BF orionis: Evidence for an infalling circumstellar envelope

Alan D. Welty, Samuel C. Barden, David P. Huenemoerder, Lawrence W. Ramsey

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


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. We investigate the possibility that BF Ori may have a late type companion, and conclude that it does not.

Original languageEnglish (US)
Pages (from-to)1673-1678
Number of pages6
JournalAstronomical Journal
Issue number5
StatePublished - May 1992

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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