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Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions

  • Authors: Adrian M. Price-Whelan, David W. Hogg, Hans-Walter Rix, Nathan De Lee, Steven R. Majewski, David L. Nidever, Nicholas Troup, José G. Fernández-Trincado, Domingo A. García-Hernández, Penélope Longa-Peña, Christian Nitschelm, Jennifer Sobeck, and Olga Zamora

2018 The Astronomical Journal 156 18.

  • Provider: AAS Journals

Caption: Figure 5.

Examples of stars in our high-K sample, i.e., stars that likely have companions (see Section 5.1), with different numbers of visits. Left panels show the data (black markers, error bars are the visit velocity uncertainties) with 128 random orbits from the 256 posterior samples underplotted (lines, blue). The APOGEE_ID of each target and the number of visits that pass our quality cuts, N, are indicated on each panel. Right panels show the 256 posterior samples visualized in period–eccentricity space. In most cases, despite confidently having companions based on the RV amplitude, the permitted orbit fits are highly multimodal.

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