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Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 6 (2024)
The complexity of the energy levels in Fe ii has made it difficult to theoretically interpret its observational emission spectrum. However, addressing this challenge could provide valuable insights into the main sequence of QSOs using “eigenvector
Externí odkaz:
https://doaj.org/article/5db5bd156a794d9eb57e08169c1a8363
Publikováno v:
Astrophysical Journal; 8/10/2024, Vol. 971 Issue 1, p1-11, 11p
The depletion of elements onto dust grains is characterized using a generalized depletion strength $F_*$ for any sightline, and trend-line parameters $A_X, B_X$ and $z_X$. The parameters $A_X, B_X$ and $z_X$ define the relative depletion pattern, for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b606e63c41d6fafe83c1f8f4445eea6
http://arxiv.org/abs/2205.13023
http://arxiv.org/abs/2205.13023
Publikováno v:
Astronomy; Volume 1; Issue 3; Pages: 255-270
Atomic and molecular data are required to conduct detailed calculations of microphysical processes performed by CLOUDY to predict the spectra of a theoretical model. One of the three databases CLOUDY currently utilizes is CHIANTI version 7.1. CHIANTI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06026f50967253342c906b95c9e7672e
Atomic species in the interstellar medium (ISM) transition out of their gas phase mainly by depletion onto dust. In this study, we examine if there is any change to the spectral line ratio predictions from a photoionization model of the Orion H II re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4aa74ea6e52d57a633dde604c993d26f
Examination of emission lines in high-velocity-resolution optical spectra of the Orion Nebula confirms that the velocity component on the red wing of the main ionization front emission line is due to backscattering in the Photon Dominated Region. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1d9ea77da7ecd4690a61a5e5eac512c
Publikováno v:
Research Notes of the AAS. 7:45
Here we present our current update of CLOUDY on gas-phase chemical reactions for the formation and destruction of the SiS molecule, its energy levels, and collisional rate coefficients with H$_2$, H, and He over a wide range of temperatures. As a res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29992bf8dd09a29a6342bf73ebaf8e1e
https://doi.org/10.3847/2515-5172/acc1ea
https://doi.org/10.3847/2515-5172/acc1ea
Publikováno v:
The Astrophysical Journal. 934:53
Here we present our current updates of the gas-phase chemical reaction rates and molecular lines in the spectral synthesis code CLOUDY, and its implications in spectroscopic modelling of various astrophysical environments. We include energy levels, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f667a4ef0a174ab895ba22de082127d
https://doi.org/10.3847/1538-4357/ac7789
https://doi.org/10.3847/1538-4357/ac7789
Autor:
Parisa Ali Mohammadi, Gary Ferland
Publikováno v:
Publications of the Astronomical Society of the Pacific. 134:073001
The partition function, $U$, the number of available states in an atom or molecules, is crucial for understanding the physical state of any astrophysical system in thermodynamic equilibrium. There are surprisingly few {\em useful} discussions of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67f19c8020950895f3b74ff7ea4654c4
https://doi.org/10.1088/1538-3873/ac7664
https://doi.org/10.1088/1538-3873/ac7664