• Dust color temperature distribution of two FIR cavities at IRIS and AKARI maps

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    • Abstract


      By systematically searching the region of far infrared loops, we found a number of huge cavity-like dust structures at 60 $\mu$m and 100 $\mu$m IRIS maps.By checking these with AKARI maps (90 $\mu$m and 140 $\mu$m), twonew cavity-like structures (sizes $\sim 2.7 {\rm pc}\times 0.8$ pc and $\sim 1.8 {\rm pc} \times 1$ pc) located at R.A. $({\rm J2000}) = 14^{\rm h}41^{\rm m}23^{\rm s}$ and Dec. $ ({\rm J2000}) = −64^{\circ}04'17''$ and R.A. $({\rm J2000}) = 05^h05^m35^s$ and Dec. $({\rm J2000}) = −69^{\circ}35'25''$ wereselected for the study. The difference in the average dust color temperatures calculated using IRIS and AKARI maps of the cavity candidates were found to be $3.2 \pm 0.9$ K and $4.1 \pm 1.2$ K, respectively. Interestingly, the longer wavelength AKARI map gives larger values of dust color temperature than that of the shorter wavelength IRIS maps. Possible explanation of the results will be presented.

    • Author Affiliations


      A. K. JHA1 B. ARYAL1

      1. Central Department of Physics, Tribhuvan University, Kirtipur, Nepal.
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