2014/08/19 by E. Høg, Erik Høg, Høg, Erik
Physics and Astronomy · #Astro and Planetary Science #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Planetary Science and Exploration #Stellar, planetary, and galactic studies #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1408.4341
12 pages, 5 figures. Contribution to the study of a Gaia successsor in "Absolute astrometry in the next 50 years" at http://arxiv.org/abs/1408.2190
arxiv created 2014/08/19 · openalex publication_date 2014/08/19 · arxiv updated 2014/08/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Detection and orbit determination for thousands of planets with periods up to about 40 years would be obtained by astrometry from two Gaia-like missions, results which cannot be obtained by any other mission, planned or proposed. A billion stars of all spectral types will be surveyed. A comprehensive knowledge about heavy planets with these periods, reaching well beyond the snow line of any system, will lead to a better understanding of the formation and evolution of planets, also in the habitable zone.