A CNN with attention and shared latent space recovers SFHs and metallicities from spectro-photometric data with ~0.12 dex age and ~0.03 dex metallicity dispersion while running thousands of times faster than full spectral fitting.
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Quiescent fractions reach ~50% in hot-accretion high-z groups and ~0% in cold-accretion ones, supporting accretion-mode driven quenching via inside-out starvation.
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.
Spatially resolved JWST observations of lensed LAE HCM 6A at z=6.57 reveal Lyα escaping from a dust-cleared central clump in the youngest region, with age-dependent Calzetti-like attenuation curves.
Spectral fitting of The Cliff LRD with Bagpipes yields a BH*-like solution with a low-mass metal-poor host, moderate dust, smooth star formation history, and high BH-to-stellar mass ratio.
Over 100 caustic-crossing stellar events identified in the Dragon galaxy at z≈0.725 with JWST data yield a stellar luminosity function slope β=2.18 and confirm parity asymmetry.
High-resolution molecular gas observations show that spiral arms and bars in z~1.5 disk galaxies drive substantial radial inflows at rates matching star formation, linking morphology directly to gas transport.
Fast-rotating green valley galaxies maintain higher metallicities than slow-rotating ones because slow rotators experience stronger outflows and more mergers that deplete their chemical content.
A HeII-based correction method makes UV and optical measurements of electron temperature and O/H metallicity agree within 0.1 dex in three nearby BCD galaxies.
CO(1-0) observations of three BGGs at z~0.3 yield one detection with M_H2 ~3e10 solar masses and two upper limits below 1e10, implying depletion timescales of 0.5-1.5 Gyr and possible early gas exhaustion in group environments.
Switching between four common stellar population synthesis models produces systematic offsets of up to 0.6 dex in stellar mass and 0.4 dex in star formation rate for the same galaxies.
Luminous Lyα emitters at z≈6 are low-mass ultra-young dwarf starbursts with median Lyα escape fractions above 40 percent, driven by vigorous star formation and low dust content.
Spatially resolved NOEMA observations reveal extended molecular gas disks in main-sequence galaxies at z=1.1-1.6, supporting steady accretion via spirals or bars instead of merger-driven starbursts.
Euclid identifies 16 massive compact galaxies with V-shaped SEDs at z>4, half as old as the universe at their redshift, mostly distinct from known AGN.
M51 group shows more advanced dynamical evolution than M101, with flattened age and nebular metallicity gradients, enhanced dust, and environmental quenching signatures from interactions.
A z=1.74 cluster has 18% red galaxies and a merging proto-BCG of 5.7e11 solar masses, implying Euclid will find ~400 assembling BCGs.
Half of strong CIII] emitters at z=5-7 show secure AGN signatures, with median equivalent width rising 0.67 dex relative to z=3-4 galaxies.
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.
MIR diagnostics and X-ray stacking on 1104 X-ray-undetected AGNs in COSMOS identify 23 CT-AGN candidates at 2.1 percent of the sample, far below the ~30 percent expected from CXB synthesis models.
Simulations of Euclid Deep Fields show that cosmic web structures can be reconstructed from H-alpha galaxies with biases from redshift distortions and selection effects that can be partially mitigated, allowing recovery of stellar mass gradients toward filaments.
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.
Euclid Q1 data shows the passive-density and morphology-density relations persist from z=0.25 to z=1, with local density increasing the quenched and early-type fractions at fixed stellar mass for galaxies below 10^10.8 solar masses.
Prospector is a flexible code for Bayesian inference of stellar population parameters from multi-wavelength photometry and spectroscopy via forward modeling and posterior sampling.
citing papers explorer
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Determining star formation histories and age-metallicity relations with convolutional neural networks
A CNN with attention and shared latent space recovers SFHs and metallicities from spectro-photometric data with ~0.12 dex age and ~0.03 dex metallicity dispersion while running thousands of times faster than full spectral fitting.
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Quiescent fractions in high-redshift galaxy groups reflect their hot-or-cold state of gas accretion
Quiescent fractions reach ~50% in hot-accretion high-z groups and ~0% in cold-accretion ones, supporting accretion-mode driven quenching via inside-out starvation.
-
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.
-
Resolving dust and Ly{\alpha} emission in a lensed galaxy at the epoch of reionization with JWST/CANUCS
Spatially resolved JWST observations of lensed LAE HCM 6A at z=6.57 reveal Lyα escaping from a dust-cleared central clump in the youngest region, with age-dependent Calzetti-like attenuation curves.
-
Testing the BH$^*$ Model: a UV-to-Optical Spectral Fitting of The Cliff
Spectral fitting of The Cliff LRD with Bagpipes yields a BH*-like solution with a low-mass metal-poor host, moderate dust, smooth star formation history, and high BH-to-stellar mass ratio.
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First Statistical Study of Over 100 Magnified Stellar Events at Redshift $z \approx 0.725$ with JWST
Over 100 caustic-crossing stellar events identified in the Dragon galaxy at z≈0.725 with JWST data yield a stellar luminosity function slope β=2.18 and confirm parity asymmetry.
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NOEMA3D: Resolving radial gas flows in disk galaxies at z~1.1-1.6 with high-resolution CO observations
High-resolution molecular gas observations show that spiral arms and bars in z~1.5 disk galaxies drive substantial radial inflows at rates matching star formation, linking morphology directly to gas transport.
-
Contrasting evolutionary pathways of fast- and slow-rotating galaxies in the green valley
Fast-rotating green valley galaxies maintain higher metallicities than slow-rotating ones because slow rotators experience stronger outflows and more mergers that deplete their chemical content.
-
Consistent Gas-Phase Temperatures and Metallicities from UV and Optical Nebular Emission: A Reliable Foundation from z=0 to Cosmic Dawn
A HeII-based correction method makes UV and optical measurements of electron temperature and O/H metallicity agree within 0.1 dex in three nearby BCD galaxies.
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Molecular gas properties of star-forming brightest group galaxies at $z \sim 0.3$
CO(1-0) observations of three BGGs at z~0.3 yield one detection with M_H2 ~3e10 solar masses and two upper limits below 1e10, implying depletion timescales of 0.5-1.5 Gyr and possible early gas exhaustion in group environments.
-
Impact of stellar population models on the estimated physical properties of galaxies
Switching between four common stellar population synthesis models produces systematic offsets of up to 0.6 dex in stellar mass and 0.4 dex in star formation rate for the same galaxies.
-
An Updated Characterization of Luminous Ly{\alpha} emitters at the End of Reionization
Luminous Lyα emitters at z≈6 are low-mass ultra-young dwarf starbursts with median Lyα escape fractions above 40 percent, driven by vigorous star formation and low dust content.
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NOEMA3D: Spatially resolved dust, CO, and [C I] in massive star-forming main sequence galaxies at cosmic noon
Spatially resolved NOEMA observations reveal extended molecular gas disks in main-sequence galaxies at z=1.1-1.6, supporting steady accretion via spirals or bars instead of merger-driven starbursts.
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Euclid: Scaled-up little red dots and other sources with v-shaped spectral energy distributions at z>4
Euclid identifies 16 massive compact galaxies with V-shaped SEDs at z>4, half as old as the universe at their redshift, mostly distinct from known AGN.
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Analysis of spatially resolved stellar populations and emission line properties in nearby galaxies with J-PLUS data. II-Results for the M51 group and first comparison with the M101 group
M51 group shows more advanced dynamical evolution than M101, with flattened age and nebular metallicity gradients, enhanced dust, and environmental quenching signatures from interactions.
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Euclid: A blue galaxy population and a brightest cluster galaxy in the making in a $z\sim1.74$ MaDCoWS2 galaxy cluster candidate
A z=1.74 cluster has 18% red galaxies and a merging proto-BCG of 5.7e11 solar masses, implying Euclid will find ~400 assembling BCGs.
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The AGN nature of strong CIII emitters in the Early Universe with JWST
Half of strong CIII] emitters at z=5-7 show secure AGN signatures, with median equivalent width rising 0.67 dex relative to z=3-4 galaxies.
-
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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Identifying Compton-thick active galactic nuclei in the COSMOS. II. Searching among mid-infrared selected AGNs
MIR diagnostics and X-ray stacking on 1104 X-ray-undetected AGNs in COSMOS identify 23 CT-AGN candidates at 2.1 percent of the sample, far below the ~30 percent expected from CXB synthesis models.
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Euclid preparation. 3D reconstruction of the cosmic web with simulated Euclid Deep spectroscopic samples
Simulations of Euclid Deep Fields show that cosmic web structures can be reconstructed from H-alpha galaxies with biases from redshift distortions and selection effects that can be partially mitigated, allowing recovery of stellar mass gradients toward filaments.
-
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.
-
Euclid Quick Data Release (Q1): The evolution of the passive-density and morphology-density relations between $z=0.25$ and $z=1$
Euclid Q1 data shows the passive-density and morphology-density relations persist from z=0.25 to z=1, with local density increasing the quenched and early-type fractions at fixed stellar mass for galaxies below 10^10.8 solar masses.
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Stellar Population Inference with Prospector
Prospector is a flexible code for Bayesian inference of stellar population parameters from multi-wavelength photometry and spectroscopy via forward modeling and posterior sampling.