On the MG 2 and Fe 2 resonance lines in Herbig AE stars: Preliminary results

Details On the MG 2 and Fe 2 resonance lines in Herbig AE stars: Preliminary results On the MG 2 and Fe 2 resonance lines in Herbig AE stars: Preliminary results

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.176...99t&link_type=abstract

In ESA 3rd European IUE Conf. p 99-105 (SEE N83-11889 02-88)

Other

10

Iron, Line Spectra, Magnesium, Resonance Lines, Stellar Radiation, Escape Velocity, Fine Structure, Interstellar Extinction, Iue, Photosphere, Stellar Mass, Stellar Winds

Scientific paper

The IUE observed AB Aur, HD250550, and BD + 46 deg 3471 at high resolution in the range 2000 to 32000 A. The MgII resonance line profiles all show a P Cygni structure, with an intense emission, and a shortward wing velocity in the absorption component of 300 to 600 km/sec. In HD 250550, the Fe II line spectrum exhibits a shell phenomenon: all lines are blue displaced by - 290 km/sec; other lines of singly ionized species show the same effect. The mass loss rate in AB Aur estimated from an analysis of both MgII resonance lines and unsaturated Fe II multiplet 1 lines is smaller than previously reported.

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