Search Results - "Bouma, Luke G"
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The Empirical Limits of Gyrochronology
Published in Astrophysical journal. Letters (01-04-2023)“…Abstract The promise of gyrochronology is that, given a star’s rotation period and mass, its age can be inferred. The reality of gyrochronology is complicated…”
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SPYGLASS. V. Spatially and Temporally Structured Star-forming Environments in the Cepheus-Hercules Complex
Published in The Astrophysical journal (01-11-2024)“…Abstract Young associations record complete histories of star-forming events through their demographics and dynamics, and Gaia has greatly expanded our…”
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3
Overfitting Affects the Reliability of Radial Velocity Mass Estimates of the V1298 Tau Planets
Published in The Astronomical journal (01-08-2023)“…Abstract Mass, radius, and age measurements of young (≲100 Myr) planets have the power to shape our understanding of planet formation. However, young stars…”
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4
Transient Corotating Clumps around Adolescent Low-mass Stars from Four Years of TESS
Published in The Astronomical journal (01-01-2024)“…Abstract Complex periodic variables (CPVs) are stars that exhibit highly structured and periodic optical light curves. Previous studies have indicated that…”
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TESS Hunt for Young and Maturing Exoplanets (THYME). XI. An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400 Myr Ursa Major Moving Group
Published in The Astronomical journal (01-02-2024)“…Abstract Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary formation and evolution. We present the discovery of HD…”
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6
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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A Transiting Super-Earth in the Radius Valley and an Outer Planet Candidate Around HD 307842
Published in The Astronomical journal (01-07-2023)“…Abstract We report the confirmation of a TESS-discovered transiting super-Earth planet orbiting a mid-G star, HD 307842 (TOI-784). The planet has a period of…”
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A 2:1 Mean-motion Resonance Super-Jovian Pair Revealed by TESS, FEROS, and HARPS
Published in Astrophysical journal. Letters (01-04-2023)“…Abstract We report the discovery of a super-Jovian 2:1 mean-motion resonance (MMR) pair around the G-type star TIC 279401253, whose dynamical architecture is a…”
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9
Stellar Rotation and Structure of the α Persei Complex: When Does Gyrochronology Start to Work?
Published in The Astronomical journal (01-07-2023)“…Abstract On the pre-main sequence, the rotation rates of Sun-like stars are dictated by the interplay between the protostellar disk and the star’s contraction…”
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10
Untangling the Galaxy. IV. Empirical Constraints on Angular Momentum Evolution and Gyrochronology for Young Stars in the Field
Published in The Astronomical journal (01-10-2022)“…Abstract We present a catalog of ∼100,000 periodic variable stars in Transiting Exoplanet Survey Satellite (TESS) full-frame image data among members of widely…”
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A Low-mass Pre-main-sequence Eclipsing Binary in Lower Centaurus Crux Discovered with TESS
Published in The Astrophysical journal (01-12-2022)“…Abstract We report the discovery of 2M1222−57 as a low-mass, pre-main-sequence (PMS) eclipsing binary (EB) in the Lower Centaurus Crux (LCC) association for…”
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12
The Discovery of a Planetary Companion Interior to Hot Jupiter WASP-132 b
Published in The Astronomical journal (01-07-2022)“…Abstract Hot Jupiters are generally observed to lack close planetary companions, a trend that has been interpreted as evidence for high-eccentricity migration…”
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13
Evidence for Centrifugal Breakout around the Young M Dwarf TIC 234284556
Published in The Astrophysical journal (01-01-2022)“…Abstract Magnetospheric clouds have been proposed as explanations for depth-varying dips in the phased light curves of young, magnetically active stars such as…”
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14
TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in Its Atmosphere
Published in The Astrophysical journal (01-11-2021)“…We present the discovery of TOI-1518b—an ultra-hot Jupiter orbiting a bright star (V = 8.95). The transiting planet is confirmed using high-resolution optical…”
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15
Discovery and Characterization of a Rare Magnetic Hybrid β Cephei Slowly Pulsating B-type Star in an Eclipsing Binary in the Young Open Cluster NGC 6193
Published in The Astrophysical journal (01-04-2021)“…Abstract As many as 10% of OB-type stars have global magnetic fields, which is surprising given that their internal structure is radiative near the surface. A…”
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TESS Hunt for Young and Maturing Exoplanets (THYME). IX. A 27 Myr Extended Population of Lower Centaurus Crux with a Transiting Two-planet System
Published in The Astronomical journal (01-03-2023)“…Abstract We report the discovery and characterization of a nearby (∼85 pc), older (27 ± 3 Myr), distributed stellar population near Lower Centaurus Crux (LCC),…”
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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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A super-massive Neptune-sized planet
Published in Nature (London) (12-10-2023)“…Neptune-sized planets exhibit a wide range of compositions and densities, depending on factors related to their formation and evolution history, such as the…”
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TOI-5126: a hot super-Neptune and warm Neptune pair discovered by TESS and CHEOPS
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT We present the confirmation of a hot super-Neptune with an exterior Neptune companion orbiting a bright (V = 10.1 mag) F-dwarf identified by the…”
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TOI-1842b: A Transiting Warm Saturn Undergoing Reinflation around an Evolving Subgiant
Published in The Astronomical journal (01-02-2022)“…Abstract The imminent launch of space telescopes designed to probe the atmospheres of exoplanets has prompted new efforts to prioritize the thousands of…”
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