Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...486..571m&link_type=abstract
Astrophysical Journal v.486, p.571
Astronomy and Astrophysics
Astronomy
2
Atomic Data, Atomic Processes, Stars: Binaries: Symbiotic, Stars: Individual Constellation Name: Rr Telescopii, Ultraviolet: Stars
Scientific paper
Theoretical O V electron-density--sensitive emission line ratios for R = I(2s2 1S0 - 2s2p 3P2)/I(2s2 1S0 - 2s2p 3P1) are presented. Inspection of Goddard High Resolution Spectrograph Hubble Space Telescope spectra of RR Tel reveals the presence of the [O V] 2s2 1S - 2s2p 3P2 line at 1213.80 Angstroms, which is 4.62 +/- 0.12 Angstroms away from the 2s2 1S - 2s2p 3P2 intercombination transition at 1218.42 Angstroms, in good agreement with the theoretical prediction of Delta lambda = 4.54 Angstroms. The resultant value of R = 0.82 +/- 0.11 implies a logarithmic electron density, log Ne, of 5.2 +/- 0.2 cm-3, in good agreement with that found from other ions with high electron temperature, such as Ne VI, which also provides support for the identification.
Aller Lawrence H.
Berrington Keith A.
Feibelman Walter A.
Fleming Janine
Hibbert Alan
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