The cutoff in surface brightness
was adjusted to 1.4 MJy/sr which caused the program to limit the source
growth to the visually determined size.
The MIR emission in Fig. 5 (upper plot)
is dominated by the presence of numerous discrete sources while
nearly no diffuse emission is detected. The discrete
sources are mainly located in two different regions: most of them
cluster in a ring-like structure in the SW part of the SMC, and some
of them are located in the NE part of the SMC bar. Most
detections are found in the central IRAS field 0 (upper plot in
Fig. 5).
To summarize, at 12 m the SMC appears as a patchy pattern of
single discrete sources which are not a tracer of the
morphology of this galaxy.
As given in Table 4,
25 of our 73 sources listed in Appendix A were identified as
IRAS PSC or FSC sources using the SIMBAD database within a correlation radius of 60'', 14 were classified
as HII regions already in former studies. Finally, 38 sources
fit into the category "emission line
star/emission object''. The SIMBAD results for the identification of
carbon stars are omitted in Appendix A and in Table 4, since nearly all of our sources
(65) were associated to such a star within the correlation radius. 18
sources could be classified as type "C'' (cold) according to the
classification criteria for the 170 m catalog given above. 14 of the sources show a
170
m/100
m flux ratio greater than 1.0. Of the sources
which were not found in the 170
m ISO map but could be classified
using the 60
m and 100
m data, 2 have flux ratios
,
other two ones yield
.
Copyright ESO 2003