eprintid: 10066
rev_number: 43
eprint_status: archive
userid: 599
dir: disk0/00/01/00/66
datestamp: 2008-10-16 10:21:49
lastmod: 2021-10-10 23:19:08
status_changed: 2008-10-16 10:21:49
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Ercolano, B
creators_name: Storey, PJ
title: Theoretical calculations of the HI, HeI and HeII free-bound continuous emission spectra
subjects: 11000
divisions: UCL
divisions: B04
divisions: C06
divisions: F60
keywords: atomic data, TEMPERATURE-FLUCTUATIONS, PLANETARY-NEBULAE, RECOMBINATION, COEFFICIENTS
abstract: We present coefficients for the calculation of the continuous emission spectra of H I, He I and He II due to electron-ion recombination. Coefficients are given for photon energies from the first ionization threshold for each ion to the n = 20 threshold of hydrogen (36.5 mu m), and for temperatures 100 <= T <= 10(5) K. The emission coefficients for He I are derived from accurate ab initio photoionization data. The coefficients are scaled in such a way that they may be interpolated by a simple scheme with uncertainties less than 1 per cent in the whole temperature and wavelength domain. The data are suitable for incorporation into photoionization/plasma codes and should aid with the interpretation of spectra from the very cold ionized gas phase inferred to exist in a number of gaseous clouds.
date: 2006-11-11
publisher: BLACKWELL PUBLISHING
vfaculties: VMPS
rae2008: 19
oa_status: green
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_batch
elements_source: Web of Science
elements_id: 84312
doi: 10.1111/j.1365-2966.2006.10988.x
lyricists_name: Storey, Peter
lyricists_id: PJSTO59
full_text_status: public
publication: MON NOT R ASTRON SOC
volume: 372
number: 4
pagerange: 1875 - 1878
refereed: TRUE
issn: 0035-8711
citation:        Ercolano, B;    Storey, PJ;      (2006)    Theoretical calculations of the HI, HeI and HeII free-bound continuous emission spectra.                   MON NOT R ASTRON SOC , 372  (4)   1875 - 1878.    10.1111/j.1365-2966.2006.10988.x <https://doi.org/10.1111/j.1365-2966.2006.10988.x>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10066/1/10066.pdf