Evidence for mass loss at polar latitudes in the Be stars Omega Orionis and 66 Ophiuchi

Details Evidence for mass loss at polar latitudes in the Be stars Omega Orionis and 66 Ophiuchi Evidence for mass loss at polar latitudes in the Be stars Omega Orionis and 66 Ophiuchi

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253l..33p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 253, Feb. 1, 1982, p. L33-L37.

Other

22

B Stars, Polar Regions, Stellar Mass Ejection, Stellar Spectra, Iue, Orion Constellation, Radial Velocity, Resonance Lines, Stellar Envelopes

Scientific paper

IUE observations of the pole-on Be stars Omega Ori and 66 Oph have revealed the unexpected presence of high velocity (-250 to -850 km/sec), relatively narrow (about 1 A) absorption components to the resonance lines of C IV, Si IV, and Si III. The C IV features show structure indicative of multiple shells or clouds. If Omega Ori and 66 Oph are indeed viewed pole-on, then these observations suggest that substantial matter is being ejected from the polar regions of these stars. The nature of these unusual high velocity features, which were not observed in other pole-on Be stars considered in the program, and the column densities and mass loss rates implied by them are discussed in this Letter.

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