348 papers
This paper utilizes JWST/NIRSpec stacked spectroscopy of 287 high-redshift Ly emitters to reveal that resonant scattering redistributes Ly photons to low-density outskirts where escape is more efficient, while simultaneously uncovering nitrogen-enhanced chemical enrichment and bursty feedback-driven gas flows that link Ly emission to the galaxies' ionizing photon budget.
This paper presents the largest statistical census from the HETDEX survey, bridging the gap between Lyman-alpha halos and blobs at cosmic noon by characterizing the population's properties and revealing that a significant majority of those with radio counterparts are extended sources, with the radio fraction increasing with Lyman-alpha size.
Using magnetohydrodynamic simulations, this study demonstrates that mega-parsec giant radio sources can form in dark matter halos of varying masses ($10^{13}10^{15}$ solar masses) with normal hot baryonic gas fractions, challenging the hypothesis that a low-density environment is a necessary condition for their formation.
Using MIGHTEE survey data across three fields, this study reveals that radio-AGN reside in increasingly massive dark matter haloes at lower redshifts with a duty cycle of 5–9%, suggesting that their enhanced clustering relative to non-active galaxies stems from either AGN feedback suppressing stellar growth or a preference for earlier-forming haloes.
Using new ASKAP/WALLABY HI observations, this study discovers a previously missed fourth dwarf galaxy member in the nearby ESO 179-013 system and reveals an extended neutral gas envelope that indicates a more complex interaction history than previously thought.
This paper establishes a tight relation between the baryonic mass and dynamical mass of extragalactic systems across nine orders of magnitude, revealing that the baryon fraction matches the cosmic value in massive clusters but decreases systematically in lower-mass systems according to a specific tanh-based scaling law.
The Galaxy UV Legacy Project (GULP) presents a new Hubble Space Telescope survey of 26 nearby galaxies that, through a detailed case study of NGC 4449, reveals a recent southwestward migration of star formation and demonstrates that intense UV radiation from massive stars destroys the dust grains responsible for the 2175 Å UV-bump.
This paper introduces PEACOCK, a unified Monte Carlo radiative transfer framework accelerated by deep learning, which analyzes 50 nearby star-forming galaxies to reveal that their multiphase galactic winds are kinematically coherent and driven by macroscopic turbulence rather than purely radial acceleration, while showing distinct kinematic structures between neutral hydrogen and metal ions.
By applying the PEACOCK multi-ion radiative transfer framework to 50 nearby star-forming galaxies, this study reveals that turbulence often dominates the kinetic energy budget of galactic winds and strengthens the coupling between stellar feedback and the circumgalactic medium, supporting a turbulence-regulated picture of multiphase outflows.
This paper analyzes a catalog of 6,594 high-quality solar twins from Gaia DR3 to construct an age distribution that reveals the Sun's likely radial migration from the inner disk, potentially linking this movement to enhanced star formation triggered by the epoch of Galactic bar formation.
This study demonstrates through simulations that the Large Magellanic Cloud's gravitational perturbations significantly reshape radially biased stellar haloes (like the Gaia Sausage-Enceladus) into triaxial structures, creating strong inner-halo overdensities such as the Virgo Overdensity and Hercules-Aquila Cloud via dynamical alignment rather than merger geometry, thereby revealing that previous models have underestimated LMC effects by neglecting high velocity anisotropy.
This paper presents a color calibration for the Tip of the Red Giant Branch (TRGB) in JWST F090W and F150W filters, establishing an absolute magnitude of mag for low-metallicity populations and deriving revised, slightly closer distances for 16 galaxies relative to the NGC 4258 maser anchor.
This study demonstrates that traditional and isophote-derived broadband morphological parameters lack the discriminatory power to distinguish between dwarf galaxy subtypes or from massive counterparts, suggesting that understanding dwarf galaxy evolution will require high-dimensional statistical analysis of large populations from upcoming surveys.
This paper proposes that an evolving intrinsic scatter and normalization in the supermassive black hole-bulge mass relation at high redshifts can reconcile the observed excess amplitude of the gravitational wave background with theoretical models while simultaneously explaining the existence of overmassive black holes in the early universe.
By analyzing X-ray selected AGN in the XXL and Stripe 82X surveys, this study finds that black hole mass, accretion rate, and luminosity show no significant correlation with large-scale dark matter halo environments, suggesting that AGN properties are primarily regulated by internal host-galaxy processes rather than external environmental factors.
Using DESI DR2 data and a mixture model approach, this study identifies 41 new member stars in the C-19 stellar stream, confirming its extremely metal-poor nature ([Fe/H] = -3.36) and high velocity dispersion (7.8 km/s) that challenges the conventional globular cluster progenitor hypothesis.
This study utilizes the MACER framework to demonstrate that in a disk galaxy, cold filaments condensing from the circumgalactic medium drive a positive correlation between star formation and AGN activity, while cumulative AGN feedback ultimately quenches the galaxy and paradoxically enhances peak star formation rates by recycling gas into massive cold filaments.
By combining X-ray and optical data for 241 AGN, this study reveals that obscuration is not solely determined by orientation but also by multi-scale gas and dust distributions, identifying distinct populations of X-ray absorbed broad-line AGN and X-ray unabsorbed narrow-line AGN that exhibit unique host galaxy properties and accretion behaviors.
This paper employs a semi-analytic two-component model to analyze the thermal evolution of the central star in the Pa 30 nebula, concluding that its observed properties are best explained by a core mass of 1.15–1.4 solar masses and a small hot envelope, supporting a scenario where SN 1181 resulted from the merger of O/Ne and C/O white dwarfs.
This study utilizes panchromatic photometry and the BEAST tool to characterize the massive main-sequence star population in the metal-poor dwarf galaxy Sextans A, identifying hundreds of candidates, quantifying OBe fractions and isolated stars, and predicting high Lyman continuum escape fractions to establish Sextans A as a benchmark for low-metallicity massive-star evolution and feedback.