A study of the wind of P Cygni applying the self-absorption-curve method

Details A study of the wind of P Cygni applying the self-absorption-curve method A study of the wind of P Cygni applying the self-absorption-curve method

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aspc..233..113f&link_type=abstract

P Cygni 2000: 400 Years of Progress, ASP Conference Proceeding Vol. 233, Edited by M. de Groot and C. Sterken, San Francisco: As

Astronomy and Astrophysics

Astronomy

Scientific paper

After a brief description of how spectral emission lines can be studied by the self-absorption-curve method, we show what happens when it is used to examine the FeIII and NII lines of P Cygni. An extremely surprising result is obtained; more highly-excited pure-emission lines without blueshifted absorption appear to be optically thicker than less-excited lines with blueshifted absorption. Such an effect is understandable if there are inhomogeneities in the wind.

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