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PIG (partially ionized globule) anatomy - Density and temperature structure of the bright-rimmed globule IC 1396EThe 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.
Document ID
19930041423
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Serabyn, E.
(California Inst. of Technology Pasadena, United States)
Guesten, R.
(Max-Planck-Inst. fuer Radioastronomie, Bonn, Germany; California Inst. of Technology Pasadena, United States)
Mundy, L.
(Maryland Univ. College Park, United States)
Date Acquired
August 16, 2013
Publication Date
February 10, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 404
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A25420
Funding Number(s)
CONTRACT_GRANT: NGL-05-002-140
CONTRACT_GRANT: NATO-0809/87
CONTRACT_GRANT: NAGW-1710
CONTRACT_GRANT: NSF AST-84-08225
CONTRACT_GRANT: NSF AST-87-19465
CONTRACT_GRANT: NSF AST-90-15132
Distribution Limits
Public
Copyright
Other

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