POWDERDAY: Dust Radiative Transfer for Galaxy Simulations

Narayanan, Desika; Turk, Matthew J.; Robitaille, Thomas; Kelly, Ashley J.; McClellan, B. Connor; Sharma, Ray S.; Garg, Prerak; Abruzzo, Matthew; Choi, Ena; Conroy, Charlie; Johnson, Benjamin D.; Kimock, Benjamin; Li, Qi; Lovell, Christopher C.; Lower, Sidney; Privon, George C.; Roberts, Jonathan; Sethuram, Snigdaa; Snyder, Gregory F.; Thompson, Robert; Wise, John H.

doi:10.3847/1538-4365/abc487

POWDERDAY: Dust Radiative Transfer for Galaxy Simulations

Narayanan, Desika; Turk, Matthew J.; Robitaille, Thomas; Kelly, Ashley J.; McClellan, B. Connor; Sharma, Ray S.; Garg, Prerak; Abruzzo, Matthew; Choi, Ena; Conroy, Charlie; Johnson, Benjamin D.; Kimock, Benjamin; Li, Qi; Lovell, Christopher C.; Lower, Sidney; Privon, George C.; Roberts, Jonathan; Sethuram, Snigdaa; Snyder, Gregory F.; Thompson, Robert; Wise, John H.

Authors

Desika Narayanan

Matthew J. Turk

Thomas Robitaille

Ashley Kelly a.j.kelly@durham.ac.uk
PGR Student Doctor of Philosophy

B. Connor McClellan

Ray S. Sharma

Prerak Garg

Matthew Abruzzo

Ena Choi

Charlie Conroy

Benjamin D. Johnson

Benjamin Kimock

Qi Li

Christopher C. Lovell

Sidney Lower

George C. Privon

Jonathan Roberts

Snigdaa Sethuram

Gregory F. Snyder

Robert Thompson

John H. Wise

Abstract

We present powderday (available at https://github.com/dnarayanan/powderday), a flexible, fast, open-source dust radiative transfer package designed to interface with both idealized and cosmological galaxy formation simulations. powderday builds on fsps stellar population synthesis models, and hyperion dust radiative transfer, and employs yt to interface between different software packages. We include our stellar population synthesis modeling on the fly, allowing significant flexibility in the assumed stellar physics and nebular line emission. The dust content follows either simple observationally motivated prescriptions (i.e., constant dust-to-metals ratios, or dust-to-gas ratios that vary with metallicity), direct modeling from galaxy formation simulations that include dust physics, as well as a novel approach that includes the dust content via learning-based algorithms from the simba cosmological galaxy formation simulation. Active galactic nuclei (AGNs) can additionally be included via a range of prescriptions. The output of these models are broadband (912 Å–1 mm) spectral energy distributions (SEDs), as well as filter-convolved monochromatic images. powderday is designed to eliminate last-mile efforts by researchers that employ different hydrodynamic galaxy formation models and seamlessly interfaces with gizmo, arepo, gasoline, changa, and enzo. We demonstrate the capabilities of the code via three applications: a model for the star formation rate–infrared luminosity relation in galaxies (including the impact of AGNs), the impact of circumstellar dust around AGB stars on the mid-infrared emission from galaxy SEDs, and the impact of galaxy inclination angle on dust attenuation laws.

Citation

Narayanan, D., Turk, M. J., Robitaille, T., Kelly, A. J., McClellan, B. C., Sharma, R. S., …Wise, J. H. (2021). POWDERDAY: Dust Radiative Transfer for Galaxy Simulations. Astrophysical Journal Supplement, 252(1), Article 12. https://doi.org/10.3847/1538-4365/abc487

Journal Article Type	Article
Acceptance Date	Oct 23, 2020
Online Publication Date	Jan 13, 2021
Publication Date	2021-01
Deposit Date	May 14, 2021
Publicly Available Date	Jan 13, 2022
Journal	The Astrophysical Journal Supplement Series
Print ISSN	0067-0049
Electronic ISSN	1538-4365
Publisher	American Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	252
Issue	1
Article Number	12
DOI	https://doi.org/10.3847/1538-4365/abc487
Publisher URL	https://ui.adsabs.harvard.edu/abs/2021ApJS..252...12N