Stout: Cloudy's Atomic and Molecular Database

Authors

Matt L. Lykins, University of KentuckyFollow
Gary J. Ferland, University of KentuckyFollow
R. Kisielius, Vilnius University, Lithuania
Marios Chatzikos, University of KentuckyFollow
R. L. Porter, University of Georgia
P. A. M. van Hoof, Royal Observatory of Belgium, Belgium
R. J. R. Williams, AWE plc, UK
F. P. Keenan, Queen's University - Belfast, UK
P. C. Stancil, University of Georgia

Abstract

We describe a new atomic and molecular database we developed for use in the spectral synthesis code Cloudy. The design of Stout is driven by the data needs of Cloudy, which simulates molecular, atomic, and ionized gas with kinetic temperatures 2.8 K < T <10¹⁰ K and densities spanning the low-to high-density limits. The radiation field between photon energies 10⁻⁸ Ry and 100 MeV is considered, along with all atoms and ions of the lightest 30 elements, and ~10² molecules. For ease of maintenance, the data are stored in a format as close as possible to the original data sources. Few data sources include the full range of data we need. We describe how we fill in the gaps in the data or extrapolate rates beyond their tabulated range. We tabulate data sources both for the atomic spectroscopic parameters and for collision data for the next release of Cloudy. This is not intended as a review of the current status of atomic data, but rather a description of the features of the database which we will build upon.

Document Type

Article

Publication Date

7-7-2015

Notes/Citation Information

Published in The Astrophysical Journal, v. 807, no. 2, article 118, p. 1-9.

© 2015. The American Astronomical Society. All rights reserved.

Reproduced by permission of the AAS.

Digital Object Identifier (DOI)

http://dx.doi.org/10.1088/0004-637X/807/2/118

Funding Information

G.J.F. acknowledges support by NSF (1108928, 1109061, and 1412155), NASA (10-ATP10-0053, 10-ADAP10-0073, NNX12AH73G, and ATP13-0153), and STScI (HST-AR-13245, GO-12560, HST-GO-12309, GO-13310.002 A, and HST-AR-13914) and thanks to the Leverhulme Trust for support via the award of a Visiting Professorship at Queens University Belfast (VP1-2012-025). R.K.'s research is funded by the European Social Fund under the Global Grant measure, project VP1-3.1-ŠMM-07-K-02-013.

Repository Citation

Lykins, Matt L.; Ferland, Gary J.; Kisielius, R.; Chatzikos, Marios; Porter, R. L.; van Hoof, P. A. M.; Williams, R. J. R.; Keenan, F. P.; and Stancil, P. C., "Stout: Cloudy's Atomic and Molecular Database" (2015). Physics and Astronomy Faculty Publications. 253.
https://uknowledge.uky.edu/physastron_facpub/253