Work

Absorption spectra from galactic wind models: a framework to link PLUTO simulations to TRIDENT

Year: 2020

Type: article

Abstract: Galactic winds probe how feedback regulates the mass and metallicity of galaxies. Galactic winds have cold gas, which is mainly observable with absorption and emission lines. Theoretically studying how absorption lines are produced requires numerical simulations and realistic starburst UV backgrounds. We use outputs from a suite of 3D PLUTO simulations of wind-cloud interactions to first estimate column densities and temperatures. Then, to create synthetic spectra, we developed a python interface to link our PLUTO simulations to TRIDENT via the YT-package infrastructure. We produce UV backgrounds accounting for the star formation rate of starbursts. For this purpose, we use fluxes generated by STARBURST99, which are then processed through CLOUDY to create customised ion tables. Such tables are subsequently read into TRIDENT to generate absorption spectra. We explain how the various packages and tools communicate with each other to create ion spectra consistent with spectral energy distributions of starburst systems.

Source: Proceedings of the International Astronomical Union

DOI: 10.1017/s1743921322001211

Authors: Benedetta Casavecchia, Wladimir E. Banda-Barragán, Marcus Brüggen, Fabrizio Brighenti

Institutions: Universität Hamburg, University of Bologna

Language: English

Topic: Galaxies: Formation, Evolution, Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,550

Funders: Deutsche Forschungsgemeinschaft, Secretaría de Educación Superior, Ciencia, Tecnología e Innovación