Computer Science
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eimw.confe..52p&link_type=abstract
"The Evolving ISM in the Milky Way and Nearby Galaxies, The Fourth Spitzer Science Center Conference, Proceedings of the confere
Computer Science
Galaxies: Ism, Infrared: Ism, Ism: Dust, Extinction, Ism: Structure
Scientific paper
In the first part, we present some results of our ongoing modelling of the polarized thermal dust emission from cloud cores. In our radiative transfer calculations we record the direction-dependence of the incoming radiation, thus allowing us to calculate the anisotropy of the radiation, which should play a major part in the efficiency of the radiative torques. Radiative torque mechanism is widely considered to be a quite promising explanation for the grain alignment in clouds. In addition to the anisotropy, we show the derived polarization map and compare our results with previous studies. In the second part, we discuss the use of near-infrared diffuse surface brightness maps, arising from scattered light, as a tracer of dust column density in clouds with AV in the range 1, 15^m. We present our SOFI NTT -observations of a quiescent filament in the Corona Australis molecular cloud, and compare the derived dust column densities to the result derived from the extinction of the background stars.
Juvela Mika
Mattila Kalevi
Padoan Paolo
Pelkonen Veli-Matti
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