University of Minnesota
School of Physics & Astronomy

Cosmology Lunchtime Seminar

Monday, October 1st 2018
12:15 pm:
Speaker: Iary Davidzon, IPAC/Caltech
Subject: Probing the early universe *without* JWST

The James Webb Space Telescope (JWST) will not be the only breakthrough for high redshift (z>~3) studies. Exquisite data are coming from Subaru and Spitzer telescopes, eventually covering a large area of the sky (~25 sq deg) at an unprecedented depth. Probing such a large cosmic volume will allow to collect a statistically significant sample of rare, massive galaxies still undetected in pencil-beam HST surveys. In this talk I present "pathfinder results" from the COSMOS field, showing the importance of rare massive objects to constrain star formation efficiency and stellar-to-halo mass relationship at z>3. In the same context, I also discuss present limitations from an observational point of view and how they affect our understanding of galaxy evolution (e.g. the so-called "Eddington bias").

Faculty Host: M. Claudia Scarlata

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