Poster Abstracts

Name/Affiliation:  Justin R. Crepp (Notre Dame)

Title:  TRENDS Discovery of a Benchmark T-dwarf Companion

The TRENDS high-contrast imaging program uses adaptive optics and coronagraphy to directly detect and characterize substellar companions that are responsible for accelerating their parent star, as manifest through subtle Doppler signals. In this talk, I will present the first directly imaged benchmark T-dwarf companion orbiting a solar-type star with a measured radial velocity acceleration. The object, HD 19467 B, has blue colors and is more than 100,000 times fainter than its primary star at near-infrared wavelengths. We have calculated a firm lower limit to its mass using orbital dynamics.