Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993stin...9419288g&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Absorption Spectra, B Stars, Line Spectra, Massive Stars, Stellar Envelopes, Stellar Mass Accretion, Ultraviolet Absorption, Emission Spectra, Stellar Evolution, Stellar Structure, Ultraviolet Astronomy
Scientific paper
We report detection of high velocity, accreting gas toward the Be star with IR excess and bipolar nebula, HD 45677. High velocity (+200 to +400 km/s), variable column density gas is visible in all IUE spectra from 1979-1992 in transitions of Si II, C II, Al III, Fe III, Si IV, and C IV. Low-velocity absorption profiles from low oscillator-strength transitions of Si II, Fe II, and Zn II exhibit double-peaked absorption profiles similar to those previously reported in optical spectra of FU Orionis objects. The UV absorption data, together with previously reported analyses of the IR excess and polarization of this object, suggest that HD 45677 is a massive, Herbig Be star with an actively accreting circumstellar, proto-planetary disk.
Bjorkman Karen S.
de Winter Dolf
Grady Carol A.
Perez Mario R.
Schulte-Ladbeck Regina E.
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