A5003748154- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Atomic and Molecular Physics
- Spectroscopy and Laser Applications
- Integrated Energy Systems Optimization
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Scientific Research and Discoveries
- Electrical Fault Detection and Protection
- Energy Load and Power Forecasting
- Remote Sensing in Agriculture
- Pulsars and Gravitational Waves Research
- Global Energy and Sustainability Research
- Superconducting and THz Device Technology
- Lightning and Electromagnetic Phenomena
- Laser-induced spectroscopy and plasma
- Atomic and Subatomic Physics Research
- Building Energy and Comfort Optimization
- Power Transformer Diagnostics and Insulation
- Dark Matter and Cosmic Phenomena
- Astro and Planetary Science
- Bacteriophages and microbial interactions
University of Arizona
2020-2022
Technical University of Denmark
2020
Arizona State University
2017-2018
University of Copenhagen
2013-2016
Of the almost 40 star forming galaxies at z>~5 (not counting QSOs) observed in [CII] to date, nearly half are either very faint [CII], or not detected all, and fall well below expectations based on locally derived relations between formation rate (SFR) luminosity. Combining cosmological zoom simulations of with SIGAME (SImulator GAlaxy Millimeter/submillimeter Emission) we have modeled multi-phased interstellar medium (ISM) its emission [OI] [OIII], from 30 main sequence z~6 rates...
We investigate the fine-structure [C${\rm \scriptsize II}$] line at $158\,\mu$m as a molecular gas tracer by analyzing relationship between mass ($M_{\rm mol}$) and luminosity ($L_{\rm [CII]}$) in 11,125 $z\simeq 6$ star-forming, main sequence galaxies from SIMBA simulations, with emission modeled S\'IGAME. Though most ($\sim 50-100\,\%$) of our simulations is ionized, bulk ($> 50\,\%$) comes phase. find sub-linear (slope $0.78\pm 0.01$) $\log L_{\rm [CII]}-\log M_{\rm mol}$ relation,...
We present SÍGAME simulations of the 157.7 μm fine structure line emission from cosmological smoothed particle hydrodynamics seven main sequence galaxies at z = 2. Using sub-grid physics prescriptions gas in our is modeled as a multi-phased interstellar medium comprised molecular residing giant clouds, an atomic phase associated with photo-dissociation regions (PDRs) cloud surfaces, and diffuse, ionized phase. Adopting logotropic density profiles accounting for heating by local FUV radiation...
We present the Virgo Environment Traced in CO (VERTICO) survey, a new effort to map $^{12}$CO($2-1$), $^{13}$CO($2-1$), and C$^{18}$O($2-1$) 51 Cluster galaxies with Atacama Compact Array, part of Large Millimeter/submillimeter Array (ALMA). The primary motivation VERTICO is understand physical mechanisms that perturb molecular gas disks, therefore star formation galaxy evolution, dense environments. This first paper contains an overview VERTICO's design sample selection, $^{12}$CO($2-1$)...
We present the first predictions for $L_{\rm [CII]}$ - SFR relation and [CII] luminosity function (LF) in Epoch of Reionization (EoR) based on cosmological hydrodynamics simulations using SIMBA suite plus radiative transfer calculations via S\'IGAME. The sample consists 11,137 galaxies covering halo mass $\log M_{\rm halo}\in$[9, 12.4] $M_\odot$, star formation rate SFR$\in$[0.01, 330] $M_\odot$ yr$^{-1}$, metallicity $<Z_{\rm gas}>_{\rm SFR}\in$[0.1, 0.9] $Z_\odot$. simulated [CII]}$-SFR is...
We quantify the presence of active galactic nuclei (AGNs) in a mass-complete (M* > 5 × 1010 M☉) sample 123 star-forming and quiescent galaxies at 1.5 ⩽ z 2.5, using X-ray data from 4 Ms Chandra Deep Field-South (CDF-S) survey. 41% ± 7% are detected directly X-rays, 22% 5% with rest-frame 0.5–8 keV luminosities consistent hosting luminous AGNs (L0.5–8 3 1042 erg s−1). The latter fraction is similar for galaxies, does not depend on galaxy stellar mass, suggesting that perhaps triggered by...
Abstract One of the most fundamental baryonic matter components galaxies is neutral atomic hydrogen (H i ). At low redshifts, this component can be traced directly through 21 cm transition, but to infer H gas content distant galaxies, a viable tracer needed. We here investigate fidelity fine-structure transition ( 2 P 3/2 − 1/3 ) singly ionized carbon C ii at 158 μ m as proxy for in set simulated z ≈ 6, following work by Heintz et al. select 11,125 star-forming from simba simulations, with...
Detecting the line-intensity mapping (LIM) signal from galaxies of Epoch Reionization is an emerging tool to constrain their role in reionization. Ongoing and upcoming experiments target fluctuations across sky reveal statistical astrophysical properties these via statistics, e.g., power spectrum. Here, we revisit [C II]$_{158 \mu \text{m}}$ LIM spectrum under non-uniform line-luminosity scatter, which has a halo-mass variation properties. Line-luminosity scatter cosmological hydrodynamic...
Modeling emission lines from the millimeter to UV and producing synthetic spectra is crucial for a good understanding of observations, yet it an art filled with hazards. This proceedings “Walking Line”, 3-day conference held in 2018 that brought together scientists working on different aspects line simulations, order share knowledge discuss methodology. Emission across spectrum were discussed, most focus interstellar medium, but also some topics circumgalactic medium. The important quality...
We present an update to the framework called SImulator of GAlaxy Millimeter/submillimeter Emission (S\'IGAME). S\'IGAME derives line emission in far-infrared (FIR) for galaxies particle-based cosmological hydrodynamics simulations by applying radiative transfer and physics recipes via a post-processing step after completion simulation. In this version, new technique is developed model higher gas densities parametrizing density probability distribution function (PDF) resolution use as look-up...
We present SIGAME (SImulator of GAlaxy Millimetre/submillimetre Emission), a new numerical code designed to simulate the 12CO rotational line emission spectrum galaxies. Using sub-grid physics recipes post-process outputs smoothed particle hydrodynamics (SPH) simulations, molecular gas phase is condensed out hot and partly ionized SPH gas. The subjected far-UV radiation fields cosmic ray ionization rates which are set scale with local star formation rate volume density. Level populations...
Abstract Using our measurements of the H α emission line flux originating in cool ( T ∼ 10 4 K) gas that populates halos galaxies, we build a joint model to describe mass circumgalactic medium (CGM) as function galactic stellar <?CDATA ${10}^{9.5}\lt {M}_{\ast }/{M}_{\odot }\lt {10}^{11}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mn>9.5</mml:mn> </mml:msup> <mml:mo><</mml:mo> <mml:msub>...
We present S\'IGAME simulations of the [CII]157.7$\mu$ fine structure line emission from cosmological smoothed particle hydrodynamics (SPH) seven main sequence galaxies at z=2. Using sub-grid physics prescriptions gas in our is modeled as a multi-phased interstellar medium (ISM) comprised molecular residing giant clouds, an atomic phase associated with photo-dissociation regions (PDRs) cloud surfaces, and diffuse, ionized phase. Adopting logotropic density profiles accounting for heating by...
Detecting the line-intensity mapping (LIM) signal from galaxies of Epoch Reionization is an emerging tool to constrain their role in reionization. Ongoing and upcoming experiments target fluctuations across sky reveal statistical astrophysical properties these via statistics, e.g., power spectrum. Here, we revisit [C II]$_{158 μ\text{m}}$ LIM spectrum under non-uniform line-luminosity scatter, which has a halo-mass variation properties. Line-luminosity scatter cosmological hydrodynamic...
Modeling emission lines from the millimeter to UV and producing synthetic spectra is crucial for a good understanding of observations, yet it an art filled with hazards. This proceedings "Walking Line", 3-day conference held in 2018 that brought together scientists working on different aspects line simulations, order share knowledge discuss methodology. Emission across spectrum were discussed, most focus interstellar medium, but also some topics circumgalactic medium. The important quality...
What main mechanisms set the star formation rate (SFR) of galaxies? This PhD thesis is a quest into influences gas and active galactic nuclei (AGNs) on SFR, with particular focus massive galaxies at z~2. First, new code if presented; SImulator GAlaxy Millimeter/submillimeter Emission (SÍGAME) which can predict atomic/molecular line emission in far-infrared regime from galaxies. By post-processing outputs cosmological simulations galaxy sub-grid physics recipes, SÍGAME divides interstellar...