Search Publications
JWST/CEERS sheds light on dusty star-forming galaxies: Forming bulges, lopsidedness, and outside-in quenching at cosmic noon
Papovich, Casey; Finkelstein, Steven L.; Pérez-González, Pablo G. +26 more
Context. We investigate the morphology and resolved physical properties of a sample of 22 IR-selected dusty star-forming galaxies at cosmic noon using the James Webb Space Telescope NIRCam images obtained in the EGS field for the CEERS survey. The exceptional resolution of the NIRCam images allowed us to spatially resolve these galaxies up to 4.4 …
A3COSMOS: The infrared luminosity function and dust-obscured star formation rate density at 0.5 < z < 6
Magnelli, B.; Pozzi, F.; Feltre, A. +16 more
Aims: We leverage the largest available Atacama Large Millimeter/submillimeter Array (ALMA) survey from the archive (A3COSMOS) to study infrared luminosity function and dust-obscured star formation rate density of (sub)millimeter galaxies from z = 0.5 − 6.
Methods: The A3COSMOS survey utilizes all publicly available…
THEMIS 2.0: A self-consistent model for dust extinction, emission, and polarisation
Miville-Deschênes, M. -A.; Ysard, N.; Guillet, V. +6 more
Context. Recent observational constraints in emission, extinction, and polarisation have at least partially invalidated most of the astronomical standard grain models for the diffuse interstellar medium. Moreover, laboratory measurements on interstellar silicate analogues have shown quite significant differences with the optical properties used in…
Modeling the molecular gas content and CO-to-H2 conversion factors in low-metallicity star-forming dwarf galaxies
Ramambason, L.; Lebouteiller, V.; Madden, S. C. +8 more
Context. Low-metallicity dwarf galaxies often show no or little CO emission, despite the intense star formation observed in local samples. Both simulations and resolved observations indicate that molecular gas in low-metallicity galaxies may reside in small dense clumps, surrounded by a substantial amount of more diffuse gas that is not traced by …
Structures Of Dust and gAs (SODA): Constraining the innermost dust properties of II Zw96 with JWST observations of H2O and CO
Rigopoulou, D.; Efstathiou, A.; González-Alfonso, E. +4 more
We analyze JWST NIRSpec+MIRI/MRS observations of the infrared (IR) gas-phase molecular bands of the most enshrouded source (D1) within the interacting system and luminous IR galaxy II Zw 096. We report the detection of rovibrational lines of H2O ν2 = 1 − 0 (∼5.3-7.2 µm) and 12CO ν = 1 − 0 (∼4.45-4.95 µm…
The COSMOS-Web ring: In-depth characterization of an Einstein ring lensing system at z ∼ 2
Sanders, D. B.; Ilbert, O.; Kartaltepe, J. S. +35 more
Aims: We provide an in-depth analysis of the COSMOS-Web ring, an Einstein ring at z ≈ 2 that we serendipitously discovered during the data reduction of the COSMOS-Web survey and that could be the most distant lens discovered to date.
Methods: We extracted the visible and near-infrared photometry of the source and the lens from more than …
2D disc modelling of the JWST line spectrum of EX Lupi
Woitke, P.; Kamp, I.; Ábrahám, P. +3 more
We introduce a number of improvements to the thermo-chemical disc modelling code PRODIMO and new theoretical approaches that can be used to better predict and analyse the JWST line spectra of protoplanetary discs. We developed a new line escape probability method for disc geometries, and a new scheme for dust settling, and discuss how to apply UV …
Ubiquitous radio emission in quasars: Predominant AGN origin and a connection to jets, dust, and winds
Prandoni, I.; Alexander, D. M.; Hardcastle, M. J. +16 more
We present a comprehensive study of the physical origin of radio emission in optical quasars at redshifts z < 2.5. We focus particularly on the associations between compact radio emission, dust reddening, and outflows identified in our earlier work. Leveraging the deepest low-frequency radio data available to date (LoTSS Deep DR1), we achieve r…
Cosmic Vine: A z = 3.44 large-scale structure hosting massive quiescent galaxies
Brammer, Gabriel; Greve, Thomas R.; Gillman, Steven +15 more
We report the discovery of a large-scale structure at z = 3.44 revealed by JWST data in the Extended Groth Strip (EGS) field. This structure, called the Cosmic Vine, consists of 20 galaxies with spectroscopic redshifts at 3.43 < z < 3.45 and six galaxy overdensities (4 − 7σ) with consistent photometric redshifts, making up a vine-like struct…
Probing the physics of star formation (ProPStar). I. First resolved maps of the electron fraction and cosmic-ray ionization rate in NGC 1333
Caselli, Paola; Chen, Mike; Neri, Roberto +11 more
Context. Electron fraction and cosmic-ray ionization rates in star-forming regions are important quantities in astrochemical modeling and are critical to the degree of coupling between neutrals, ions, and electrons, which regulates the dynamics of the magnetic field. However, these are difficult quantities to estimate.
Aims: We aim to derive …