The emission line spectrum of He I

Details The emission line spectrum of He I The emission line spectrum of He I

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238...57a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 1, 1989, p. 57-72. Sponsorship: U.S.-Israel Bi

Astronomy and Astrophysics

Astronomy

69

Emission Spectra, Gas Spectroscopy, Helium, Line Spectra, Neutral Gases, Abundance, Gas Density, Optical Thickness

Scientific paper

The I emission line spectrum of He I for densities less than 10 to the 14th/cu cm are calculated for a large range in optical depth. The model, which includes collisional ionization and three-body recombination, is used to check the primordial helium abundance. Despite the incorporation of an improved 2 3S - 3 3D collisional rate, low values are obtained. The results are used to study the broad He lines in the spectrum of AGNs. In addition, a reduced scheme is presented, which may be incorporated into existing photoionization codes.

Affiliated with

Also associated with

No associations

Rating

The emission line spectrum of He I does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The emission line spectrum of He I, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The emission line spectrum of He I will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1874800