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Detection of accreting gas toward HD 45677: A newly recognized, Herbig Be proto-planetary systemWe 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.
Document ID
19940014815
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Grady, C. A.
(Applied Research Corp. Landover, MD, United States)
Bjorkman, K. S.
(Wisconsin Univ. Madison., United States)
Shepherd, D.
(Wisconsin Univ. Madison., United States)
Schulte-Ladbeck, R. E.
(Pittsburgh Univ. PA., United States)
Perez, M. R.
(Computer Sciences Corp. Greenbelt, MD., United States)
Dewinter, D.
(Astronomical Inst. Amsterdam, Netherlands)
The, P. S.
(Astronomical Inst. Amsterdam, Netherlands)
Date Acquired
September 6, 2013
Publication Date
July 6, 1993
Subject Category
Astronomy
Report/Patent Number
NASA-CR-189312
NAS 1.26:189312
Report Number: NASA-CR-189312
Report Number: NAS 1.26:189312
Accession Number
94N19288
Funding Number(s)
CONTRACT_GRANT: NASW-4756
CONTRACT_GRANT: NAS5-32059
CONTRACT_GRANT: NAG5-1783
CONTRACT_GRANT: NAG5-1740
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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