A Self-consistent Framework for Multiline Modeling in Line Intensity Mapping Experiments

doi:10.3847/1538-4357/ab55df

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A Self-consistent Framework for Multiline Modeling in Line Intensity Mapping Experiments

2019-12-17

DOI：10.3847/1538-4357/ab55df

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Abstract

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Line intensity mapping (LIM) is a promising approach to study star formation and the interstellar medium (ISM) in galaxies by measuring the aggregate line emission from the entire galaxy population. In this work, we develop a simple yet physically motivated framework for modeling the line emission as would be observed in LIM experiments. It is done by building on analytic models of the cosmic infrared background that connect total infrared luminosity of galaxies to their host dark matter halos. We present models of the H I 21 cm, CO (1-0), [C II] 158 mu m, and [N II] 122 and 205 mu m lines consistent with current observational constraints. With four case studies of various combinations of these lines that probe different ISM phases, we demonstrate the potential for reliably extracting physical properties of the ISM, and the evolution of these properties with cosmic time, from auto- and cross-correlation analysis of these lines as measured by future LIM experiments.

Keywords:

TO-MOLECULAR TRANSITION

C II INTENSITY

STAR-FORMATION

PHOTODISSOCIATION REGIONS

GALAXY FORMATION

CARBON-MONOXIDE

MASS

EVOLUTION

DUST

GAS

Journal

Astrophysical Journal

IF:

5.4

Papers:

8.3W

Citations:

32.0W

Organization

California Institute of Technology

Scholars:

2.9W

Papers: 2.5W

Citations: 4.9W

Princeton University

Scholars:

2.1W

Papers: 2.3W

Citations: 5.1W

national aeronautics & space administration (nasa)

Scholars:

3.1W

Papers: 2.6W

Citations: 46

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