Tag: Astronomy and Astrophysical Research
Supermassive stars may match JWST little red dot spectra
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in AstrophysicsSupermassive star models reproduce spectral signatures of JWST little red dots, suggesting these compact sources may be progenitors of the first supermassive black holes.
RUBIES finds many massive quiescent galaxies at 2 < z < 5
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in AstrophysicsSpectroscopic observations confirm that massive quiescent galaxies were surprisingly common at redshifts 2-5, challenging galaxy formation simulations.
Milky Way circular velocity measured from stellar abundances
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in AstrophysicsA new data-driven method measures the Milky Way’s circular velocity using element abundance gradients, deriving rotation parameters at the solar radius.
SLAM estimates stellar parameters for BOSS M dwarfs
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in AstronomyStellar parameters for SDSS-V M dwarfs derived using data-driven support vector regression on BOSS spectra, validated against multiple benchmarks with quantified systematic offsets.
Three ultra-faint Milky Way satellite candidates identified
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in AstronomyThree ultra-faint Milky Way satellites identified in DELVE survey data, including the faintest known satellite in the outer halo and an ambiguous compact system.
Cored stellar systems can remain stable in cuspy dark matter halos
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in AstrophysicsSimulations demonstrate that cored stellar systems remain stable within cuspy dark matter halos over Hubble timescales, refuting recent claims that such configurations would falsify cold dark matter.
Vertical gas flows are widespread in protoplanetary disks
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in AstrophysicsStudy of vertical gas flows in 14 protoplanetary disks using ALMA observations reveals ubiquitous vertical motions driven by diverse physical mechanisms during planet formation.
TransFit-CSM models interaction-powered transients with consistent shock diffusion
Fast, physically consistent framework for modeling interaction-powered transients through self-consistent ejecta-CSM shock and radiative diffusion coupling.
