Search Results - "Yee, Samuel W."
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Precision Stellar Characterization of FGKM Stars using an Empirical Spectral Library
Published in The Astrophysical journal (10-02-2017)“…Classification of stars, by comparing their optical spectra to a few dozen spectral standards, has been a workhorse of observational astronomy for more than a…”
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The Period Distribution of Hot Jupiters Is Not Dependent on Host Star Metallicity
Published in Astrophysical journal. Letters (01-06-2023)“…Abstract The probability that a Sun-like star has a close-orbiting giant planet (period ≲1 yr) increases with stellar metallicity. Previous work provided…”
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Evidence for Primordial Alignment: Insights from Stellar Obliquity Measurements for Compact Sub-Saturn Systems
Published in The Astronomical journal (01-09-2024)“…Abstract Despite decades of effort, the mechanisms by which the spin axis of a star and the orbital axes of its planets become misaligned remain elusive. In…”
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Scaling K2. VI. Reduced Small-planet Occurrence in High-galactic-amplitude Stars
Published in The Astronomical journal (01-06-2023)“…Abstract In this study, we performed a homogeneous analysis of the planets around FGK dwarf stars observed by the Kepler and K2 missions, providing…”
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The PFS View of TOI-677 b: A Spin–Orbit Aligned Warm Jupiter in a Dynamically Hot System
Published in The Astronomical journal (01-04-2024)“…Abstract TOI-677 b is part of an emerging class of “tidally detached” gas giants ( a / R ⋆ ≳ 11) that exhibit large orbital eccentricities and yet low stellar…”
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A Larger Sample Confirms Small Planets around Hot Stars Are Misaligned
Published in Astrophysical journal. Letters (01-06-2024)“…The distribution of stellar obliquities provides critical insight into the formation and evolution pathways of exoplanets. In the past decade, it was found…”
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Verification of Gaia Data Release 3 Single-lined Spectroscopic Binary Solutions With Three Transiting Low-mass Secondaries
Published in The Astronomical journal (01-12-2023)“…Abstract While secondary mass inferences based on single-lined spectroscopic binary (SB1) solutions are subject to sin i degeneracies, this degeneracy can be…”
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The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets
Published in The Astrophysical journal. Supplement series (01-03-2023)“…Abstract NASA’s Transiting Exoplanet Survey Satellite (TESS) mission promises to improve our understanding of hot Jupiters by providing an all-sky,…”
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The TESS-Keck Survey. XII. A Dense 1.8 R ⊕ Ultra-short-period Planet Possibly Clinging to a High-mean-molecular-weight Atmosphere after the First Gigayear
Published in The Astronomical journal (01-04-2024)“…Abstract The extreme environments of ultra-short-period planets (USPs) make excellent laboratories to study how exoplanets obtain, lose, retain, and/or regain…”
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Migration and Evolution of giant ExoPlanets (MEEP). I. Nine Newly Confirmed Hot Jupiters from the TESS Mission
Published in The Astronomical journal (01-07-2024)“…Abstract Hot Jupiters were many of the first exoplanets discovered in the 1990s, but in the decades since their discovery the mysteries surrounding their…”
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TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap
Published in The Astronomical journal (01-02-2023)“…Abstract Populating the exoplanet mass–radius diagram in order to identify the underlying relationship that governs planet composition is driving an…”
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The California Legacy Survey. V. Chromospheric Activity Cycles in Main-sequence Stars
Published in The Astrophysical journal. Supplement series (01-10-2024)“…Abstract We present optical spectroscopy of 710 solar neighborhood stars collected over 20 years to catalog chromospheric activity and search for stellar…”
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An Earth-sized Planet on the Verge of Tidal Disruption
Published in The Astronomical journal (01-09-2024)“…Abstract TOI-6255 b (GJ 4256) is an Earth-sized planet (1.079 ± 0.065 R ⊕ ) with an orbital period of only 5.7 hr. With the newly commissioned Keck Planet…”
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The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars
Published in The Astronomical journal (01-07-2023)“…Abstract We present the stellar and planetary properties for 85 TESS Objects of Interest (TOIs) hosting 108 planet candidates that compose the TESS-Keck Survey…”
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The TESS-Keck Survey. XX. 15 New TESS Planets and a Uniform RV Analysis of All Survey Targets
Published in The Astrophysical journal. Supplement series (01-06-2024)“…Abstract The Transiting Exoplanet Survey Satellite (TESS) has discovered hundreds of new worlds, with TESS planet candidates now outnumbering the total number…”
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NEID Reveals That the Young Warm Neptune TOI-2076 b Has a Low Obliquity
Published in Astrophysical journal. Letters (01-02-2023)“…TOI-2076 b is a sub-Neptune-sized planet (R = 2.39 ± 0.10 Rꚛ) that transits a young (204 ± 50 MYr) bright (V = 9.2) K-dwarf hosting a system of three…”
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TOI-4201: An Early M Dwarf Hosting a Massive Transiting Jupiter Stretching Theories of Core Accretion
Published in Astrophysical journal. Letters (01-02-2024)“…Abstract We confirm TOI-4201 b as a transiting Jovian-mass planet orbiting an early M dwarf discovered by the Transiting Exoplanet Survey Satellite. Using…”
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A Larger Sample Confirms Small Planets around Hot Stars Are Misaligned ∗ ∗ The data presented herein were obtained at the W. M. Keck Observatory, operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation
Published in Astrophysical journal. Letters (03-06-2024)Get full text
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The TESS Grand Unified Hot Jupiter Survey
Published 01-01-2023“…Hot Jupiters – gas giant planets that orbit their stars once every few days – were a surprising discovery at the dawn of the exoplanet era. The existence of…”
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