The average dust attenuation law at 2<z<7 is empirically measured from stacked SEDs and matches the local starburst curve with R_V=3.98, a flatter UV slope, and no 2175A bump.
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JWST-SUSPENSE spectra of eight quiescent galaxies at z~1.2-2.2 reveal negative age gradients, flat [Fe/H], and positive [Mg/H] and [Mg/Fe] gradients, suggesting inside-out quenching with Mg-deficient cores.
Semi-resolved FASTAR models extend evolutionary synthesis predictions to capture stochastic IMF sampling that depends on the number of contributing stars.
Monte Carlo YMSC populations reproduce HGPS+LHAASO detections for five parameter sets (steep spectra, modest CR efficiencies) while strongly disfavouring Bohm diffusion.
New envelope binding energies derived from PARSEC stellar tracks alter compact binary merger rate densities by over an order of magnitude when used in population synthesis.
Simulations of 47 Tuc show hierarchical mergers and occasional surviving primordial seeds above the pair-instability gap produce retained black holes of 45-1100 solar masses with distinct spin distributions, favoring a dark-remnant population over a single massive IMBH while remaining consistent the
A coupled galaxy-cluster model shows that Milky Way globular clusters, many from satellite galaxies, form dynamically interacting black hole binaries whose merger rates increase with redshift up to z=5.
Simulations match observed outflow masses within 0.5 dex but underpredict velocities by an order of magnitude and show face-on galaxies 15-40% more likely to exhibit detectable outflows than edge-on systems.
MIST provides a new publicly available grid of solar-scaled stellar isochrones and evolutionary tracks computed self-consistently with MESA from pre-main sequence through advanced stages for masses 0.1-300 solar masses and metallicities -2 to 0.5.
Existing HeII emission-line diagnostics identify pure Pop III galaxies but fail for hybrid Pop III/Pop II systems, introducing spectral degeneracies that hide residual first stars.
New public mock catalogs of Milky Way white dwarf mergers show how rates of outcomes (AM CVn, R CrB stars, SNe Ia, neutron stars) vary with binary evolution assumptions.
An analytical model of galaxies evolving along the star-forming main sequence shows that episodic quiescence or late assembly is required to reproduce observed star formation histories and avoid over-massive galaxies today.
N-body simulations of ultra-faint dwarf galaxies without dark matter find a 3-billion-year quasi-stationary phase followed by mass segregation, with binaries causing substantial overestimates of velocity dispersion.
ELT/MICADO is projected to enable the first quantitative constraints on the dark cluster of stellar compact objects in the Galactic Center through variability and astrometric searches.
NGC 1427A shows a complex star formation history with young (~10 Myr) and intermediate-age (100-300 Myr) clusters that trace environmental processing during its orbit in the Fornax cluster.
Star formation model choice in galaxy simulations controls giant molecular cloud lifetimes, yielding 20-30 Myr with sink particles versus over 200 Myr with the gravo-thermo-turbulent prescription.
Nemesis couples global and local astrophysical simulations to match direct N-body results while scaling efficiently when cores exceed the number of planetary systems.
IllustrisTNG simulations link filament density to galaxy morphology trends across redshifts and predict that Roman's planned HLWAS survey needs greater depth to accurately map the z=1 cosmic web.
citing papers explorer
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A first empirical derivation of the average dust attenuation law at 2<z<7
The average dust attenuation law at 2<z<7 is empirically measured from stacked SEDs and matches the local starburst curve with R_V=3.98, a flatter UV slope, and no 2175A bump.
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Clues to inside-out quenching in quiescent galaxies at $1.2\lesssim z\lesssim2.2$: Age, Fe-, and Mg-abundance gradients from JWST-SUSPENSE
JWST-SUSPENSE spectra of eight quiescent galaxies at z~1.2-2.2 reveal negative age gradients, flat [Fe/H], and positive [Mg/H] and [Mg/Fe] gradients, suggesting inside-out quenching with Mg-deficient cores.
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FASTAR -- II. Semi-resolved evolutionary stellar population models
Semi-resolved FASTAR models extend evolutionary synthesis predictions to capture stochastic IMF sampling that depends on the number of contributing stars.
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Young Massive Star Clusters as TeV Emitters: Constraints from H.E.S.S. and LHAASO
Monte Carlo YMSC populations reproduce HGPS+LHAASO detections for five parameter sets (steep spectra, modest CR efficiencies) while strongly disfavouring Bohm diffusion.
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The impact of envelope binding energies on the merger rate density of binary compact objects
New envelope binding energies derived from PARSEC stellar tracks alter compact binary merger rate densities by over an order of magnitude when used in population synthesis.
-
Repopulating the pair-instability mass gap without sustained growth to massive IMBHs: the case of 47\,Tuc
Simulations of 47 Tuc show hierarchical mergers and occasional surviving primordial seeds above the pair-instability gap produce retained black holes of 45-1100 solar masses with distinct spin distributions, favoring a dark-remnant population over a single massive IMBH while remaining consistent the
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Milky Way Globular Clusters: Nurseries for Dynamically-Formed Binary Black Holes
A coupled galaxy-cluster model shows that Milky Way globular clusters, many from satellite galaxies, form dynamically interacting black hole binaries whose merger rates increase with redshift up to z=5.
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High-Redshift Galactic Outflows: Orientation Effects, Kinematics, and Metallicity in TNG50 and SERRA
Simulations match observed outflow masses within 0.5 dex but underpredict velocities by an order of magnitude and show face-on galaxies 15-40% more likely to exhibit detectable outflows than edge-on systems.
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MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
MIST provides a new publicly available grid of solar-scaled stellar isochrones and evolutionary tracks computed self-consistently with MESA from pre-main sequence through advanced stages for masses 0.1-300 solar masses and metallicities -2 to 0.5.
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On the detection of Population III galaxies: Emission Line Diagnostics for Hybrid Stellar Populations
Existing HeII emission-line diagnostics identify pure Pop III galaxies but fail for hybrid Pop III/Pop II systems, introducing spectral degeneracies that hide residual first stars.
-
The diverse outcomes of binary white dwarf mergers and connections to Galactic LISA sources
New public mock catalogs of Milky Way white dwarf mergers show how rates of outcomes (AM CVn, R CrB stars, SNe Ia, neutron stars) vary with binary evolution assumptions.
-
Built to Rest: The Evolving Star-Forming Main Sequence Requires Episodic Quiescence or Late Assembly
An analytical model of galaxies evolving along the star-forming main sequence shows that episodic quiescence or late assembly is required to reproduce observed star formation histories and avoid over-massive galaxies today.
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The long-term evolution of Ultra Faint Dwarf Galaxies and observational implications
N-body simulations of ultra-faint dwarf galaxies without dark matter find a 3-billion-year quasi-stationary phase followed by mass segregation, with binaries causing substantial overestimates of velocity dispersion.
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Constraining the Galactic Center Dark Cluster with ELT/MICADO Observations
ELT/MICADO is projected to enable the first quantitative constraints on the dark cluster of stellar compact objects in the Galactic Center through variability and astrometric searches.
-
The complex history of NGC 1427A revealed by its star clusters and star formation history
NGC 1427A shows a complex star formation history with young (~10 Myr) and intermediate-age (100-300 Myr) clusters that trace environmental processing during its orbit in the Fornax cluster.
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From short-lived to long-lived clouds: impact of star formation models on giant molecular cloud evolution in simulations of an NGC 300-like galaxy
Star formation model choice in galaxy simulations controls giant molecular cloud lifetimes, yielding 20-30 Myr with sink particles versus over 200 Myr with the gravo-thermo-turbulent prescription.
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Nemesis: A Multi-Scale, Multi-Physics Algorithm for Astrophysics
Nemesis couples global and local astrophysical simulations to match direct N-body results while scaling efficiently when cores exceed the number of planetary systems.
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Impact of Cosmic Filaments on Galaxy Morphological Evolution and Predictions of Early Cosmic Web Structure for Roman
IllustrisTNG simulations link filament density to galaxy morphology trends across redshifts and predict that Roman's planned HLWAS survey needs greater depth to accurately map the z=1 cosmic web.