#jwst observations
8 papers · 1 filter
How to raise a supermassive black hole: interpreting early JWST AGN with the AESOPICA simulations
Sophie Koudmani, Jan Scholtz, Anthony J. Taylor +11
The paper uses the AESOPICA suite of cosmological simulations, varying black hole seed masses and accretion physics, to interpret the abundance and apparent overmassiveness of earl…
Methane on the temperate exo-Saturn TOI-199b
Aaron Bello-Arufe, Renyu Hu, Mantas Zilinskas +10
The authors present a JWST NIRSpec transmission spectrum of the temperate exo‑Saturn TOI‑199b, detecting methane and suggesting the presence of ammonia, while evaluating cloud/haze…
(Re)solving the Complex Multiscale Morphology and V-shaped Spectral Energy Distribution of a Newly Discovered Strongly Lensed Little Red Dot in A383
Josephine F. W. Baggen, Pieter van Dokkum, Ivo Labbé +1
The paper reports JWST NIRCam observations of a strongly lensed, luminous "little red dot" galaxy at redshift 6.0 behind the cluster A383, revealing a complex morphology with disti…
Piercing through the Haze: Characterizing Titan-like terrestrial exoplanets with JWST
L. C. Mayorga, Jacob Lustig-Yaeger, Andrew P. Lincowski +5
The paper evaluates how well JWST can characterize Titan-like exoplanet atmospheres by testing retrieval methods on Cassini data and applying them to a hypothetical TRAPPIST-1 plan…
The onset of stellar bars at Cosmic Noon. Bar-driven quenching and AGN co-evolution in a mature disc galaxy
Luca Costantin, Lorenzo Morelli, Cristina Cabello +15
The paper analyzes a barred spiral galaxy at redshift 1.17 using JWST NIRSpec data, showing that the bar formed early (z~5) and contributed to long‑term star‑formation quenching wh…
Mass--size evolution and the emerging passive--density relation revealed by JWST/NIRCam in the Spiderweb protocluster
J. Nadolny, J. M. Pérez-MartÃnez, H. Dannerbauer +8
The paper uses JWST/NIRCam imaging to study how galaxy sizes and structures in the Spiderweb protocluster at z=2.16 depend on environment, finding distinct mass‑size relations for…