BF Orionis - Evidence for an infalling circumstellar envelope

Details BF Orionis - Evidence for an infalling circumstellar envelope BF Orionis - Evidence for an infalling circumstellar envelope

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....103.1673w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 103, no. 5, May 1992, p. 1673-1678.

Astronomy and Astrophysics

Astronomy

21

A Stars, B Stars, Balmer Series, Stellar Envelopes, Stellar Spectra, Companion Stars, Emission Spectra, Spectral Energy Distribution, Stellar Magnitude

Scientific paper

Analysis of the optical magnitudes and Balmer lines of the Herbig Ae/Be star BF Orionis confirm that the object is an early to mid A-type star, but appears to be below the zero-age main sequence. Enhanced metal-line strengths (once thought to link BF Ori with the Am stars), line asymmetries, and radial velocities are shown to be signatures of an infalling circumstellar envelope. The possibility that BF Ori has a late-type companion is examined, and it is concluded that it does not.

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