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Issue A&A
Volume 402, Number 1, April IV 2003
Page(s) 1 - 3
Section Cosmology
DOI http://dx.doi.org/10.1051/0004-6361:20030229



A&A 402, 1-3 (2003)
DOI: 10.1051/0004-6361:20030229

Transfer of radiation through cyclopropenylidene and ethylene oxide

S. Chandra

School of Physical Sciences, SRTM University, Nanded 431 606, India
(Received 29 June 1999 / Accepted 17 October 2002 )

Abstract
Cyclopropenylidene and ethylene oxide molecules are of astronomical importance as their observed lines, distributed throughout the observable microwave region, have a number of pairs having nearly equal frequencies, but different excitation energies and/or belonging to two different species of the molecule. Hence, these molecules may play important role in detecting physical conditions in cosmic objects. Therefore, in order to calculate intensities of the lines, we have investigated transfer of radiation through a cosmic object containing the molecule at a kinetic temperature of 10 K. Our results show that some lines of the molecule may be found in absorption against the cosmic 2.7 K background.


Key words: ISM: molecules -- molecular data -- radiative transfer


Tables at the CDS



© ESO 2003


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