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The California Legacy Survey I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades

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arxiv 2105.11583 v2 pith:QAHR3VIY submitted 2021-05-25 astro-ph.EP

classification astro-ph.EP
keywords catalogexoplanetsradialplanetvelocitydiscoveredexoplanetgiant
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We present a high-precision radial velocity (RV) survey of 719 FGKM stars, which host 164 known exoplanets and 14 newly discovered or revised exoplanets and substellar companions. This catalog updated the orbital parameters of known exoplanets and long-period candidates, some of which have decades-longer observational baselines than they did upon initial detection. The newly discovered exoplanets range from warm sub-Neptunes and super-Earths to cold gas giants. We present the catalog sample selection criteria, as well as over 100,000 radial velocity measurements, which come from the Keck-HIRES, APF-Levy, and Lick-Hamilton spectrographs. We introduce the new RV search pipeline RVSearch that we used to generate our planet catalog, and we make it available to the public as an open-source Python package. This paper is the first study in a planned series that will measure exoplanet occurrence rates and compare exoplanet populations, including studies of giant planet occurrence beyond the water ice line, and eccentricity distributions to explore giant planet formation pathways. We have made public all radial velocities and associated data that we use in this catalog.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Companion Architectures of Sub-Saturns: Distinct Migration Pathways Across the Neptunian Landscape

    astro-ph.EP 2026-07 accept novelty 6.0 of 10

    Desert/ridge sub-Saturns show ~10% nearby-companion rates like hot Jupiters; savanna ones show ~70% like warm Jupiters, supporting HEM versus quiescent migration.

  2. The GAPS Programme with HARPS-N at TNG LXXVII. Occurrence rates of small close-in planets in the presence of cold Jupiters

    astro-ph.EP 2026-07 accept novelty 6.0 of 10

    Occurrence rates of hot/warm/cool Neptunes and Super-Earths around cold-Jupiter hosts are ~5–16%, higher when the outer giant leaves a stable inner zone, with no strong ISP–CJ correlation at average metallicity.

  3. On the Eccentricity Distribution and Tidal Evolution of Transiting Brown Dwarfs

    astro-ph.EP 2026-07 conditional novelty 6.0 of 10

    Short-period (P<16 d) transiting brown dwarfs are low-eccentricity while longer-period ones are more excited; assuming a shared primordial Beta distribution, tidal evolution constrains Q_BD ≈ 10^{7.1–8.1}.

  4. Searching for Habitable Exoplanets with Relative Astrometry (SHERA). I. The Case for Searching for Planets in Binary Star Systems

    astro-ph.EP 2026-08 conditional novelty 4.0 of 10

    SHERA is a proposed Small Explorer astrometry mission that could detect rocky habitable-zone planets around 14 nearby Sun-like stars in binary systems using microarcsecond relative astrometry.

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