Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...404..247s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 404, no. 1, p. 247-257.
Astronomy and Astrophysics
Astrophysics
33
Globules, H Ii Regions, Interstellar Matter, Molecular Clouds, Star Formation, Temperature Distribution, Ammonia, Astronomical Models, Brightness Temperature, Carbon, Emission Spectra, Gas Density, Sulfides
Scientific paper
The density and temperature structure of the bright-rimmed cometary globule IC 1396E is estimated, and the possibility that recent internal star formation was triggered by the ionization front in its southern surface is assessed. On the basis of NH3 data, gas temperatures in the globule are found to increase outward from the center, from a minimum of 17 K in its tail to a maximum of 26 K on the surface most directly facing the stars ionizing IC 1396. On the basis of a microturbulent radiative transfer code to model the radial dependence of the CS line intensities, and also the intensities of the optically thin 2-1 and 5-4 lines toward the cloud center, a radial density dependence of r exp -1.55 to r exp -1.75 is found.
Guesten Rolf
Mundy Lee
Serabyn Eugen
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