Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...507l.125a&link_type=abstract
The Astrophysical Journal, Volume 507, Issue 2, pp. L125-L129.
Astronomy and Astrophysics
Astronomy
92
Ism: Dust, Extinction, Galaxies: Individual: Ngc Number: Ngc 891, Galaxies: Ism, Galaxies: Spiral, Infrared: Galaxies
Scientific paper
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.
Alton Paul B.
Bianchi Simone
Davies Jonathan I.
Rand Richard J.
Trewhella Matthew
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