Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231..419j&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, March 15, 1988, p. 419-444. SERC-supported researc
Astronomy and Astrophysics
Astronomy
23
Chromosphere, Giant Stars, Late Stars, Stellar Spectra, Ultraviolet Astronomy, Electron Scattering, Emission Spectra, Iue, Line Spectra, Radiative Transfer, Sulfur
Scientific paper
Constraints on the structure of the chromospheres of Alpha Boo, Alpha Tau, and Beta Gru derived from high-resolution IUE spectra are used to investigate the excitation mechanisms of emission lines of neutral sulfur, which are prominent in IUE spectra of late-type giant and supergiant stars. Observational data for the S I lines from other studies are collected and discussed together with data for the prototype M supergiant Alpha Ori. The physical conditions under which the emission lines are excited are summarized, and the atomic processes and models required to interpret the line fluxes are addressed. The processes leading to emission in Alpha Tau, Alpha Boo, and Beta Gru are identified. The requirements for more accurate atomic and spectroscopic data are discussed, and the potential diagnostic value of the various emission lines is assessed.
No associations
LandOfFree
The excitation of S I emission lines in chromospheres of late-type giant stars 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 excitation of S I emission lines in chromospheres of late-type giant stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The excitation of S I emission lines in chromospheres of late-type giant stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1691609