A hybrid self-supervised and consensus-supervised model yields calibrated rotation periods for 148,746 Kepler main-sequence stars and identifies bimodal signals where the longer mode is the true rotation.
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Old field stars spin down faster at low masses and slower at high masses than standard Rossby-scaled wind models predict, pointing to a mass-dependent stellar wind term or a bias in the kinematic ages themselves.
KELT-23A b orbits its cool, Sun-like host star on a retrograde or near-polar path, making it one of the few cool-star hot Jupiters with a highly misaligned orbit.
After anchoring gyrochronology and [C/N] ages to the same age-velocity-dispersion relation, the two methods give consistent ages once small offsets are subtracted, and their valid parameter spaces are mapped.
A neural network applied to de-blended Kepler light curves yields 32,159 rotation periods, 9,811 of them new, but up to 63% of periodic background light curves remain blended with foreground sources.
TESS stellar rotation periods are accurate for most stars spinning faster than once per 10 days, but become unreliable beyond about 12 days, and stitching multiple sectors does not fix the problem.
Asteroseismic ages of individual red giants in the same cluster scatter far more than expected and are systematically offset from isochrone-based cluster ages across all seven clusters studied.
A compact system's inner ultra-short-period planet can be misaligned by either the host star's early oblateness or an unseen outer companion, without unstabling the outer planets.
A pipeline using Butterworth filtering and Lomb-Scargle periodograms on Kepler SAP light curves yields over 1,000 main-sequence rotators with periods above 30 days, including 165 new ones.
Combining rotation-based and evolution-based age estimates in one Bayesian model improves stellar age precision by up to a factor of three for FGK dwarfs, and ships as the open-source package stardate.
Tentative evidence for a super-Jupiter at 15-100 AU or brown dwarf at 20-170 AU in 51 Pegasi from RV curvature, but the signal is likely driven by Lick/Hamilton instrument drift.
A Kepler-data catalog of surface rotation periods and photometric activity for about 15,900 M and K main-sequence stars, including about 4,431 new rotation periods and cross-checks against the McQuillan et al. catalog.
The HAges catalog compiles published asteroseismic and gyrochronological ages for 659 HWO target stars, finding that only ~5% have asteroseismic ages and ~20% have gyrochronal ages.
citing papers explorer
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The Maunder Model and Catalog: Stellar Rotation, Bimodal Activity, and Magnetic Braking in Kepler Main-Sequence Stars
A hybrid self-supervised and consensus-supervised model yields calibrated rotation periods for 148,746 Kepler main-sequence stars and identifies bimodal signals where the longer mode is the true rotation.
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Modeling Rotation in the Old, Cold Domain: Implications on Gyrochronology and the Stellar Magnetic Wind
Old field stars spin down faster at low masses and slower at high masses than standard Rossby-scaled wind models predict, pointing to a mass-dependent stellar wind term or a bias in the kinematic ages themselves.
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Anchoring Stellar Age Indicators: A Cross-Calibration of [C/N] and Gyrochronology Ages via the Age-Velocity-Dispersion Relation
After anchoring gyrochronology and [C/N] ages to the same age-velocity-dispersion relation, the two methods give consistent ages once small offsets are subtracted, and their valid parameter spaces are mapped.
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New Rotation Periods from the Kepler Bonus Background Light Curves
A neural network applied to de-blended Kepler light curves yields 32,159 rotation periods, 9,811 of them new, but up to 63% of periodic background light curves remain blended with foreground sources.
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Quantifying the Limits of TESS Stellar Rotation Measurements with the K2-TESS Overlap
TESS stellar rotation periods are accurate for most stars spinning faster than once per 10 days, but become unreliable beyond about 12 days, and stitching multiple sectors does not fix the problem.
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Star-crossed Clusters: Asteroseismic Ages for Individual Stars are in Tension with the Ages of their Host Clusters
Asteroseismic ages of individual red giants in the same cluster scatter far more than expected and are systematically offset from isochrone-based cluster ages across all seven clusters studied.
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Long rotation period main-sequence stars from Kepler SAP light curves
A pipeline using Butterworth filtering and Lomb-Scargle periodograms on Kepler SAP light curves yields over 1,000 main-sequence rotators with periods above 30 days, including 165 new ones.
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Towards precise stellar ages: combining isochrone fitting with empirical gyrochronology
Combining rotation-based and evolution-based age estimates in one Bayesian model improves stellar age precision by up to a factor of three for FGK dwarfs, and ships as the open-source package stardate.
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Surface rotation and photometric activity for Kepler targets I. M and K main-sequence stars
A Kepler-data catalog of surface rotation periods and photometric activity for about 15,900 M and K main-sequence stars, including about 4,431 new rotation periods and cross-checks against the McQuillan et al. catalog.
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The HAges Catalog: Stellar Ages for High Priority HWO Target Stars
The HAges catalog compiles published asteroseismic and gyrochronological ages for 659 HWO target stars, finding that only ~5% have asteroseismic ages and ~20% have gyrochronal ages.