1091 papers
This study evaluates three different Extreme ultraviolet Imaging Spectrometer (EIS) line pair diagnostics for measuring the First Ionisation Potential (FIP) bias in the solar atmosphere, demonstrating that while signal-to-noise cutoffs influence the distribution's high-value tail, the median FIP bias remains stable, thereby highlighting the need for a nuanced approach rather than a one-size-fits-all methodology.
This study characterizes the stellar content and star formation activity in the IRAS 18456-0223 region by identifying 89 young stellar objects with masses up to 7.2 solar masses and ages up to 4 Myr, analyzing their clustering properties, variability, and association with cold, dense filaments using multiwavelength data and spectroscopy.
This study employs unsupervised machine learning clustering on multiwavelength data from the GAMA, EMU, and WISE surveys to quantify the fractional contributions of star formation and active galactic nuclei to galaxy energy budgets, ultimately establishing a novel, highly reliable three-dimensional IR-radio diagnostic scheme that moves beyond binary classifications to characterize galaxies as composites of multiple emission processes.
This paper introduces a unified integral framework based on the continuity equation that generalizes the Tremaine-Weinberg method to measure local pattern speeds, demonstrating through TNG50 simulations that it robustly recovers both global and radially varying rotation profiles while distinguishing between bars and spirals without relying on rigid geometric approximations.
This paper presents the first release of the ULTIMATE-deblending project, a comprehensive 50-band UV-to-MIR photometric catalog for the JWST/PRIMER survey that integrates space- and ground-based data to significantly improve the accuracy of photometric redshifts and enable mass-complete studies of early-universe galaxy formation.
Based on spectroscopic and photometric observations, this study characterizes HD 188101 as a spotted, weakly magnetic B9 main-sequence star exhibiting abundance anomalies typical of chemically peculiar He-weak SiTiSr stars, including overabundances of Si, Ti, and Sr, a helium deficiency, and phase-dependent spectral line variations.
This paper proposes that hydrodynamic outflows driven by hydrogen recombination in the extended proto-lunar disk atmosphere, distinct from Earth's compact carbon-dominated atmosphere, effectively removed volatile elements from the Moon's precursor material, thereby explaining the observed volatile depletion in lunar rocks relative to Earth.
This paper reports that one year after launch, the SVOM satellite's on-board Microchannel X-ray Telescope has successfully demonstrated its ability to localize gamma-ray burst afterglows within the required 2 arcminute uncertainty with an average positional accuracy of 40 arcseconds, enabling rapid ground dissemination for multi-wavelength follow-up observations.
This study analyzes four years of millimetre variability data from the GASTON-GP survey of massive protostellar objects and reports no robust detections of variable protostars, a null result attributed to observational limitations and the absence of extreme luminosity bursts during the monitoring period.
This paper reviews the current status of nuclear physics in X-ray bursts by integrating new experimental and theoretical reaction rates to update the JINA REACLIB database and refine models of burst light curves and nuclear ash composition.
This study presents the first definitive eight-sigma detection of the C3 molecule in Titan's atmosphere using ultra-high-resolution VLT-ESPRESSO observations, confirming a column density consistent with photochemical models and demonstrating the efficacy of exoplanet research techniques for Solar System targets.
This paper presents probabilistic predictions for trans-Neptunian binary mutual events through the 2030s by combining high-precision non-Keplerian orbit solutions with a Bayesian framework to generate observable distributions for five specific systems, thereby facilitating better planning and rapid community response to these rare opportunities.
By analyzing radio observations of 11 tidal disruption event hosts, this study introduces a new methodology that reveals quiescent galaxies possess sub-parsec circumnuclear density profiles consistent with simple Bondi accretion flows, thereby enabling the first direct constraints on gas distributions and accretion rates within the Bondi spheres of previously quiescent supermassive black holes.
This study reports a surprising, verified reversal in the expected trend of electron temperature within metal-rich star-forming regions, where temperatures unexpectedly increase at high metallicities, a phenomenon that challenges the fundamental principles of the direct method for metallicity measurement.
This paper introduces TILARA, a novel template-independent, line-by-line algorithm for deriving precise radial velocities that effectively mitigates biases from reference spectra and demonstrates performance comparable to existing methods when applied to ESPRESSO observations of the Sun-like star HD 102365.
This paper presents a fully Bayesian reanalysis of DESI DR2 data combined with CMB and supernovae, demonstrating that while frequentist methods suggest strong evidence for dynamical dark energy, Bayesian model selection largely favors the standard CDM model once calibration errors in the DES-SN5YR supernova data are corrected, revealing that the apparent tension was driven by systematic errors rather than new physics.
Using the FAST telescope, this study of 147 nearby low-power radio sources reveals a HI absorption detection rate dominated by rotating gas disks, while identifying a correlation between radio power and outflow-driven kinematics that differs from patterns observed in higher-power sources.
This paper investigates the cosmological viability of a specific gravity model by constraining its parameters using MCMC simulations on combined observational Hubble, supernova, and large-scale structure datasets, ultimately comparing its ability to explain late-time accelerated expansion and cosmic structure growth against the standard CDM model.
By cross-correlating cosmic shear, thermal Sunyaev-Zel'dovich, and X-ray data, this study develops a physical model that jointly constrains the spatial distribution and thermodynamic properties of hot gas while highlighting the necessity of accounting for X-ray AGN contamination and non-thermal pressure support to resolve parameter tensions.
Using deep JWST data, researchers discovered 36 massive ancient globular cluster candidates within the high-redshift quiescent galaxy "The Relic," providing direct evidence for both early in-situ formation and subsequent accretion events that link high-z cluster populations to local stellar systems.