Conveners
Session 2
- Laura Pentericci
-
Fredrick Davies24/06/2024, 13:45
-
Julian Munoz (UT Austin)24/06/2024, 14:15
The launch of the James Webb Space Telescope (JWST) has ignited a revolution in our understanding of the early universe. Its exquisite infrared capabilities have allowed observers to measure the stellar masses of galaxies, as well as to find them at higher redshifts than ever before. I will describe how, intriguingly, observations in these two arenas appear to be in tension with our models....
Go to contribution page -
Koki Kakiichi (Cosmic Dawn Center, University of Copenhagen)24/06/2024, 14:30
Mapping the large-scale structures of galaxy distribution and the intergalactic medium (IGM) — 'the art of cosmography' — has been instrumental in advancing our understanding of the Universe. The James Webb Space Telescope (JWST) has revolutionized the study of distant galaxies and cosmic reionization. However, the entire structure of the 'cosmic web' still remains unseen. In this talk, I will...
Go to contribution page -
Daichi Kashino (NAOJ)24/06/2024, 14:45
We present the results from the EIGER survey, conducting JWST/NIRCam WFSS surveys in the fields of luminous quasars at $z \ge 6$. Our analysis includes observations from five of the six designated quasar fields, leading to the identification of approximately 750 [OIII]-emitting galaxies with spectroscopic confirmation across a redshift span of $z=5.3$-–7.0. By examining both the spatial...
Go to contribution page -
Callum Donnan (University of Edinburgh)24/06/2024, 15:00
I will present a new determination of the evolving galaxy UV luminosity function (LF) over the redshift range $8.5<z<15.5$ using a combination of several major Cycle-1 JWST imaging programmes - PRIMER, JADES and NGDEEP. This multi-field approach yields a total of $\simeq370$ sq. arcmin of JWST/NIRCam imaging, reaching (5-$\sigma$) depths of $\simeq30$ AB mag in the deepest regions. We select...
Go to contribution page -
Christopher Cain (Arizona State University)24/06/2024, 15:45
It has been noted recently that the latest JWST observations at z > 6 may suggest ionizing photon production by galaxies significantly in excess of previous expectations. Taken at face value, this apparent excess implies an earlier end to reionization (at z ~ 8) than suggested by measurements of the CMB optical depth and especially the 5 < z < 6 Ly-alpha forest. There are two viable avenues...
Go to contribution page -
Robert Feldmann (University of Zurich)24/06/2024, 16:00
Observations with the James Webb Space Telescope (JWST) have revealed a higher than expected ultraviolet (UV) luminosity density as well as the presence of luminous, massive galaxies already a few hundred million years after the Big Bang. The physical origin of these observational findings is not well understood but possibly related to an increased star formation efficiency at early cosmic...
Go to contribution page -
Ivan Nikolić (Scuola Normale Superiore Pisa)24/06/2024, 16:15
We know very little about the first galaxies that started the Cosmic Dawn (CD) and led to the Epoch of Reionization (EoR). Theory predicts these objects are highly biased, experiencing episodes of stochastic star-formation and feedback. As a consequence, radiation fields driving the CD and the EoR are expected to be very inhomogeneous. The inhomogeneity and timing of these cosmic milestones...
Go to contribution page -
Enrico Garaldi (Institute for Fundamental Physics of the Universe)24/06/2024, 16:30
Within a decade, an array of observational facilities will deliver the first comprehensive picture of the reionizing Universe, from galaxies to the diffuse IGM. This will enable the detailed investigation of the intricate connection between the first collapsed structures and cosmic reionization. I will present my ongoing efforts to build a solid theoretical framework of study this phenomenon....
Go to contribution page -
24/06/2024, 16:45