856 papers
This paper presents a fully forward-modelled Bayesian framework for calibrating Milky Way Cepheids using Gaia EDR3 data, demonstrating that explicitly accounting for Galactic geometry and survey selection effects is essential to avoid biases in the period-luminosity relation and robustly support the local distance-ladder determination of .
This study utilizes updated stellar models incorporating dust-driven mass loss to demonstrate that the mass lost by low-mass stars during the RGB phase is the critical factor in calibrating the AGB-to-RGB star ratio, thereby enabling the reconstruction of dwarf galaxy star formation histories with an uncertainty of approximately 1 Gyr.
Based on five years of spectropolarimetric monitoring, this study reports the first direct measurement of Polaris's rotation period (100.29 days) and reveals a remarkably stable surface magnetic field, providing critical constraints for understanding the star's unusual evolutionary history and potential merger origin.
This paper utilizes a modified conveyor belt model to demonstrate that standard surface density thresholds can misclassify early-stage high-mass clumps, revealing that the total cumulative mass accreted over time is the critical factor in distinguishing high-mass from intermediate-mass star-forming regions.
Based on HST and JWST observations of thousands of young star clusters in four nearby galaxies, this study reveals that the timescale for clusters to emerge from their natal gas is strongly correlated with stellar mass, with massive clusters dispersing their surroundings more rapidly, a finding that challenges current simulations and has significant implications for galactic feedback and planet formation.
This paper presents the first JWST/NIRSpec multiplex spectroscopy results from the FEAST program in NGC 628, demonstrating the telescope's ability to resolve the spectral properties of emerging young star clusters and their surrounding interstellar medium, thereby revealing a photoionization-dominated feedback regime driven by massive stars before supernovae occur.
This study utilizes multi-spacecraft observations and numerical simulations to demonstrate that the widespread 28 October 2021 relativistic solar energetic particle event was governed by a narrow injection region coupled with efficient cross-field diffusion, resulting in parallel mean free paths within the Palmer consensus range and perpendicular mean free paths of approximately 1–10% of the parallel values.
This paper presents a trade study for the Nancy Grace Roman Space Telescope, recommending an ultra-deep survey covering at least 0.56 square degrees with all six filters to optimize the measurement of the high-redshift (z~6–9) UV luminosity function and significantly reduce uncertainties in rest-UV luminosity density compared to existing JWST programs.
This paper presents the first systematic study of neutrino emissions from massive stars (10–40 ) spanning pre-supernova evolution to the early core-collapse phase, revealing that neutrino luminosities and spectra strongly correlate with progenitor compactness and core mass, thereby offering a robust method to infer internal stellar structure through joint observational analysis.
This study utilizes the Jiutian-300 simulation and L-Galaxies 2020 model to demonstrate that incorporating realistic, time-varying star formation histories—specifically those dependent on stellar age and redshift—significantly alters the topology, timing, and thermal state of the Intergalactic Medium during the Epoch of Reionization, thereby producing distinct 21-cm global signals and power spectra compared to models assuming constant star formation rates.
This paper introduces *silmarel*, the first software package designed to jointly reconstruct gravitational wave sources and their lensing galaxies by integrating data from gravitational wave detectors with electromagnetic surveys like Euclid and Hubble, thereby enabling the identification of lensed binary black hole events in the era of multi-messenger astronomy.
This paper presents a novel analytical model demonstrating that direct mass transfer via a stream is inefficient at spinning up an accretor to critical rotation, thereby allowing the star to gain significant mass while remaining stable, with mass conservation being highest in tighter orbits or systems with faster donor rotation.
This paper presents a hybrid active anomaly detection framework that integrates a supervised supernova probability score into the PineForest algorithm to significantly enhance the discovery efficiency of supernovae and other rare transients in large-scale time-domain surveys like the Zwicky Transient Facility.
N-body simulations demonstrate that Saturn's growth and migration are inefficient at scattering CM-like planetesimals into the Uranus-Neptune region due to gas drag and migration effects, resulting in negligible contamination of the distant CI reservoir and confirming the isolation of carbonaceous asteroid populations.
The ODIN survey combines wide-field Ly imaging with extensive spectroscopy to confirm and reconstruct the 3D structures of six massive protoclusters at cosmic noon ( and $3.1$), revealing that galaxies in these dense cores exhibit enhanced emission and early quenching, with environmental effects appearing stronger at higher redshifts.
This paper proposes that fast X-ray transients (FXTs) are produced by off-axis jet-cocoons from long gamma-ray bursts, demonstrating through numerical simulations that viewing angles of 10°–20° naturally explain the observed X-ray luminosity, duration, and soft spectra, while also predicting a simultaneous UV flash and a subsequent bright optical plateau preceding the supernova emission.
This study utilizes GALEX UV and WISE infrared imaging to analyze star formation in the dwarf galaxy DDO 43, revealing a general correlation between UV and IR fluxes indicative of coherent star formation while identifying specific regions with elevated IR but low UV emission that suggest localized, dust-obscured star formation.
This study utilizes multi-view observations and a revised cone model to characterize the three-dimensional geometry and kinematics of two successive coronal mass ejections from active region 12994, revealing their large angular extents and propagation paths toward Mercury to improve future impact predictions for solar planets.
By applying point-likelihood analysis to the spin periods of 38 magnetars and X-ray dim isolated neutron stars, this study reveals a significant clustering near 12–15 seconds that supports a common physical mechanism, likely involving magnetic field decay or fallback disc torques, which terminates the observable phase of these neutron stars at a specific final period.
The SpIRIT CubeSat's HERMES instrument successfully demonstrated millisecond-level X-ray timing capabilities by detecting the double-peaked pulse profile of the Crab pulsar, proving that compact CubeSat payloads can achieve high-energy observational performance previously reserved for flagship space observatories.