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First results from the Faint Object Camera - Imaging the core of R AquariiThe Faint Object Camera on the HST was pointed toward the symbiotic long-period M7e Mira variable R Aquarii, and very high resolution images of the inner core, mainly in the ionized oxygen emission lines in the optical, are reported. Both images show bright arcs, knots, and filaments superposed on a fainter, diffuse nebulosity extending in a general SW-NE direction from the variable to the edge of the field at 10 arcsec distance. The core is resolved in forbidden O III 5007 A and forbidden O II 3727 A into at least two bright knots of emission whose positions and structures are aligned with PA = 50 deg. The central knots appear to be the source of a continuous, well-collimated, stream of material extending out to 3-4 arcsec in the northern sector corresponding to a linear distance of about 1000 AU. The northern stream seems to bend around an opaque obstacle and form a spiral before breaking up into wisps and knots. The southern stream is composed of smaller, discrete parcels of emitting gas curving to the SE.
Document ID
19910041868
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Paresce, F.
(Space Telescope Science Institute, Baltimore, MD; ESA, Astrophysics Div. Noordwijk, Netherlands)
Albrecht, R.
(ESA, Astrophysics Div., Noordwijk, Netherlands; Space Telescope European Coordinating Facility, Garching Federal Republic of Germany, United States)
Barbieri, C.
(Padova Osservatorio Astronomico, Padua, Italy)
Blades, J. C.
(Space Telescope Science Institute Baltimore, MD, United States)
Boksenberg, A.
(Royal Greenwich Observatory Cambridge, United Kingdom)
Date Acquired
August 14, 2013
Publication Date
March 10, 1991
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 369
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A26491
Funding Number(s)
CONTRACT_GRANT: NAS5-27760
CONTRACT_GRANT: NAS5-28086
CONTRACT_GRANT: ESA-6500/85/NL/SK
Distribution Limits
Public
Copyright
Other

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