 3.28-day orbit around a 1.08 M G0 star that is the secondary component in a loose binary system. Based on follow-up radial vel…
A super-massive Neptune-sized planet
L. Naponiello, L. Mancini, A. Sozzetti +55
Neptune-sized planets exhibit a wide range of compositions and densities, depending onf cators related to their formation and evolution history, such as the distance from their hos…
TOI-332 b: a super dense Neptune found deep within the Neptunian desert
Ares Osborn, David J. Armstrong, Jorge Fernández Fernández +49
To date, thousands of planets have been discovered, but there are regions of the orbital parameter space that are still bare. An example is the short period and intermediate mass/r…
TOI 4201 b and TOI 5344 b: Discovery of Two Transiting Giant Planets Around M Dwarf Stars and Revised Parameters for Three Others
J. D. Hartman, G. Á. Bakos, Z. Csubry +62
We present the discovery from the TESS mission of two giant planets transiting M dwarf stars: TOI 4201 b and TOI 5344 b. We also provide precise radial velocity measurements and up…
Overfitting Affects the Reliability of Radial Velocity Mass Estimates of the V1298 Tau Planets
Sarah Blunt, Adolfo Carvalho, Trevor J. David +23
Mass, radius, and age measurements of young (<100 Myr) planets have the power to shape our understanding of planet formation. However, young stars tend to be extremely variable in…
A Transiting Super-Earth in the Radius Valley and An Outer Planet Candidate Around HD 307842
Xinyan Hua, Sharon Xuesong Wang, Johanna K. Teske +32
We report the confirmation of a TESS-discovered transiting super-Earth planet orbiting a mid-G star, HD 307842 (TOI-784). The planet has a period of 2.8 days, and the radial veloci…
A Mini-Neptune Orbiting the Metal-poor K Dwarf BD+29 2654
Fei Dai, Kevin C. Schlaufman, Henrique Reggiani +48
We report the discovery and Doppler mass measurement of a 7.4-day 2.3- mini-Neptune around a metal-poor K dwarf BD+29 2654 (TOI-2018). Based on a high-resolution Keck/HIR…
A 2:1 Mean-Motion Resonance Super-Jovian pair revealed by TESS, FEROS, and HARPS
Vladimir Bozhilov, Desislava Antonova, Melissa J. Hobson +24
We report the discovery of a super-Jovian 2:1 mean-motion resonance (MMR) pair around the G-type star TIC 279401253, whose dynamical architecture is a prospective benchmark for pla…
TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain
Fei Dai, Kento Masuda, Corey Beard +60
Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMR). Dynamical evolution over time could…