Physics
Scientific paper
Mar 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..361..422c&link_type=abstract
Active OB-Stars: Laboratories for Stellar and Circumstellar Physics, ASP Conference Series, Vol. 361, Proceedings of the confere
Physics
Scientific paper
In order to match theoretical and observed spectra of Be and B[e] stars in the Lyman and Balmer continua regions, we solve the transfer problem, by means the Implicit Integral Method, in an stellar envelope where different temperature and density distributions are assumed and departures from equilibrium are allowed to occur for the gas state. We conclude that departures from equilibrium of the Hydrogen level populations in a thin region close to the star determine a second Balmer jump in emission or absorption, depending on whether the H levels are underpopulated or overpopulated respect to their equilibrium values. Therefore, the observed Balmer continuum of Be stars allows us to infer the physical conditions in the region of the envelope close to the star.
Cruzado Alicia
Ringuelet Adela E.
Vazquez Andrea C.
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