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Astro Seminar: Gururaj Wagle

Date:
-
Location:
179 Chem-Phys Bldg

Modeling the Cirrus Clouds



Abstract:



The cirrus clouds are mainly diffuse or translucent clouds, with typically

a very low visual extinction. But such clouds may have dense molecular cores.

These cores could be precursors to star formation and are very good candidates

to study early phases of stellar evolution. Despite of the apparent simplicity of

these regions, the observations of the dense gas tracers contradict with the

models and hence suggesting a gap in our understanding of these regions.

Polaris Flare is a high latitude cirrus cloud, with several star-less cores. A

translucent molecular cloud MCLD 123.5+24.9 is one of the denser regions of

the Polaris cirrus complex, located in the direction near the celestial North Pole.

I am going to discuss the models of this region using Cloudy with the help of

CO transition line observations and recent Herschel observations from the

continuum dust emission.