The following document lists the file abstract/BSMITH_PROP_001.abs
from catalogue VI/111.
A plain copy of the file
(without headers/trailers) may be downloaded.
We propose to use the ISOCAM instrument to obtain mid-infrared
spectral imaging data for the bulges of 4 early-type spiral galaxies
with LINER nuclei. These data will be complementary to our high spatial
resolution 50 and 100 micron observations of these bulges, obtained
with the Kuiper Airborne Observatory. Our KAO observations show that
these bulges are quite luminous in the far-infrared, and the
far-infrared emitting regions are quite extended (FWHM = 1 kpc = 30").
Our goals in the proposed mid-infrared studies are:
1) to determine the mid-infrared continuum distribution across
these bulges (is it similar to that in the far-infrared? Can we
identify morphological features, such as bars and circumnuclear rings,
which are unresolved in the far-infrared?).
2) to determine the infrared spectral energy distribution as a function
of position in these bulges (are there strong mid-infrared color
temperature gradients across the bulges? are emission lines present?
Are silicate absorption lines seen?).
3) to determine the distribution of very small dust grains in
these bulges, via the `unidentified' mid-infrared emission lines
(are the emission features non-existent near the LINER nucleus,
and bright elsewhere in the bulge? or the reverse? is the distribution
of small grains similar to that of the far-infrared continuum?).
4) to compare the mid-infrared properties of these relatively quiescent
bulges to those containing starbursts and Seyfert nuclei.