pop-cosmos: Insights from generative modeling of a deep, infrared-selected galaxy population

Abstract

We present an extension of the pop-cosmos model for the evolving galaxy population up to redshift $z\sim 6$. The model is trained on distributions of observed colors and magnitudes, from 26-band photometry of $\sim 420,000$ galaxies in the COSMOS2020 catalog with Spitzer IRAC $\text{Ch. 1}<26$. The generative model includes a flexible distribution over 16 stellar population synthesis (SPS) parameters, and a depth-dependent photometric uncertainty model, both represented using score-based diffusion models. We use the trained model to predict scaling relationships for the galaxy population, such as the stellar mass function, star-forming main sequence, and gas-phase and stellar metallicity vs. mass relations, demonstrating reasonable-to-excellent agreement with previously published results. We explore the connection between mid-infrared emission from active galactic nuclei (AGN) and star-formation rate, finding high AGN activity for galaxies above the star-forming main sequence at $1\lesssim z\lesssim 2$. Using the trained population model as a prior distribution, we perform inference of the redshifts and SPS parameters for 429,669 COSMOS2020 galaxies, including 39,588 with publicly available spectroscopic redshifts. The resulting redshift estimates exhibit minimal bias ($\text{median}[{\Delta }_z]=-8\times 10^{-4}$), scatter (${\sigma }_{\text{MAD}}=0.0132$), and outlier fraction ($6.19\%$) for the full $0<z<6$ spectroscopic compilation. These results establish that pop-cosmos can achieve the accuracy and realism needed to forward-model modern wide--deep surveys for Stage IV cosmology. We publicly release pop-cosmos software, mock galaxy catalogs, and COSMOS2020 redshift and SPS parameter posteriors.

47 pages, 34 figures. Accepted for publication in ApJ. Mock galaxy catalogs available at https://doi.org/10.5281/zenodo.15757717 . MCMC chains available at https://doi.org/10.5281/zenodo.15850536 . Software available at https://github.com/Cosmo-Pop

References in corpus (145)

• Array Programming with NumPy
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• Modules for Experiments in Stellar Astrophysics (MESA)
• Cosmic Star Formation History
• Binary interaction dominates the evolution of massive stars
• Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• The Cosmic Evolution Survey (COSMOS) -- Overview
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• EAZY: A Fast, Public Photometric Redshift Code
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• An Observational Determination of the Bolometric Quasar Luminosity Function
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• 3D-HST WFC3-selected Photometric Catalogs in the Five CANDELS/3D-HST Fields: Photometry, Photometric Redshifts and Stellar Masses
• Binary Population and Spectral Synthesis Version 2.1: construction, observational verification and new results
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• Active Galactic Nuclei: what's in a name?
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• AGN Dusty Tori: I. Handling of Clumpy Media
• Euclid. I. Overview of the Euclid mission
• The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
• The James Webb Space Telescope Mission
• COSMOS2020: A panchromatic view of the Universe to $z\sim 10$ from two complementary catalogs
• GALEX-SDSS-WISE Legacy Catalog (GSWLC): Star Formation Rates, Stellar Masses and Dust Attenuations of 700,000 Low-redshift Galaxies
• The Mass-Metallicity and the Fundamental Metallicity Relation revisited on a fully Te-based abundance scale for galaxies
• The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field
• Third Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• The Early Data Release of the Dark Energy Spectroscopic Instrument
• The fourth data release of the Kilo-Degree Survey: ugri imaging and nine-band optical-IR photometry over 1000 square degrees
• The Universal Relation of Galactic Chemical Evolution: The Origin of the Mass-Metallicity Relation
• The galaxy stellar mass function at 3.5<z<7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
• The dark nemesis of galaxy formation: why hot haloes trigger black hole growth and bring star formation to an end
• The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
• Nebular Emission Line Ratios in z~2-3 Star-Forming Galaxies with KBSS-MOSFIRE: Exploring the Impact of Ionization, Excitation, and Nitrogen-to-Oxygen Ratio
• DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation
• The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys
• Constraining the properties of AGN host galaxies with Spectral Energy Distribution modeling
• Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions
• The WISE AGN Catalog
• Galaxy Formation and Reionization: Key Unknowns and Expected Breakthroughs by the James Webb Space Telescope
• Star Formation at $4<z<6$ From the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH)
• Galaxy Interactions Trigger Rapid Black Hole Growth: an unprecedented view from the Hyper Suprime-Cam Survey
• A definitive merger-AGN connection at z~0 with CFIS: mergers have an excess of AGN and AGN hosts are more frequently disturbed
• Half of the Most Luminous Quasars May Be Obscured: Investigating the Nature of WISE-Selected Hot, Dust-Obscured Galaxies
• COSMOS2020: The Galaxy Stellar Mass Function: the assembly and star formation cessation of galaxies at $0.2<z\le 7.5$
• Charting the evolution of the ages and metallicities of massive galaxies since z=0.7
• The Cosmic Evolution of Metallicity from the SDSS Fossil Record
• Large Structures and Galaxy Evolution in COSMOS at z < 1.1
• Photometric Redshift with Bayesian Priors on Physical Properties of Galaxies
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field
• A New Census of the 0.2< z <3.0 Universe, Part II: The Star-Forming Sequence
• Ages of Type Ia Supernovae Over Cosmic Time
• The VANDELS survey: the stellar metallicities of star-forming galaxies at 2.5 < z < 5.0
• Widespread and Hidden Active Galactic Nuclei in Star-Forming Galaxies at Redshift > 0.3
• Stellar Absorption Line Analysis of Local Star-Forming Galaxies: The Relation Between Stellar Mass, Metallicity, Dust Attenuation and Star Formation Rate
• Incidence of WISE-Selected Obscured AGNs in Major Mergers and Interactions from the SDSS
• New Insights into the Evolution of Massive Stars and Their Effects on Our Understanding of Early Galaxies
• Photometric Redshifts for Next-Generation Surveys
• Galaxy Build-up in the first 1.5 Gyr of Cosmic History: Insights from the Stellar Mass Function at $z\sim 4-9$ from JWST NIRCam Observations
• The MOSDEF survey: AGN multi-wavelength identification, selection biases and host galaxy properties
• Spectroscopic Confirmation of a Protocluster at $z=3.37$ with a High Fraction of Quiescent Galaxies
• Spectral Templates Optimal for Selecting Galaxies at z > 8 with JWST
• A Monte Carlo simulation of the intergalactic absorption and the detectability of the Lyman continuum from distant galaxies
• Reconciling the observed star-forming sequence with the observed stellar mass function
• Coevolution of metallicity and star formation in galaxies to z=3.7: I. A fundamental plane
• RUBIES: JWST/NIRSpec Confirmation of an Infrared-luminous, Broad-line Little Red Dot with an Ionized Outflow
• The Dependence of Theoretical Synthetic Spectra on $\alpha$-enhancement in Young, Binary Stellar Populations
• Euclid preparation: XVIII. Cosmic Dawn Survey. Spitzer observations of the Euclid deep fields and calibration fields
• COLDz: A High Space Density of Massive Dusty Starburst Galaxies ~1 Billion Years after the Big Bang
• GMASS Ultradeep Spectroscopy of Galaxies at redshift z~2. I. The stellar metallicity
• Modelling type 1 quasar colours in the era of Rubin and Euclid
• A proto-cluster at z=2.45
• Multi-wavelength properties of Type 1 and Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey
• Inferring More from Less: Prospector as a Photometric Redshift Engine in the Era of JWST
• Infrared Selection of Obscured Active Galactic Nuclei in the COSMOS Field
• A spectroscopic study of blue supergiant stars in the Sculptor galaxy NGC 55: chemical evolution and distance
• COSMOS-Web: stellar mass assembly in relation to dark matter halos across $0.2<z<12$ of cosmic history
• BayeSED: A General Approach to Fitting the Spectral Energy Distribution of Galaxies
• The correlations between optical/UV broad lines and X-ray emission for a large sample of quasars
• Interpreting high [O III]/Hbeta ratios with maturing starbursts
• The VANDELS survey: the relation between UV continuum slope and stellar metallicity in star-forming galaxies at z~3
• Chemical abundance scaling relations for multiple elements in z~2-3 star-forming galaxies
• Chronicling the reionization history at $6\lesssim z\lesssim 7$ with emergent quasar damping wings
• Exploring AGN and Star Formation Activity of Massive Galaxies at Cosmic Noon
• COSMOS2020: Discovery of a protocluster of massive quiescent galaxies at $z=2.77$
• Circumstellar Dust Around AGB Stars and Implications for Infrared Emission from Galaxies
• SDSS-IV eBOSS Spectroscopy of X-ray and WISE AGN in Stripe 82X: Overview of the Demographics of X-ray and Mid-Infrared Selected Active Galactic Nuclei
• UNCOVER: 404 Error -- Models Not Found for the Triply Imaged Little Red Dot A2744-QSO1
• Testing AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars
• The fifth data release of the Kilo Degree Survey: Multi-epoch optical/NIR imaging covering wide and legacy-calibration fields
• The stellar mass versus stellar metallicity relation of star-forming galaxies at $1.6\le z\le 3.0$ and implications for the evolution of the $\alpha$-enhancement
• A galaxy-driven model of type Ia supernova luminosity variations
• ASTRODEEP-JWST: NIRCam-HST multiband photometry and redshifts for half a million sources in six extragalactic deep fields
• Weak Lensing Tomographic Redshift Distribution Inference for the Hyper Suprime-Cam Subaru Strategic Program three-year shape catalogue
• Matching the Evolution of the Stellar Mass Function Using Log-normal Star Formation Histories
• Diversity of Galaxy Dust Attenuation Curves Drives the Scatter in the IRX-beta Relation
• A new look at local ultraluminous infrared galaxies: the atlas and radiative transfer models of their complex physics
• Further evidence that galaxy age drives observed type Ia supernova luminosity differences
• A Bayesian Population Model for the Observed Dust Attenuation in Galaxies
• Data-driven, interpretable photometric redshifts trained on heterogeneous and unrepresentative data
• SBI++: Flexible, Ultra-fast Likelihood-free Inference Customized for Astronomical Applications
• Forward modeling of galaxy populations for cosmological redshift distribution inference
• How Well Can We Measure Galaxy Dust Attenuation Curves? The Impact of the Assumed Star-Dust Geometry Model in SED Fitting
• A Large Population of Luminous Active Galactic Nuclei Lacking X-ray Detections: Evidence for Heavy Obscuration?
• High-ionization emission line ratios from quasar broad line regions: metallicity or density?
• Elentári: A $z\sim 3.3$ Proto-Supercluster in COSMOS
• Diffstar: A Fully Parametric Physical Model for Galaxy Assembly History
• Hierarchical Bayesian inference of photometric redshifts with stellar population synthesis models
• Imaging Polarization of the Blue-Excess Hot Dust-Obscured Galaxy WISE J011601.41-050504.0
• The DESI PRObabilistic Value-Added Bright Galaxy Survey (PROVABGS) Mock Challenge
• Impact of an AGN featureless continuum on estimation of stellar population properties
• Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows
• pop-cosmos: A comprehensive picture of the galaxy population from COSMOS data
• On the Significance of Rare Objects at High Redshift: The Impact of Cosmic Variance
• Bayesian hierarchical modelling of the ${\mathrm{M}}_{\star }$-SFR relation from 1<z<6 in ASTRODEEP
• How not to obtain the redshift distribution from probabilistic redshift estimates: Under what conditions is it not inappropriate to estimate the redshift distribution N(z) by stacking photo-z PDFs?
• PopSED: Population-Level Inference for Galaxy Properties from Broadband Photometry with Neural Density Estimation
• A Machine Learning Approach to Predict Missing Flux Densities in Multi-band Galaxy Surveys
• Differentiable Predictions for Large Scale Structure with SHAMNet
• Starduster: A multi-wavelength SED model based on radiative transfer simulations and deep learning
• Extreme nature of four blue-excess dust-obscured galaxies revealed by optical spectroscopy
• Simulation-based inference of deep fields: galaxy population model and redshift distributions
• The Intergalactic medium transmission towards z>4 galaxies with VANDELS and the impact of dust attenuation
• Impact of stellar population synthesis choices on forward modelling-based redshift distribution estimates
• The COSMOS-Web deep galaxy group catalog up to $z=3.7$
• Where Do Obscured AGN Fit in A Galaxy's Timeline?
• DESI Complete Calibration of the Color-Redshift Relation (DC3R2): Results from early DESI data
• pop-cosmos: Scaleable inference of galaxy properties and redshifts with a data-driven population model
• Neural Stellar Population Synthesis Emulator for the DESI PROVABGS
• AGN and Star Formation at Cosmic Noon: Comparison of Data to Theoretical Models
• Cosmological feedback from a halo assembly perspective
• The less and the more IGM transmitted galaxies from z~2.7 to z~6 from VANDELS and VUDS
• Empirical Dust Attenuation Model Leads to More Realistic UVJ Diagram for TNG100 Galaxies
• Emission Line Predictions for Mock Galaxy Catalogues: a New Differentiable and Empirical Mapping from DESI
• Population and spectral synthesis: it doesn't work without binaries
• Improved Weak Lensing Photometric Redshift Calibration via StratLearn and Hierarchical Modeling
• Data-Space Validation of High-Dimensional Models by Comparing Sample Quantiles
• UFig v1: The ultra-fast image generator
• SHAM-OT: Rapid Subhalo Abundance Matching with Optimal Transport
• Exploring the physical properties of Type II Quasar candidates at intermediate redshifts with CIGALE

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