Statistics – Computation
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..941d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 15, 1988, p. 941-946. CNR-supported research.
Statistics
Computation
8
Cosmic Dust, Far Infrared Radiation, Infrared Sources (Astronomy), Interstellar Matter, Computational Astrophysics, Diffuse Radiation, Infrared Astronomy Satellite
Scientific paper
The IRAS diffuse emission data at 60 and 100 microns and the Lick Observatory galaxy counts are used here to study the large-scale distribution of interstellar dust at high Galactic latitudes, the isotropic component of diffuse emission, and the spectral behavior of the absorption coefficient in the far-IR. The results confirm the existence of the cosecant b law of Galactic far-IR emission. The isotropic component of diffuse emission is found to be comparable to the instrumental offset uncertainty at 100 microns. Therefore, the cosecant b law can provide an alternative 'local' explanation for the 'extragalactic' background claimed by Rowan-Robinson (1986). Assuming the IR absorption efficiency spectral index lying in the range one to two, a dust temperature in the range 22-25 K is found, in agreement with previous estimates.
Aiello Santi
de Bernardis Paolo
Masi Silvia
Melchiorri Francesco
Moreno Giovani
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