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The Solar Neighborhood. XXVI. AP Col: The Closest (8.4 pc) Pre-Main-Sequence Star
Adric R. Riedel, Simon J. Murphy, Todd J. Henry +3
We present the results of a multi-technique investigation of the M4.5Ve flare star AP Col, which we discover to be the nearest pre-main-sequence star. These include astrometric dat…
The Solar Neighborhood XXIV. Parallax Results from the CTIOPI 0.9-m Program: Stars with 1\farcs0 yr (MOTION Sample) and Subdwarfs
Wei-Chun Jao, Todd J. Henry, John P. Subasavage +3
We present 41 trigonometric parallaxes of 37 stellar systems, most of which have proper motions greater than 1\farcs0 yr. These are the first trigonometric parallaxes for 24…
Astrophysical Parameters and Habitable Zone of the Exoplanet Hosting Star GJ 581
Kaspar von Braun, Tabetha S. Boyajian, Stephen R. Kane +18
GJ 581 is an M dwarf host of a multiplanet system. We use long-baseline interferometric measurements from the CHARA Array, coupled with trigonometric parallax information, to direc…