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HST imaging of the inner 3 arcseconds of NGC 1068 in the light of forbidden O III 5007 AThe Planetary Camera aboard HST has been used to obtain a high spatial resolution forbidden O III 5007 A image of the nucleus of the barred spiral galaxy NGC 1068. This image shows more detail than any previously published images and resolves the NLR into several distinct clouds arranged in an apparently conical geometry. The individual emission-line regions appear to be resolved with sizes of 0.1-0.2 arcsec. There is a strong apparent correspondence between the 1.3 cm radio structure and several of the forbidden O III 5007 A clouds, although there are also bright emission-line clouds for which there are no radio counterparts. In particular, the radio 'triple' of Ulvestad et al. (1987) appears to correspond directly to the forbidden O III 5007 A clouds A-D. It is concluded that the distribution of the clouds is consistent with ionization core models. The hidden nucleus is located somewhere in the southern radio component and may be coincident with the H2O megamaser.
Document ID
19910041859
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Evans, I. N.
(Space Telescope Science Inst. Baltimore, MD, United States)
Kinney, A. L.
(Space Telescope Science Institute Baltimore, MD, United States)
Ford, H. C.
(Johns Hopkins University; Space Telescope Science Institute, Baltimore, MD, United States)
Antonucci, R. R. J.
(California, University Santa Barbara, United States)
Armus, L.
(Johns Hopkins University Baltimore, MD, United States)
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
Astronomy
Accession Number
91A26482
Funding Number(s)
CONTRACT_GRANT: NAS5-29293
Distribution Limits
Public
Copyright
Other

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