JWST/NIRCam imaging and Keck/MOSDEF spectroscopy identify COSMOS-74706 as an unlensed barred spiral galaxy at z_spec=3.159, with the bar confirmed via residuals, ellipse fitting, and Fourier modes.
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@doi [ ] 10.1111/j.1365-2966.2009.15167.x, http://adsabs.harvard.edu/abs/2009MNRAS.398..607V 398
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- method 4), and different dust conditions (Section 6.2.5). 3.1 The IllustrisTNG50 simulation Our emission-line predictions are based onIllustrisTNG50(here- afterTNG50), the highest-resolution volume of the publicly avail- ableIllustrisTNGsuite of cosmological simulations (Pillepich et al. 2018; Nelson et al. 2019a).TNG50was evolved with the moving-mesh codeArepo(Springel 2010) in a(51.7 cMpc) 3 vol- ume from𝑧=127to 0, with dark-matter and gas mass resolu- tions of𝑚 DM =4.5×10 5 M⊙ and𝑚 gas =8×10 4 M⊙, r
- dataset dashed line, which showcases the improvement in the quality of spectra with JWST/MIRI-MRS. The MRS spectra of IR20551 shows a combination of narrow lines,PAHemissionandsilicateabsorptionfeaturesat∼6.2𝜇mand∼9.7𝜇m.Thebottomfourpanelsshowthesamespectraasthetoprightpanel,butzoomed in on four different regions of the MRS spectra and the strong emission line features labelled. Rotational transitions of H2 (S(1)-S(8)) are detected, along with PAH and low-ionisation lines such as [Neii]. High ionisation
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First JWST spectroscopy of GJ 504 b detects multiple molecules, retrieves atmospheric parameters including super-solar metallicity, and finds tentative support for planet-like formation.
TOI-837 b has a true obliquity of 25.9+7.5-6.3 deg, the first planet younger than 100 Myr with accessible ψ incompatible with an aligned orbit, favoring primordial disc torque followed by disc-driven migration.
Detection of a variable stratified UFO with velocities 0.1c and 0.3c, extreme mass outflow rates, and kinetic powers of 1-10% of bolometric luminosity in quasar WISSH13 at z=3.294.
First 2D Lyα RHD simulations show Lyman-alpha radiation pressure yields radiative forces of 2-16 times L_bol/c and force multipliers of 10-60, dominating other pre-supernova feedback in metal-poor environments.
SOFIA observations provide the first experimental magnetic-dipole hyperfine constants for [13C II] and refined centroid frequency using astronomical data.
TopoFisher optimizes trainable filtrations, vectorizations, and compressors in persistent homology to maximize Fisher information, yielding higher information than fixed cosmological summaries and approaching neural baselines with far fewer parameters while generalizing better under simulator shifts
Dust grain size distributions evolve from large-grain dominated at high redshift to MRN-like at low redshift, driven primarily by shattering and ISM accretion after stars supply initial large grains, reproducing z=0 dust masses and Milky Way extinction properties.
First public GPU-accelerated pulse-profile modeling code for X-ray millisecond pulsars that delivers 10^3–10^4 speedups to 2–5 ms per evaluation at 10^{-3} relative accuracy and removes an interpolation bias in atmosphere tables.
The eRASS1 data release catalogs nearly 930,000 X-ray sources from the first six months of the eROSITA survey, increasing known sources by over 60% and resolving 20% of the 1-2 keV cosmic X-ray background.
EHT data show a 51.8 microarcsecond ring around Sgr A* consistent with the shadow of a 4 million solar mass Kerr black hole viewed at moderate inclination.
Binary interactions and cluster dynamics boost PISN rates by up to 3x versus single stars, enabling constraints on stellar-wind mass loss and galaxy metallicity distributions.
SMaSH+ survey data yields the first observationally grounded distributions of key parameters for 26 hierarchical massive triples, dominated by tight inner binaries and wider tertiaries with no strong mass-separation correlations.
Simulation study proposes that weakly rotating, gas-rich cosmic wallflowers at high redshift are natural proto-globular cluster candidates based on kinematics and densities.
Derives analytical solutions and fitting formulae for Lyα spectra under cylindrical geometry including recoil and velocity gradients, validated against Monte Carlo simulations.
First use of the learned harmonic mean estimator for Bayesian model selection across circular/eccentric, white-noise/GP, and trend variants in radial velocity exoplanet analyses.
A triple-star channel with two common envelope evolution phases produces merging black hole binaries with positive average χ_eff and a tail of negative values.
An MHD-informed model with self-consistent radial profiles applied to ten z >= 2.5 quasar jets yields higher jet powers than one-zone models, favors electron distributions tied to gas pressure, and finds low magnetization with no clear redshift trend in Lorentz factor.
First statistically significant detection of dayside silicate clouds on a Neptunian-mass exoplanet, with CO and CO2 detections and C/O ratio of 0.984 from JWST spectra.
Asteroseismic masses average 1.29 Msun for Ba dwarfs versus 1.96 Msun for Ba giants, supporting main-sequence accretion evolution from dwarfs to giants, though models fail to match the observed [hs/ls] ratio.
Anisotropic quenching is detected at the highest redshift yet and linked to preprocessing dominating over intrahalo effects by ~20% along the major axis in a delay-then-rapid quenching model informed by cluster accretion histories.
Transit spectrum of TOI-6894b indicates 3-10x solar metallicity with solar C/O, N/O, and S/O ratios, similar to Jupiter and Saturn.
JWST/MIRI detects [Ne V] 14.3 micron emission from O-star winds in 5 of 22 observed stars, enabling wind speed and mass-loss rate estimates even in weak-wind regimes.
Time-resolved XRISM spectroscopy of NGC 4395 reveals variable inner-disk Fe Kα emission interpreted as Lense-Thirring precession, favoring low black hole mass (~9e3 solar masses) and moderate spin (a≳0.6).
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Diverse Histories and Common Origins of Nitrogen-enhanced JWST Galaxies
76 N/O-enhanced galaxies at 4<z<8.5 are observed shortly after starbursts, either in the WR enrichment phase within 10 Myr or the AGB phase after 30-40 Myr following outflows.
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MEGA and SMILES Find Fewer Dusty Galaxies than Expected at Cosmic Noon
JWST MIRI observations of 634 galaxies at 0.2<z<2 yield IR luminosity functions with faint-end slope α≈0.147, implying lower dust-obscured SFRD than previous ALMA/Herschel/Spitzer studies.
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A comprehensive Rossiter-Mclaughlin Modelling Framework in TLCM: Application to HD 2685 $=$ TOI-135 system
Updated RM modeling framework in TLCM validated on nine systems and applied to TOI-135 to measure sky-projected obliquity λ = 55.6° with ~11° uncertainties.