Vibrationally excited cyanoacetylene in regions of massive star formation

Details Vibrationally excited cyanoacetylene in regions of massive star formation Vibrationally excited cyanoacetylene in regions of massive star formation

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.260..191m&link_type=abstract

In ESA Proceedings of an ESA Workshop on a Spaceborne Submillimeter Astronomy Mission. A Cornerstone of the ESA Long Term Scienc

Astronomy and Astrophysics

Astronomy

3

Cyano Compounds, Infrared Spectra, Interstellar Chemistry, Molecular Clouds, Stellar Evolution, Vibrational Spectra, Orion Nebula, Stellar Envelopes, Stellar Temperature, Water Masers

Scientific paper

Observations of the J=2-11 and J=10-9 transitions of cyanoacetylene in the ground and the V7=1 vibrationally excited state towards Orion/IRc2, W51A, and Sgr B2 are presented. In W51A, 2 sources of vibrationally excited emission at the positions of the H2O masers, IRS2 and W51e are detected. The vibrationally excited emission in Orion peaks within 2" of IRC2. Excitation temperatures greater than 150 K, in agreement with determinations of kinetic temperatures are obtained. The vibrationally excited emission in Orion and Sgr B2 are 12"x = or less than 10" and 14x = or less than 10" respectively. The excitation temperatures and sizes can be explained by radiative pumping.

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