Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.7507m&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #75.07; Bulletin of the American Astronomical Society, Vol. 29, p.1328
Astronomy and Astrophysics
Astronomy
2
Scientific paper
Galaxy M31 was observed by the SPIRIT III infrared radiometer on the MSX satellite in the summer of 1996 (astronomy on MSX has been described by Price et al., V 1996, IAU Symposium No. 179, Baltimore). M31 images of size 1deg x 3deg with ~ 9('') pixels have been produced in bands A (6.8microns - 10.8microns ), C (11.1microns - 13.2 microns ), D (13.5 microns - 15.9 microns ) and E (18 microns - 25 microns ) of MSX. Band A which overlaps major PAH emission features at 7.7mu m and 8.6mu m appears stronger than band C which overlaps the PAH feature at 11.3mu m. Band D which does not overlap any PAH features and represents the broad continuum appears weak. IRAS 12mu m band spans a spectral range of 8microns - 15microns , which overlaps most of bands A, C and D. The HiRes images of M31 from IRAS at 12mu m are compared with bands A and coadded results from bands C & D. In light of the relative strengths of bands A and C, the strength of IRAS 12mu m band can be related to the PAH features at 7.7mu m and 8.6mu m. The band A data were directly imaged without enhancement. The features in this image show superior resolution compared to MCM and MEM resolution enahncement methods. The data are also more sensitive.
Marsh Ken
Moshir Mehdrdad
Price Steve
Tedesco Edward
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