Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..445l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 198, Feb. 1982, p. 445-456.
Astronomy and Astrophysics
Astronomy
22
Emission Spectra, Stellar Spectra, T Tauri Stars, Balmer Series, Calcium, Fluorescence, Forbidden Bands, Line Spectra
Scientific paper
High dispersion spectra of the T Tauri star RU Lupi are analyzed to obtain information on the physical conditions in the line emitting region. A nonuniform temperature is indicated through the region. The profiles of the Balmer lines are analyzed to yield the distance and velocity of the region where these lines are produced, while a new analysis of the fluorescence-enhanced lines gives the range of values of electron, proton and neutral hydrogen densities. From the forbidden lines inferences are made on the values of the electron density and temperature in the lower density region. Finally the existence is suggested of several distinct line emitting regions with well determined physical conditions.
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