Work

Figuring Out Gas & Galaxies in Enzo (FOGGIE). II. Emission from the z = 3 Circumgalactic Medium

Year: 2020

Type: article

Abstract: Observing the circumgalactic medium (CGM) in emission provides 3D maps of the spatial and kinematic extent of the gas that fuels galaxies and receives their feedback. We present mock emission-line maps of highly resolved CGM gas from the Figuring Out Gas & Galaxies in Enzo (FOGGIE) project and link these maps back to physical and spatial properties of the gas. In particular, we examine the ionization source leading to most O vi emission and how resolution affects the physical properties of the gas generating the emission. Finally, when increasing the spatial resolution alone, the total luminosity of the line emission increases by an order of magnitude for some lines considered. Current integral field unit instruments like Keck Cosmic Web Imager and Multi Unit Spectroscopic Explorer should be able to detect the brightest knots and filaments of such emission, and use this to infer the bulk kinematics of the CGM gas with respect to the galaxy. We conclude that the spatial resolution of simulated CGM gas can significantly influence the distribution of gas temperatures, densities, and metallicities that contribute to a given observable region. Greater spatial resolution than has been typically included in cosmological simulations to date is needed to properly interpret observations in terms of the underlying gas structure driving emission.

Source: The Astrophysical Journal

DOI: 10.3847/1538-4357/ab9310

Authors: Lauren Corlies, Molly S. Peeples, Jason Tumlinson, Brian W. O’Shea, Nicolas Lehner, J. Christopher Howk, John M. O’Meara, Britton D. Smith

Institutions: Johns Hopkins University, Space Telescope Science Institute, National Superconducting Cyclotron Laboratory, Michigan State University, University of Notre Dame, W.M. Keck Observatory, Saint Michael's College, Royal Observatory, University of Edinburgh

Language: English

Topic: Galaxies: Formation, Evolution, Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, National Aeronautics and Space Administration, National Centre for Supercomputing Applications, University of Illinois at Urbana-Champaign, Ames Research Center, Science Mission Directorate

Awards: JINA Center for the Evolution of the Elements, Collaborative Research:Framework:Software:NSCI:Enzo for the Exascale Era (Enzo-E), WE PROPOSE TO USE A NEW &QUOT;GALAXY PARTICLE&QUOT;-BASED METHOD WITHIN COSMOLOGICAL HYDRODYNAMICS SIMULATIONS TO SIMULTANEOUSLY MODEL BOTH THE GALAX, G425872791, Petascale Adaptive Mesh Simulations of Milky Way-type Galaxies and Their Environments, Sustained-Petascale In Action: Blue Waters Enabling Transformative Science And Engineering, COSMOLOGICAL SIMULATIONS OF GALAXY CLUSTERS TYPICALLY TREAT THE INTRACLUSTER MEDIUM AS A SIMPLE MAGNETIZED FLUID AN APPROXIMATION THAT IS NOW UNDERS, G5579076799, Collaborative Research: Multiscale Physics and Feedback in Real and Simulated Circumgalactic Gas Over Cosmic Time, G7125371745, Collaborative research: Multiscale physics and feedback in real and simulated circumgalactic gas over cosmic time, OUR MODERN UNDERSTANDING OF GALAXY EVOLUTION RELIES HEAVILY ON THE EXCHANGE OF MATTER BETWEEN GALAXIES AND THE INTERGALACTIC MEDIUM (IGM) TO EXPLAIN

OpenAlex ID: W2900877615

FWCI: 3.464

Cites: 96

Cited by: 47

Related to: 10