371 papers
This study identifies two RQG-like massive quiescent galaxies in the FLARES simulations, revealing that AGN-driven feedback drives their rapid quenching and super-solar metallicity while suggesting that systematic errors and enhanced AGN accretion rates are needed to reconcile observed and predicted number densities.
This study utilizes Self-Organizing Maps on VISTA near- and mid-infrared images of approximately 10,000 Young Stellar Objects in the Orion complex to create a non-theoretical, data-driven grid of morphological prototypes and probabilistic maps linking these morphologies to evolutionary stages, thereby establishing a foundation for a novel spectro-morphological classification scheme.
This paper presents and validates a non-explosive pre-supernova (NEPS) feedback module within the COLIBRE galaxy formation model, demonstrating that incorporating momentum injection and photoheating from young massive stars effectively regulates star formation, improves numerical convergence, and synergistically enhances the efficacy of subsequent supernova feedback.
Analysis of deep JWST spectra of the luminous Little Red Dot FRESCO-GN-9771 reveals that its distinctive spectral features, including strong Balmer breaks, collisional Balmer lines with scattering wings, and optical [Fe II] emission, originate from a dense, warm, outflowing gas layer that obscures the central black hole and suggests its mass is significantly lower than virial estimates indicate.
This paper presents the discovery of 289 high-redshift () Lyman-break galaxies using UltraVISTA and Euclid imaging in the COSMOS field, which are used to constrain the rest-frame UV luminosity function and demonstrate the synergistic potential of combining these datasets for identifying extreme sources in the Epoch of Reionization.
Using the IllustrisTNG cosmological simulations, this study reveals that counterrotating stellar disks are rare but diverse structures in Milky Way-mass galaxies, primarily formed through the accretion of misaligned gas that triggers bursty in-situ star formation, thereby serving as valuable tracers of a galaxy's accretion history.
This study demonstrates that cross-correlating CONCERTO-like millimeter-wave line-intensity mapping data with galaxy redshift surveys can accurately recover the cosmic CO excitation ladder and molecular gas density up to , although the specific CONCERTO experiment lacks the sensitivity to detect the required cross-power spectra.
This study demonstrates that optically thick winds in very massive stars significantly enhance mass loss, thereby suppressing the formation of intermediate-mass black holes via direct collapse at metallicities above , a threshold one order of magnitude lower than previously predicted.
The paper argues that cool supergiants at extremely low metallicity are limited by a constant upper luminosity due to a metallicity-independent late-phase mass loss mechanism that strips hydrogen layers, allowing massive stars to evolve into hot, helium-rich objects capable of producing hard ionizing radiation and contributing to early Universe nitrogen enrichment.
By combining new and existing XRISM/Resolve observations to map the Perseus galaxy cluster out to ~0.7, this study reveals high velocity dispersions and a dipole-like bulk flow indicative of merger-driven turbulence and rotation, constraining the viewing angle and suggesting that turbulent cascade plays a significant role in converting merger energy within the intracluster medium.
Using JWST NIRCam grism spectroscopy of 316 H-selected galaxies behind the Abell 2744 cluster, this study reveals that the star-forming main sequence at has a significantly shallower slope and potentially mass-dependent scatter than predicted by simulations, suggesting potential issues with SFR calibrations, the presence of quenched low-mass galaxies, or underestimated dust attenuation.
This paper applies a statistical formalism to LIGO/Virgo/KAGRA gravitational wave and AGN flare data, finding that while less than 3% of binary black hole mergers likely produce observable electromagnetic counterparts, up to 40% could still originate in AGN disks, though individual coincidences are more likely due to background flares than true associations.
This study utilizes deep learning to analyze HSC images up to and finds that galactic bars contribute to fuelling low-to-moderate luminosity Active Galactic Nuclei, whereas major mergers remain the primary driver for the most powerful accretion events.
By using CRIRES+ near-infrared spectroscopy to detect strong CO absorption but no H in the edge-on debris disks of HD 110058 and HD 131488, the study establishes high CO/H ratios that rule out a primordial origin and strongly support an exocometary source for the gas.
This paper introduces ARTEMIDE, an open-source Mask R-CNN framework that successfully automates the detection and segmentation of strong gravitational lensing arcs in Euclid's Quick Data Release, achieving high precision and recall while demonstrating the viability of deep learning for analyzing massive wide-field survey datasets.
This study uses high-resolution, star-by-star cosmological simulations of an ultra-faint dwarf galaxy to demonstrate that while Type Ia supernova assumptions primarily dictate mean chemical abundances, massive star yields and stochastic sampling significantly shape abundance trends and limit the interpretability of single galaxies, underscoring the need to account for both systematic and statistical uncertainties in chemical enrichment modeling.
This paper introduces Synference, a fast and flexible Python framework that utilizes simulation-based inference to efficiently infer galaxy physical properties and photometric redshifts from multi-band photometry, achieving a ~1700-fold speedup over traditional methods while maintaining high accuracy and calibration.
This study demonstrates that the mass of a central supermassive black hole and a planet's distance from the galactic center critically determine exoplanet habitability by driving atmospheric heating, mass loss, and severe ozone depletion, particularly through energy-driven winds from active galactic nuclei.
Using ALMA observations of interstellar comet 3I/ATLAS, researchers detected distinct outgassing behaviors between methanol and hydrogen cyanide, revealing a remarkably high CHOH/HCN production rate ratio that ranks among the highest ever measured in comets and is surpassed only by the anomalous C/2016 R2.
This paper presents the first release of the Stellar Stream Legacy Survey (SSLS), which visually identifies accretion features around 730 nearby dwarf galaxies to establish a baseline frequency of 5.1% and highlight the observational challenges and theoretical needs in studying low-mass galaxy mergers.