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Distance Dependent Offsets between Parallaxes for Nearby Stars and Gaia DR1 Parallaxes
Wei-Chun Jao, Todd J. Henry, Adric R. Riedel +3
We use 612 single stars with previously published trigonometric parallaxes placing them within 25 pc to evaluate parallaxes released in Gaia's first data release (DR1). We find tha…
The Solar Neighborhood XXXVIII. Results from the CTIO/SMARTS 0.9m: Trigonometric Parallaxes for 151 Nearby M Dwarf Systems
Jennifer G. Winters, R. Andrew Sevrinsky, Wei-Chun Jao +5
We present 160 new trigonometric parallaxes for 151 M dwarf systems from the REsearch Consortium On Nearby Stars (RECONS) group's long-term astrometry/photometry program at the CTI…
Speckle Imaging Excludes Low-Mass Companions Orbiting the Exoplanet Host Star TRAPPIST-1
Steve B. Howell, Mark E. Everett, Elliott P. Horch +4
We have obtained the highest resolution images available of TRAPPIST-1 using the Gemini-South telescope and our speckle imaging camera. Observing at 692 and 883 nm, we reached the…