Thermal infrared

Thermal infrared - Thermal infrared. Two ranges have been...

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Thermal infrared. Two ranges have been studied - the 10μ window (offering excellent spatial resolution and modest sensitivity, probing high dust temperatures) and the far-infrared bands pioneered with IRAS (excellent sensitivity but poor resolution, over a much wider temperature range). Both are sensitive to a wider range of stellar masses than are H recombination lines. At 10μ, Cutri and McAlary (1985 ApJ 296, 90) found that galaxies from the Karachentsev (1972, 1988) catalog of paired galaxies have systematically higher luminosities (and detection probabilities) than isolated systems, which they interpreted as reflecting dust heated by increased numbers of young stars. Similarly, Lonsdale, Persson, and Matthews (1984 ApJ 287, 1009) found enhanced 10-20μ emission in galaxies selected for tidal distortions from the Arp Atlas. There has been an enormous amount of work on the connection between IRAS emission and interactions (Soifer et al. 1984 ApJL 278, L71, Lonsdale, Persson, and Matthews 1984; Telesco, Wolstencroft, and Done 1988 ApJ 329, 174; Lawrence et al. 1989 MNRAS 240, 329), but the
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This note was uploaded on 11/10/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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Thermal infrared - Thermal infrared. Two ranges have been...

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