Interstellar cyanoacetylene - J = 2-1, J = 4-3 transitions

Details Interstellar cyanoacetylene - J = 2-1, J = 4-3 transitions Interstellar cyanoacetylene - J = 2-1, J = 4-3 transitions

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.180..585m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 180, Sept. 1977, p. 585-592.

Astronomy and Astrophysics

Astronomy

9

Acetylene, Cyano Compounds, Interstellar Chemistry, Molecular Rotation, Cyanoacetylene, Electron Transitions, Interstellar Matter, Microwave Spectra, Mira Variables, Variable Stars

Scientific paper

Detection of the 36.4-GHz J - 4-3 rotational transition of interstellar cyanoacetylene (HC3N) is reported. The line was seen in emission from Sagittarius B2 and from the Mira variable, W Hydrae. The 18.2-GHz J - 2-1 line from Sgr B2 was reobserved to remove some confusion about the intensity of this line. The profiles of the lower-order lines in Sgr B2 are compared. The intensities of the transitions up to J = 14-13 suggest a kinetic temperature of about 12K for the region of origin of the Sgr B2 interstellar molecular lines.

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