468 citations · 1.2k across the 19 of their papers we have counts for
20 papers
Frequency of planets orbiting M dwarfs in the Solar neighbourhood
M. Tuomi, H. R. A. Jones, R. P. Butler +14
The most abundant stars in the Galaxy, M dwarfs, are very commonly hosts to diverse systems of low-mass planets. Their abundancy implies that the general occurrence rate of planets…
A Six-Planet System Around the Star HD 34445
Steven S. Vogt, R. Paul Butler, Jennifer Burt +10
We present a new precision radial velocity dataset that reveals a multi-planet system orbiting the G0V star HD 34445. Our 18-year span consists of 333 precision radial velocity obs…
New Parallaxes for the Upper Scorpius OB Association
Jessica Donaldson, Alycia Weinberger, Jonathan Gagné +2
Upper Scorpius is a subgroup of the nearest OB association, Scorpius--Centaurus. Its young age makes it an important association to study star and planet formation. We present para…
Astrometric Constraints on the Masses of Long-Period Gas Giant Planets in the TRAPPIST-1 Planetary System
Alan P. Boss, Alycia J. Weinberger, Sandra A. Keiser +3
Transit photometry of the M8V dwarf star TRAPPIST-1 (2MASS J23062928-0502285) has revealed the presence of at least seven planets with masses and radii similar to that of Earth orb…
The LCES HIRES/Keck Precision Radial Velocity Exoplanet Survey
R. Paul Butler, Steven S. Vogt, Gregory Laughlin +8
We describe a 20-year survey carried out by the Lick-Carnegie Exoplanet Survey Team (LCES), using precision radial velocities from HIRES on the Keck-I telescope to find and charact…
New Parallaxes and a Convergence Analysis for the TW Hya Association
Jessica K. Donaldson, Alycia J. Weinberger, Jonathan Gagné +3
The TW Hya Association (TWA) is a nearby stellar association with an age of 5-10 Myr. This is an important age for studying the late stages of star and planet formation. We…