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CD-27 11535: Evidence for a Triple System in the Pictoris Moving Group
Andrew D. Thomas, Eric L. Nielsen, Robert J. De Rosa +20
We present new spatially resolved astrometry and photometry of the CD-27 11535 system, a member of the Pictoris moving group consisting of two resolved K-type stars on a …
Speckle Observations of TESS Exoplanet Host Stars. II. Stellar Companions at 1-1000 AU and Implications for Small Planet Detection
Kathryn V. Lester, Rachel A. Matson, Steve B. Howell +7
We present high angular resolution imaging observations of 517 host stars of TESS exoplanet candidates using the `Alopeke and Zorro speckle cameras at Gemini North and South. The s…
Discovery of a White Dwarf Companion to HD 159062
Lea A. Hirsch, David R. Ciardi, Andrew W. Howard +11
We report on the discovery of a white dwarf companion to the nearby late G dwarf star, HD 159062. The companion is detected in 14 years of precise radial velocity (RV) data, and in…
Observations of Binary Stars with the Differential Speckle Survey Instrument. VIII. Measures of Metal-Poor Stars and Triple Stars from 2015 to 2018
Elliott P. Horch, Andrei Tokovinin, Samuel A. Weiss +15
We present 248 speckle observations of 43 binary and 19 trinary star systems chosen to make progress in two main areas of investigation: the fundamental properties of metal poor st…
The Kepler Follow-Up Observation Program. I. A Catalog of Companions to Kepler Stars from High-Resolution Imaging
E. Furlan, D. R. Ciardi, M. E. Everett +16
We present results from high-resolution, optical to near-IR imaging of host stars of Kepler Objects of Interest (KOIs), identified in the original Kepler field. Part of the data we…
A Comparison of Spectroscopic versus Imaging Techniques for Detecting Close Companions to Kepler Objects of Interest
Johanna K. Teske, Mark E. Everett, Lea Hirsch +6
(Abbreviated) Kepler planet candidates require both spectroscopic and imaging follow-up observations to rule out false positives and detect blended stars. [...] In this paper, we e…