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The Cosmic Evolution Survey (COSMOS) -- Overview
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The Cosmic Evolution Survey (COSMOS) -- Overview
abstract
The Cosmic Evolution Survey (COSMOS) is designed to probe the correlated evolution of galaxies, star formation, active galactic nuclei (AGN) and dark matter (DM) with large-scale structure (LSS) over the redshift range z $> 0.5 $ to 6. The survey includes multi-wavelength imaging and spectroscopy from X-ray to radio wavelengths covering a 2 $\sq$\deg area, including HST imaging. Given the very high sensitivity and resolution of these datasets, COSMOS also provides unprecedented samples of objects at high redshift with greatly reduced cosmic variance, compared to earlier surveys. Here we provide a brief overview of the survey strategy, the characteristics of the major COSMOS datasets, and summarize the science goals.
Forward citations
Cited by 14 Pith papers
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Antineutron reconstruction in electromagnetic calorimeters with mixed-representation learning
MrCAL jointly reconstructs antineutron identity, direction and momentum from ECAL readouts alone, improving direction precision by up to 96% and achieving ~17% momentum resolution at 1 GeV/c.
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pop-cosmos: Disentangling galaxy properties from observables using data-driven approaches
A beta-VAE analysis of pop-cosmos models finds that five latent dimensions capture the rest-frame optical SED, corresponding to stellar mass, recent star formation, dust, and two gas ionization states.
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pop-cosmos: Disentangling galaxy properties from observables using data-driven approaches
Rest-frame optical galaxy SEDs from a 16-parameter SPS model are captured by five disentangled VAE latents (mass, young stars, dust, soft/hard ionization); metallicity and age are not independent drivers.
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Spider-Webb: enhanced star formation in low-mass galaxies within the Spiderweb protocluster revealed by JWST Pa$\beta$ narrow-band imaging
Low-mass Paβ emitters in the Spiderweb protocluster show enhanced star formation rates compared to field galaxies, with no significant deviation at higher masses.
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Massive Galaxies Form Early and Gray: Stellar Assembly and Dust Attenuation at $\mathbf{z>3.5}$ from CAPERS
Massive galaxies at z>3.5 assembled stars earlier than theoretical models predict and exhibit gray dust attenuation, especially at the highest masses.
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Dark Energy Survey Year 6 Results: Redshift Calibration of the MagLim++ Lens Sample
DES Y6 calibrates MagLim++ lens galaxy redshift distributions to 1-2% mean accuracy using SOM-based photometric redshifts plus clustering redshifts, with uncertainties compressed into a few modes.
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pop-cosmos: Galaxy size evolution across structural and star-formation classifications in COSMOS-Web
Galaxy size-mass relations exhibit double power-law breaks at different pivot masses for quiescent versus bulge-dominated samples, coinciding with AGN activity scales.
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MSA-3D: Rotation Curves and Dark Matter Fractions at z~0.5-1.7 with JWST/NIRSpec
New JWST data on 23 galaxies at 0.5<z<1.7 show median dark matter fraction of 0.63 at effective radius with 0.2 dex scatter, and a mix of rising, flat, and falling rotation curves.
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Radio spectral properties and aging of two tailed radio galaxies in a galaxy group at z=0.35
Spectral ages of 34 Myr (WAT) and 21 Myr (HT) are much younger than dynamical ages of 140-700 Myr, indicating IGM interactions and possible re-acceleration.
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COSMOS-Web: Star formation along the early Hubble sequence and the evolution of dust over the redshift range 0<z<12
Stacking analysis shows mean SFR in massive galaxies at 2<z<4.5 declines along the Hubble sequence from ~280 M⊙/yr in irregulars to ~80 M⊙/yr in spheroids, with a simple chemical evolution model explaining the rise in...
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COSMOS-Web: Star formation along the early Hubble sequence and the evolution of dust over the redshift range 0<z<12
Stacking of 850-micron data reveals SFR increasing with redshift and declining from irregular to spheroidal galaxies at 2<z<4.5, with a chemical evolution model reproducing the dust-to-stellar mass ratio rise to z~8.
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Radio spectral properties and aging of two tailed radio galaxies in a galaxy group at z=0.35
Spectral ages of a WAT and HT radio galaxy (~21–34 Myr) are ~7–20 times shorter than their dynamical ages, with spectral steepening and localized re-acceleration signatures of IGM interaction.
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Testing masking effectiveness using multi-line image cubes based on COSMOS2020 for [CII] line intensity mapping at $z_{[CII]} > 3.5$
Simulations from COSMOS2020 show masking recovers [CII] above 300 GHz in ideal conditions but noise prevents useful S/N until near the end of 2000-hour observations.
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AGN Jets from Formation to Dissipation
The chapter summarizes gaps in AGN jet research and projects how SKA standalone and combined observations will address jet-host galaxy co-evolution across scales.
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