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TS23/McDonald and FIES/NOT strike again. Two new warm Jupiter systems and outer companions in a third
E. Knudstrup, D. Gandolfi, W. D. Cochran +29
Warm Jupiters (gas giant planets with orbital periods of P8-200 d) are thought to be largely unaffected by the tidal interactions that can erase information about the dynamic…
The Cephei System: Updated Orbits, Dynamical Architecture, and Limits on Additional Companions
Judah Van Zandt, Brendan P. Bowler, Michael Endl +18
The Cephei system hosts one of the first exoplanets discovered and is orbited by one of the closest known stellar companions to a planet-hosting star. Here, we derive updated o…
The Hot Neptune Initiative (HONEI) III. An ultra-hot super Neptune orbiting the metal-rich subgiant star TOI-5646: the largest host for a desert dweller
L. Mancini, F. Manni, D. Kubyshkina +25
We report the confirmation of the TESS transiting-planet candidate orbiting the metal-rich F8\,IV-V subgiant star TOI-5646 (V=11.38 mag; T=6136 K). The planetary nature of TOI-5646…
Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b
Ilaria Carleo, Oscar Barrágan, Carina M. Persson +67
Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters, challenging our und…
TOI-1408: Discovery and Photodynamical Modeling of a Small Inner Companion to a Hot Jupiter Revealed by TTVs
Judith Korth, Priyanka Chaturvedi, Hannu Parviainen +60
We report the discovery and characterization of a small planet, TOI-1408 c, on a 2.2-day orbit located interior to a previously known hot Jupiter, TOI-1408 b ( d, $M=1.86\p…
Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey: III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-Transit Jupiter Orbiting TOI-2010
Christopher R. Mann, Paul A. Dalba, David Lafrenière +48
Large-scale exoplanet surveys like the TESS mission are powerful tools for discovering large numbers of exoplanet candidates. Single-transit events are commonplace within the resul…
The McDonald Accelerating Stars Survey (MASS): Architecture of the Ancient Five-Planet Host System Kepler-444
Zhoujian Zhang, Brendan P. Bowler, Trent J. Dupuy +11
We present the latest and most precise characterization of the architecture for the ancient ( Gyr) Kepler-444 system, which is composed of a K0 primary star (Kepler-444…
TOI-2046b, TOI-1181b and TOI-1516b, three new hot Jupiters from \textit{TESS}: planets orbiting a young star, a subgiant and a normal star
Petr Kabáth, Priyanka Chaturvedi, Phillip J. MacQueen +54
We present the confirmation and characterization of three hot Jupiters, TOI-1181b, TOI-1516b, and TOI-2046b, discovered by the TESS space mission. The reported hot Jupiters have or…
Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographs
E. Knudstrup, L. M. Serrano, D. Gandolfi +37
We report the confirmation and characterisation of TOI-1820~b, TOI-2025~b, and TOI-2158~b, three Jupiter-sized planets on short-period orbits around G-type stars detected by TESS.…
TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to have Originated from High-Eccentricity Migration
Quang H. Tran, Brendan P. Bowler, Michael Endl +38
We report the discovery of two transiting planets around the bright ( mag) main sequence F7 star TOI-1670 by the Transiting Exoplanet Survey Satellite. TOI-1670 b is a sub-N…
Scaling K2. V. Statistical Validation of 60 New Exoplanets From K2 Campaigns 2-18
Jessie L. Christiansen, Sakhee Bhure, Jon K. Zink +39
The NASA K2 mission, salvaged from the hardware failures of the Kepler telescope, has continued Kepler's planet-hunting success. It has revealed nearly 500 transiting planets aroun…
TOI-1268b: the youngest, hot, Saturn-mass transiting exoplanet
J. Šubjak, M. Endl, P. Chaturvedi +41
We report the discovery of TOI-1268b, a transiting Saturn-mass planet from the TESS space mission. With an age of less than one Gyr, derived from various age indicators, TOI-1268b…
TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data
Veselin B. Kostov, Brian P. Powell, Jerome A. Orosz +86
We report the first discovery of a transiting circumbinary planet detected from a single sector of TESS data. During Sector 21, the planet TIC 172900988b transited the primary star…
Ultra Short Period Planets in K2 III: Neighbors are Common with 13 New Multi-Planet Systems and 10 Newly Validated Planets in Campaigns 0-8, 10
Elisabeth R. Adams, Brian Jackson, Samantha Johnson +14
Using the EVEREST photometry pipeline, we have identified 74 candidate ultra-short-period planets (orbital period P<1 d) in the first half of the K2 data (Campaigns 0-8 and 10). Of…
Radial Velocity Discovery of an Eccentric Jovian World Orbiting at 18 au
Sarah Blunt, Michael Endl, Lauren M. Weiss +25
Based on two decades of radial velocity (RV) observations using Keck/HIRES and McDonald/Tull, and more recent observations using the Automated Planet Finder, we found that the near…
K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star
M. C. Johnson, F. Dai, A. B. Justesen +45
We present the discovery and confirmation of two new transiting giant planets from the Kepler extended mission K2. K2-260 b is a hot Jupiter transiting a F6V star in K2 Fi…
The KELT Follow-Up Network and Transit False Positive Catalog: Pre-vetted False Positives for TESS
Karen A. Collins, Kevin I. Collins, Joshua Pepper +108
The Kilodegree Extremely Little Telescope (KELT) project has been conducting a photometric survey for transiting planets orbiting bright stars for over ten years. The KELT images h…
Orbit and Dynamical Mass of the Late-T Dwarf Gl 758 B
Brendan P. Bowler, Trent J. Dupuy, Michael Endl +11
Gl 758 B is a late-T dwarf orbiting a metal-rich Sun-like star at a projected separation of 1.6" (25 AU). We present four epochs of astrometry of this system with NIR…
EPIC 210894022b - A short period super-Earth transiting a metal poor, evolved old star
Malcolm Fridlund, Eric Gaidos, Oscar Barragán +31
The star EPIC 210894022 has been identified from a light curve acquired through the K2 space mission as possibly orbited by a transiting planet. Our aim is to confirm the planetary…
Ultra Short Period Planets in K2 with companions: a double transiting system for EPIC 220674823
Elisabeth R. Adams, Brian Jackson, Michael Endl +10
Two transiting planets have been identified orbiting K2 target EPIC 220674823. One object is an ultra-short-period planet (USP) with a period of just 0.57 days (13.7 hours), while…
A 12-Year Activity Cycle for HD 219134
Marshall C. Johnson, Michael Endl, William D. Cochran +8
The nearby (6.5 pc) star HD 219134 was recently shown by Motalebi et al. (2015) and Vogt et al. (2015) to host several planets, the innermost of which is transiting. We present twe…
Two New Long-Period Giant Planets from the McDonald Observatory Planet Search and Two Stars with Long-Period Radial Velocity Signals Related to Stellar Activity Cycles
Michael Endl, Erik J. Brugamyer, William D. Cochran +16
We report the detection of two new long-period giant planets orbiting the stars HD 95872 and HD 162004 (psi1 Draconis B) by the McDonald Observatory planet search. The planet HD 95…
Kepler-424 b: A "Lonely" Hot Jupiter That Found A Companion
Michael Endl, Douglas A. Caldwell, Thomas Barclay +13
Hot Jupiter systems provide unique observational constraints for migration models in multiple systems and binaries. We report on the discovery of the Kepler-424 (KOI-214) two-plane…
CoRoT-22 b: a validated 4.9 RE exoplanet in 10-day orbit
C. Moutou, J-M. Almenara, R. F. Diaz +36
The CoRoT satellite has provided high-precision photometric light curves for more than 163,000 stars and found several hundreds of transiting systems compatible with a planetary sc…