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13 papers · 1 filter
The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems
Mark R. Giovinazzi, Cullen H. Blake, Paul Robertson +26
We present a set of companion dynamical masses and orbital parameters of seven star systems from the NEID Earth Twin Survey with significant absolute astrometric accelerations betw…
The death of Vulcan: NEID reveals the planet candidate orbiting HD 26965 is stellar activity
Abigail Burrows, Samuel Halverson, Jared C. Siegel +17
We revisit the long-studied radial velocity (RV) target HD26965 using recent observations from the NASA-NSF 'NEID' precision Doppler facility. Leveraging a suite of classical activ…
A High-Eccentricity Warm Jupiter Orbiting TOI-4127
Arvind F. Gupta, Jonathan M. Jackson, Guillaume Hebrard +36
We report the discovery of TOI-4127 b, a transiting, Jupiter-sized exoplanet on a long-period ( d), high-eccentricity orbit around a late F-type…
GJ 3929: High Precision Photometric and Doppler Characterization of an Exo-Venus and its Hot, Mini-Neptune-mass Companion
Corey Beard, Paul Robertson, Shubham Kanodia +31
We detail the follow up and characterization of a transiting exo-Venus identified by TESS, GJ 3929b, (TOI-2013b) and its non-transiting companion planet, GJ 3929c (TOI-2013c). GJ 3…
A close-in puffy Neptune with hidden friends: The enigma of TOI 620
Michael A. Reefe, Rafael Luque, Eric Gaidos +82
We present the validation of a transiting low-density exoplanet orbiting the M2.5 dwarf TOI 620 discovered by the NASA TESS mission. We utilize photometric data from both TESS and…
NEID Rossiter-McLaughlin Measurement of TOI-1268b: A Young Warm Saturn Aligned with Its Cool Host Star
Jiayin Dong, Chelsea X. Huang, George Zhou +56
Close-in gas giants present a surprising range of stellar obliquity, the angle between a planet's orbital axis and its host star's spin axis. It is unclear whether the obliquities…