alton98

Deep Submillimeter Images of NGC 891-Cold Dust at Larger Galactic Radii
P. B. Alton, S. Bianchi, R. J. Rand, E. M. Xilouris, J. I. Davies, M. Trewhella;
ApJ, 1998, 507, L125

ABSTRACT:We present images in the 450 and 850 μm continuum of the edge-on galaxy NGC 891.These measurements, carried out with the recently commissioned Submillimeter Common-User Bolometer Array, provide the deepest images yet of a nearby galaxy in the submillimeter wave band. We detect dust emission from 2/3 of the optical disk and confirm the presence of dust chimneys escaping from the main absorption layer up to z-heights of nearly 2 kpc. A comparison between the submillimeter surface brightness along the major axis with that corresponding to the IRAS 60 and 100 μm filters implies that large amounts of cold dust (~15 K) are present in the disk (in fact, an order of magnitude more grain material than the warm dust detected by IRAS). These cold grains predominate at larger galactic radii.
KEYWORDS: ism: dust, extinction, galaxies: individual: ngc number: ngc 891, galaxies: ism, galaxies: spiral, infrared: galaxies
CODE: alton98

Deep Submillimeter Images of NGC 891-Cold Dust at Larger Galactic Radii P. B. Alton, S. Bianchi, R. J. Rand, E. M. Xilouris, J. I. Davies, M. Trewhella; ApJ, 1998, 507, L125

Deep Submillimeter Images of NGC 891-Cold Dust at Larger Galactic Radii
P. B. Alton, S. Bianchi, R. J. Rand, E. M. Xilouris, J. I. Davies, M. Trewhella;
ApJ, 1998, 507, L125