N. Thatte et al., THE NUCLEAR STELLAR CORE, THE HOT DUST SOURCE, AND THE LOCATION OF THE NUCLEUS OF NGC-1068, The Astrophysical journal, 490(1), 1997, pp. 238
We present new near-infrared speckle and adaptive optics imaging and i
ntegral field spectroscopy of the nuclear region of NGC 1068. Ninety-f
our percent of the K-band light in the central 1'' originates from a l
ess than or equal to 30 milliarcsecond diameter source whose position
we determine to coincide within +/- 0''.15 with the apex of the cone s
tructure seen in the optical narrow emission lines, as well as the loc
ation of the flat spectrum radio component S1 and the 12 mu m emission
peak. We interpret the compact source as hot dust near the sublimatio
n temperature within similar to 1 pc of the true nucleus of the galaxy
. The remaining 6% of the light in the central 1'' comes from a modera
tely extincted stellar core centered on the nuclear position and of in
trinsic size similar to 50 pc. We show that this nuclear stellar core
is probably 5-16 x 10(8) yr in age and contributes at least 7% of the
total nuclear luminosity of similar to 1 x 10(11) L..