Far-Infrared Characteristics of Giant Molecular Clouds

Details Far-Infrared Characteristics of Giant Molecular Clouds Far-Infrared Characteristics of Giant Molecular Clouds

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pkas...21...27j&link_type=abstract

Publications of the Korean Astronomical Society (ISSN 1225-1534), Vol. 21, No. 2, p. 27 - 33 (2006)

Astronomy and Astrophysics

Astronomy

Dust, Far-Infrared Radiation, Fir Color, Giant Molecular Clouds

Scientific paper

Infrared color-color diagrams of 10 giant molecular clouds are examind to explore the dust property from the COBE Diffuse Infrared Background Experiment of the 100, 140, and 240 μm emission. Four of them, Taurus, Mon OB1, Gem OB1, and Chameleon, show anti-correlation in R100/140 - R140/240 plot and the horizontal distribution in R100/240 - R140/240 plot, which disagree with those of theoretical calculation. These could be explained by the depletion of 100 μm and the excess of 140 μm emission, though no existing dust model could support them. Mean color temperature of the anti-correlation region appears to be lower than that of the linear region, whose temperatures are 15.3, 17.0 K, respectively. And the linear region shows large dispersion in the plot of intensity relation. Both imply that a star formation would be more active, but not homogeneous, in the linear region compared to the anti-correlation region.

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