CYGNUS


CYprus models for Galaxies and their NUclear Spectra – CYGNUS

Multi-wavelength view of the radio galaxy Cygnus A which harbors an active galactic nucleus.
Image Credit: X-ray: NASA/CXC/SAO; Optical: NASA/STScI; Radio: NSF/NRAO/AUI/VLA

 

Radiative transfer models for galaxies and active galactic nuclei (AGN) are now routinely used for interpreting multi-wavelength observations of galaxies and are increasingly being incorporated in simulations of galaxy formation and evolution.

CYGNUS (CYprus models for Galaxies and their NUclear Spectra) is a collection of radiative transfer models for AGN tori (Efstathiou & Rowan-Robinson 1995, Efstathiou et al. 2013), starburst galaxies (Efstathiou, Rowan-Robinson & Siebenmorgen 2000, Efstathiou & Siebenmorgen 2009) and host galaxies (Efstathiou & Rowan-Robinson 2003, Efstathiou et al. 2021).

The models are currently available as grids of models stored in Python structures and a README file is provided for each set of models as indicated in the table below.

 

Model type

Model Library Python

Documentation

Starburst

starburst_models12_low_res

README_CYGNUS_starburst_2022

AGN tapered discs/tori

tapered_discs_5d_ir1

README_CYGNUS_torus_2022

Spheroidal models

spheroid_models1_z=0.1_met=0.008

spheroid_models1_z=4.4_met=0.001

README_CYGNUS_spheroidal_2022

AGN polar dust

polar_dust_library1

README_CYGNUS_polar_dust_2022

Mosaic depicting Leda and the Swan discovered in the vicinity of the Sanctuary of Aphrodite at Palaipafos, late 2nd – early 3rd century AD, Palaepaphos Museum, Cyprus.