ÆSOPUS 2.0
- Author(s)
- Paola Marigo, Peter Woitke, Emanuele Tognelli, Léo Girardi, Bernhard Aringer, Alessandro Bressan
- Abstract
In this study we compute the equation of state and Rosseland mean opacity from temperatures of T ≃ 30,000 K down to T ≃ 400 K, pushing the capabilities of the ÆSOPUS code into the regime where solid grains can form. The GGchem code is used to solve the chemistry for temperatures less than ≃3000 K. Atoms, molecules, and dust grains in thermodynamic equilibrium are all included in the equation of state. To incorporate monochromatic atomic and molecular cross sections, an optimized opacity sampling technique is used. The Mie theory is employed to calculate the opacity of 43 grain species. Tables of Rosseland mean opacities for scaled-solar compositions are provided. Based on our computing resources, opacities for other chemical patterns, as well as various grain sizes, porosities, and shapes, can be easily computed upon user request to the corresponding author.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- University of Padova, Österreichische Akademie der Wissenschaften (ÖAW), Czech Academy of Sciences, Osservatorio Astronomico, Scuola Internazionale Superiore di Studi Avanzati
- Journal
- Astrophysical Journal
- Volume
- 960
- No. of pages
- 9
- ISSN
- 0004-637X
- DOI
- https://doi.org/10.3847/1538-4357/ad0898
- Publication date
- 01-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- ASJC Scopus subject areas
- Astronomy and Astrophysics, Space and Planetary Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/0fd60bc0-a2ea-4a69-9977-6373e13e2fff