Far infrared emission from galaxies |
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Authors: | K V K Iyengar R P Verma |
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Institution: | (1) Tata Institute of Fundamental Research, Bombay, India |
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Abstract: | Until recently far infrared (FIR) observations of galaxies were limited to about a dozen bright and/or active galaxies. New photometric data has become available from Infrared Astronomical Satellite (IRAS) on 33 galaxies (most of them faint) from IRAS Circular Nos. 1, 2, and 3 The FIR spectra of these galaxies are similar. The far infrared fluxF
FIR in the wavelength interval 9–118 m of the brighter galaxies is seen to be correlated with the integrated optical magnitudeB
T
0
. The 12 and 25 m fluxes of these galaxies exhibit the same dependence onB
T
0
as the 10 and 21 m fluxes from Seyferts and other emission-line galaxies. This suggests that the galaxies detected by IRAS are some type of active galaxies in accord with the high percentage of these galaxies predicted by Lock and Rowan-Robinson (1983). |
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