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BF Orionis - Evidence for an infalling circumstellar envelopeAnalysis 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.
Document ID
19920053208
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Welty, Alan D.
(Pennsylvania State University University Park, United States)
Barden, Samuel C.
(Kitt Peak National Observatory Tucson, AZ, United States)
Huenemoerder, David P.
(JPL, Pasadena, CA; NASA, Washington DC, United States)
Ramsey, Lawrence W.
(Pennsylvania State University University Park, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Astronomical Journal
Volume: 103
Issue: 5 Ma
ISSN: 0004-6256
Subject Category
Astrophysics
Accession Number
92A35832
Funding Number(s)
CONTRACT_GRANT: NSF AST-89-19205
Distribution Limits
Public
Copyright
Other

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