JWST nebular spectra detect cooling ~400 K carbonaceous dust emission in normal SN Ia 2023qov at +276 and +363 days, modeled as pre-existing circumstellar dust with mass ~10^{-4} M_sun located within ~1 light year.
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13 Pith papers cite this work, alongside 956 external citations. Polarity classification is still indexing.
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Milky Way abundance trends act as effective empirical proxies for nucleosynthetic yields, recovering alpha and Fe-peak abundances in quiescent galaxies with 0.05 dex median offset versus 0.23 dex for theory, indicating largely universal yields.
NEFERTITI simulations show that the Milky Way's most metal-poor stars largely come from a handful of accreted massive dwarf galaxies, while reproducing the JWST Hebe galaxy at z~11 as a pure Population III system.
New VLT observations of He I* absorbers yield a primordial ³He/⁴He ratio of (1.15^{+0.24}_{-0.21})×10^{-4} consistent with standard Big Bang nucleosynthesis, plus an updated stellar yield scaling factor.
Bulge Fossil Fragments are estimated to generate 15-250 times more binary black hole mergers than typical globular clusters, marking them as a new class of gravitational wave sources.
Spectra of the western eROSITA bubbles reveal two uniform components at 0.60 keV and 0.21 keV with sub-solar abundances, plus a geometrical model constraining horizontal size to ~6 kpc but leaving vertical extent uncertain.
New observations of high-redshift DLAs show that the metallicity of neutral hydrogen gas drops sharply at z approximately 5.
Jet-driven aspherical explosions improve fits to Perseus Cluster abundances and are necessary to explain zinc enrichment and other elemental trends in galactic stars and chemical evolution models.
New CCSN yield tables at varying metallicities are inserted into galactic chemical evolution models and tuned to reproduce the Si-group and Fe-group abundances measured by Hitomi in the Perseus Cluster.
Interstellar objects may contribute enough baryonic mass to reduce the local dark matter halo density to 0.24 GeV/cm³.
N-body simulations show massive stars in TCCA clusters rapidly acquire triple or higher multiples and local density enhancements via dynamics, with multiplicity trends and shallower N_* profiles than competitive accretion models, matching AFGL 5180 better.
A metallicity- and SFR-dependent galaxy-wide IMF in semi-analytical models reproduces the mass-metallicity relation and quenched ellipticals more accurately than constant-IMF models, with self-regulation set by gas accretion rates near the Hubble constant.
Intermediate-mass black holes acting as permanent matter sinks, combined with updated cosmic star formation rates and primordial baryon accretion, reduce the overpredicted CNO abundances from Population III stars to match observations in z~3-6 quasar absorption systems.
citing papers explorer
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JWST Nebular Spectroscopy of SN 2023qov: Circumstellar Dust Emission in a Normal Type Ia Supernova
JWST nebular spectra detect cooling ~400 K carbonaceous dust emission in normal SN Ia 2023qov at +276 and +363 days, modeled as pre-existing circumstellar dust with mass ~10^{-4} M_sun located within ~1 light year.
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Are Nucleosynthetic Yields Universal? Interpreting the Multi-Elemental Abundances of Quiescent Galaxies over Cosmic Time Using Milky Way Stars
Milky Way abundance trends act as effective empirical proxies for nucleosynthetic yields, recovering alpha and Fe-peak abundances in quiescent galaxies with 0.05 dex median offset versus 0.23 dex for theory, indicating largely universal yields.
-
NEFERTITI: Linking early galaxy formation to the assembly of the Milky Way
NEFERTITI simulations show that the Milky Way's most metal-poor stars largely come from a handful of accreted massive dwarf galaxies, while reproducing the JWST Hebe galaxy at z~11 as a pure Population III system.
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Towards a measurement of the primordial helium isotope ratio
New VLT observations of He I* absorbers yield a primordial ³He/⁴He ratio of (1.15^{+0.24}_{-0.21})×10^{-4} consistent with standard Big Bang nucleosynthesis, plus an updated stellar yield scaling factor.
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Bulge Fossil Fragments as a new population of factories of gravitational wave sources in the Galaxy
Bulge Fossil Fragments are estimated to generate 15-250 times more binary black hole mergers than typical globular clusters, marking them as a new class of gravitational wave sources.
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The SRG/eROSITA diffuse soft X-ray background II. spectra and morphology of the eROSITA bubbles in the western Galactic hemisphere
Spectra of the western eROSITA bubbles reveal two uniform components at 0.60 keV and 0.21 keV with sub-solar abundances, plus a geometrical model constraining horizontal size to ~6 kpc but leaving vertical extent uncertain.
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The Qz5 Survey (II): Metallicity Evolution of Damped Ly{\alpha} Systems Out to z$\sim$5
New observations of high-redshift DLAs show that the metallicity of neutral hydrogen gas drops sharply at z approximately 5.
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Revisiting the Perseus Cluster III: Role of Aspherical Explosions on its Chemical Composition and Extension to Metal-Poor Stars and Galaxies
Jet-driven aspherical explosions improve fits to Perseus Cluster abundances and are necessary to explain zinc enrichment and other elemental trends in galactic stars and chemical evolution models.
-
Revisiting the Perseus Cluster II: Metallicity-Dependence of Massive Stars and Chemical Enrichment History
New CCSN yield tables at varying metallicities are inserted into galactic chemical evolution models and tuned to reproduce the Si-group and Fe-group abundances measured by Hitomi in the Perseus Cluster.
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Contribution of interstellar objects to local dark matter density
Interstellar objects may contribute enough baryonic mass to reduce the local dark matter halo density to 0.24 GeV/cm³.
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Star cluster formation from turbulent clumps. V. Stellar clustering around massive stars
N-body simulations show massive stars in TCCA clusters rapidly acquire triple or higher multiples and local density enhancements via dynamics, with multiplicity trends and shallower N_* profiles than competitive accretion models, matching AFGL 5180 better.
-
Self-regulated galaxy evolution within a self-consistently varying galaxy-wide IMF
A metallicity- and SFR-dependent galaxy-wide IMF in semi-analytical models reproduces the mass-metallicity relation and quenched ellipticals more accurately than constant-IMF models, with self-regulation set by gas accretion rates near the Hubble constant.
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On the relative CNO underabundance in quasar absorption systems at $z \sim 3$ arising from Population III enrichment and attenuation by intermediate-mass black holes and primordial baryon accretion
Intermediate-mass black holes acting as permanent matter sinks, combined with updated cosmic star formation rates and primordial baryon accretion, reduce the overpredicted CNO abundances from Population III stars to match observations in z~3-6 quasar absorption systems.