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Detection of accreting gas toward HD 45677 - A newly recognized, Herbig Be proto-planetary systemWe report the detection of high-velocity, accreting gas toward the BE(e) 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 to 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, protoplanetary disk.
Document ID
19930072498
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Grady, C. A.
(Applied Research Corp. Landover, MD, United States)
Bjorkman, K. S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shepherd, D.
(Wisconsin Univ. Madison, United States)
Schulte-Ladbeck, R. E.
(Pittsburgh Univ. PA, United States)
Perez, M. R.
(IUE Observatory; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
De Winter, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
The, P. S.
(Amsterdam Univ. Netherlands)
Date Acquired
August 16, 2013
Publication Date
September 20, 1993
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 415
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A56495
Funding Number(s)
CONTRACT_GRANT: NAS5-32059
CONTRACT_GRANT: NASW-4756
CONTRACT_GRANT: NAG5-1740
CONTRACT_GRANT: NAG5-1783
Distribution Limits
Public
Copyright
Other

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